diff --git a/android/src/main/java/com/swmansion/enriched/EnrichedTextInputView.kt b/android/src/main/java/com/swmansion/enriched/EnrichedTextInputView.kt
index 086b5d8e9..ccecd7f43 100644
--- a/android/src/main/java/com/swmansion/enriched/EnrichedTextInputView.kt
+++ b/android/src/main/java/com/swmansion/enriched/EnrichedTextInputView.kt
@@ -409,6 +409,9 @@ class EnrichedTextInputView : AppCompatEditText {
       EnrichedSpans.H1 -> paragraphStyles?.toggleStyle(EnrichedSpans.H1)
       EnrichedSpans.H2 -> paragraphStyles?.toggleStyle(EnrichedSpans.H2)
       EnrichedSpans.H3 -> paragraphStyles?.toggleStyle(EnrichedSpans.H3)
+      EnrichedSpans.H4 -> paragraphStyles?.toggleStyle(EnrichedSpans.H4)
+      EnrichedSpans.H5 -> paragraphStyles?.toggleStyle(EnrichedSpans.H5)
+      EnrichedSpans.H6 -> paragraphStyles?.toggleStyle(EnrichedSpans.H6)
       EnrichedSpans.CODE_BLOCK -> paragraphStyles?.toggleStyle(EnrichedSpans.CODE_BLOCK)
       EnrichedSpans.BLOCK_QUOTE -> paragraphStyles?.toggleStyle(EnrichedSpans.BLOCK_QUOTE)
       EnrichedSpans.ORDERED_LIST -> listStyles?.toggleStyle(EnrichedSpans.ORDERED_LIST)
@@ -429,6 +432,9 @@ class EnrichedTextInputView : AppCompatEditText {
       EnrichedSpans.H1 -> paragraphStyles?.removeStyle(EnrichedSpans.H1, start, end)
       EnrichedSpans.H2 -> paragraphStyles?.removeStyle(EnrichedSpans.H2, start, end)
       EnrichedSpans.H3 -> paragraphStyles?.removeStyle(EnrichedSpans.H3, start, end)
+      EnrichedSpans.H4 -> paragraphStyles?.removeStyle(EnrichedSpans.H4, start, end)
+      EnrichedSpans.H5 -> paragraphStyles?.removeStyle(EnrichedSpans.H5, start, end)
+      EnrichedSpans.H6 -> paragraphStyles?.removeStyle(EnrichedSpans.H6, start, end)
       EnrichedSpans.CODE_BLOCK -> paragraphStyles?.removeStyle(EnrichedSpans.CODE_BLOCK, start, end)
       EnrichedSpans.BLOCK_QUOTE -> paragraphStyles?.removeStyle(EnrichedSpans.BLOCK_QUOTE, start, end)
       EnrichedSpans.ORDERED_LIST -> listStyles?.removeStyle(EnrichedSpans.ORDERED_LIST, start, end)
@@ -452,6 +458,9 @@ class EnrichedTextInputView : AppCompatEditText {
       EnrichedSpans.H1 -> paragraphStyles?.getStyleRange()
       EnrichedSpans.H2 -> paragraphStyles?.getStyleRange()
       EnrichedSpans.H3 -> paragraphStyles?.getStyleRange()
+      EnrichedSpans.H4 -> paragraphStyles?.getStyleRange()
+      EnrichedSpans.H5 -> paragraphStyles?.getStyleRange()
+      EnrichedSpans.H6 -> paragraphStyles?.getStyleRange()
       EnrichedSpans.CODE_BLOCK -> paragraphStyles?.getStyleRange()
       EnrichedSpans.BLOCK_QUOTE -> paragraphStyles?.getStyleRange()
       EnrichedSpans.ORDERED_LIST -> listStyles?.getStyleRange()
diff --git a/android/src/main/java/com/swmansion/enriched/EnrichedTextInputViewManager.kt b/android/src/main/java/com/swmansion/enriched/EnrichedTextInputViewManager.kt
index 286a19b7b..91b004ce7 100644
--- a/android/src/main/java/com/swmansion/enriched/EnrichedTextInputViewManager.kt
+++ b/android/src/main/java/com/swmansion/enriched/EnrichedTextInputViewManager.kt
@@ -235,6 +235,18 @@ class EnrichedTextInputViewManager : SimpleViewManager<EnrichedTextInputView>(),
     view?.verifyAndToggleStyle(EnrichedSpans.H3)
   }
 
+  override fun toggleH4(view: EnrichedTextInputView?) {
+    view?.verifyAndToggleStyle(EnrichedSpans.H4)
+  }
+
+  override fun toggleH5(view: EnrichedTextInputView?) {
+    view?.verifyAndToggleStyle(EnrichedSpans.H5)
+  }
+
+  override fun toggleH6(view: EnrichedTextInputView?) {
+    view?.verifyAndToggleStyle(EnrichedSpans.H6)
+  }
+
   override fun toggleCodeBlock(view: EnrichedTextInputView?) {
     view?.verifyAndToggleStyle(EnrichedSpans.CODE_BLOCK)
   }
diff --git a/android/src/main/java/com/swmansion/enriched/spans/EnrichedH4Span.kt b/android/src/main/java/com/swmansion/enriched/spans/EnrichedH4Span.kt
new file mode 100644
index 000000000..76f649476
--- /dev/null
+++ b/android/src/main/java/com/swmansion/enriched/spans/EnrichedH4Span.kt
@@ -0,0 +1,17 @@
+package com.swmansion.enriched.spans
+
+import android.graphics.Typeface
+import android.text.TextPaint
+import android.text.style.AbsoluteSizeSpan
+import com.swmansion.enriched.spans.interfaces.EnrichedHeadingSpan
+import com.swmansion.enriched.styles.HtmlStyle
+
+class EnrichedH4Span(private val htmlStyle: HtmlStyle) : AbsoluteSizeSpan(htmlStyle.h4FontSize), EnrichedHeadingSpan {
+  override fun updateDrawState(tp: TextPaint) {
+    super.updateDrawState(tp)
+    val bold = htmlStyle.h4Bold
+    if (bold) {
+      tp.typeface = Typeface.create(tp.typeface, Typeface.BOLD)
+    }
+  }
+}
diff --git a/android/src/main/java/com/swmansion/enriched/spans/EnrichedH5Span.kt b/android/src/main/java/com/swmansion/enriched/spans/EnrichedH5Span.kt
new file mode 100644
index 000000000..437bddf14
--- /dev/null
+++ b/android/src/main/java/com/swmansion/enriched/spans/EnrichedH5Span.kt
@@ -0,0 +1,17 @@
+package com.swmansion.enriched.spans
+
+import android.graphics.Typeface
+import android.text.TextPaint
+import android.text.style.AbsoluteSizeSpan
+import com.swmansion.enriched.spans.interfaces.EnrichedHeadingSpan
+import com.swmansion.enriched.styles.HtmlStyle
+
+class EnrichedH5Span(private val htmlStyle: HtmlStyle) : AbsoluteSizeSpan(htmlStyle.h5FontSize), EnrichedHeadingSpan {
+  override fun updateDrawState(tp: TextPaint) {
+    super.updateDrawState(tp)
+    val bold = htmlStyle.h5Bold
+    if (bold) {
+      tp.typeface = Typeface.create(tp.typeface, Typeface.BOLD)
+    }
+  }
+}
diff --git a/android/src/main/java/com/swmansion/enriched/spans/EnrichedH6Span.kt b/android/src/main/java/com/swmansion/enriched/spans/EnrichedH6Span.kt
new file mode 100644
index 000000000..22c89e7d0
--- /dev/null
+++ b/android/src/main/java/com/swmansion/enriched/spans/EnrichedH6Span.kt
@@ -0,0 +1,17 @@
+package com.swmansion.enriched.spans
+
+import android.graphics.Typeface
+import android.text.TextPaint
+import android.text.style.AbsoluteSizeSpan
+import com.swmansion.enriched.spans.interfaces.EnrichedHeadingSpan
+import com.swmansion.enriched.styles.HtmlStyle
+
+class EnrichedH6Span(private val htmlStyle: HtmlStyle) : AbsoluteSizeSpan(htmlStyle.h6FontSize), EnrichedHeadingSpan {
+  override fun updateDrawState(tp: TextPaint) {
+    super.updateDrawState(tp)
+    val bold = htmlStyle.h6Bold
+    if (bold) {
+      tp.typeface = Typeface.create(tp.typeface, Typeface.BOLD)
+    }
+  }
+}
diff --git a/android/src/main/java/com/swmansion/enriched/spans/EnrichedSpans.kt b/android/src/main/java/com/swmansion/enriched/spans/EnrichedSpans.kt
index ef1b408ee..6b7f71342 100644
--- a/android/src/main/java/com/swmansion/enriched/spans/EnrichedSpans.kt
+++ b/android/src/main/java/com/swmansion/enriched/spans/EnrichedSpans.kt
@@ -25,6 +25,9 @@ object EnrichedSpans {
   const val H1 = "h1"
   const val H2 = "h2"
   const val H3 = "h3"
+  const val H4 = "h4"
+  const val H5 = "h5"
+  const val H6 = "h6"
   const val BLOCK_QUOTE = "block_quote"
   const val CODE_BLOCK = "code_block"
 
@@ -49,6 +52,9 @@ object EnrichedSpans {
     H1 to ParagraphSpanConfig(EnrichedH1Span::class.java, false),
     H2 to ParagraphSpanConfig(EnrichedH2Span::class.java, false),
     H3 to ParagraphSpanConfig(EnrichedH3Span::class.java, false),
+    H4 to ParagraphSpanConfig(EnrichedH4Span::class.java, false),
+    H5 to ParagraphSpanConfig(EnrichedH5Span::class.java, false),
+    H6 to ParagraphSpanConfig(EnrichedH6Span::class.java, false),
     BLOCK_QUOTE to ParagraphSpanConfig(EnrichedBlockQuoteSpan::class.java, true),
     CODE_BLOCK to ParagraphSpanConfig(EnrichedCodeBlockSpan::class.java, true),
   )
@@ -71,6 +77,9 @@ object EnrichedSpans {
         if (htmlStyle.h1Bold) blockingStyles.add(H1)
         if (htmlStyle.h2Bold) blockingStyles.add(H2)
         if (htmlStyle.h3Bold) blockingStyles.add(H3)
+        if (htmlStyle.h4Bold) blockingStyles.add(H4)
+        if (htmlStyle.h5Bold) blockingStyles.add(H5)
+        if (htmlStyle.h6Bold) blockingStyles.add(H6)
         StylesMergingConfig(blockingStyles = blockingStyles.toTypedArray())
       }
       ITALIC -> StylesMergingConfig(
@@ -87,31 +96,46 @@ object EnrichedSpans {
         blockingStyles = arrayOf(CODE_BLOCK)
       )
       H1 -> {
-        val conflictingStyles = mutableListOf(H2, H3, ORDERED_LIST, UNORDERED_LIST, BLOCK_QUOTE, CODE_BLOCK)
+        val conflictingStyles = mutableListOf(H2, H3, H4, H5, H6, ORDERED_LIST, UNORDERED_LIST, BLOCK_QUOTE, CODE_BLOCK)
         if (htmlStyle.h1Bold) conflictingStyles.add(BOLD)
         StylesMergingConfig(conflictingStyles = conflictingStyles.toTypedArray())
       }
       H2 -> {
-        val conflictingStyles = mutableListOf(H1, H3, ORDERED_LIST, UNORDERED_LIST, BLOCK_QUOTE, CODE_BLOCK)
+        val conflictingStyles = mutableListOf(H1, H3, H4, H5, H6, ORDERED_LIST, UNORDERED_LIST, BLOCK_QUOTE, CODE_BLOCK)
         if (htmlStyle.h2Bold) conflictingStyles.add(BOLD)
         StylesMergingConfig(conflictingStyles = conflictingStyles.toTypedArray())
       }
       H3 -> {
-        val conflictingStyles = mutableListOf(H1, H2, ORDERED_LIST, UNORDERED_LIST, BLOCK_QUOTE, CODE_BLOCK)
+        val conflictingStyles = mutableListOf(H1, H2, H4, H5, H6, ORDERED_LIST, UNORDERED_LIST, BLOCK_QUOTE, CODE_BLOCK)
         if (htmlStyle.h3Bold) conflictingStyles.add(BOLD)
         StylesMergingConfig(conflictingStyles = conflictingStyles.toTypedArray())
       }
+      H4 -> {
+        val conflictingStyles = mutableListOf(H1, H2, H3, H5, H6, ORDERED_LIST, UNORDERED_LIST, BLOCK_QUOTE, CODE_BLOCK)
+        if (htmlStyle.h4Bold) conflictingStyles.add(BOLD)
+        StylesMergingConfig(conflictingStyles = conflictingStyles.toTypedArray())
+      }
+      H5 -> {
+        val conflictingStyles = mutableListOf(H1, H2, H3, H4, H6, ORDERED_LIST, UNORDERED_LIST, BLOCK_QUOTE, CODE_BLOCK)
+        if (htmlStyle.h5Bold) conflictingStyles.add(BOLD)
+        StylesMergingConfig(conflictingStyles = conflictingStyles.toTypedArray())
+      }
+      H6 -> {
+        val conflictingStyles = mutableListOf(H1, H2, H3, H4, H5, ORDERED_LIST, UNORDERED_LIST, BLOCK_QUOTE, CODE_BLOCK)
+        if (htmlStyle.h6Bold) conflictingStyles.add(BOLD)
+        StylesMergingConfig(conflictingStyles = conflictingStyles.toTypedArray())
+      }
       BLOCK_QUOTE -> StylesMergingConfig(
-        conflictingStyles = arrayOf(H1, H2, H3, CODE_BLOCK, ORDERED_LIST, UNORDERED_LIST)
+        conflictingStyles = arrayOf(H1, H2, H3, H4, H5, H6, CODE_BLOCK, ORDERED_LIST, UNORDERED_LIST)
       )
       CODE_BLOCK -> StylesMergingConfig(
-        conflictingStyles = arrayOf(H1, H2, H3, BOLD, ITALIC, UNDERLINE, STRIKETHROUGH, UNORDERED_LIST, ORDERED_LIST, BLOCK_QUOTE, INLINE_CODE)
+        conflictingStyles = arrayOf(H1, H2, H3, H4, H5, H6, BOLD, ITALIC, UNDERLINE, STRIKETHROUGH, UNORDERED_LIST, ORDERED_LIST, BLOCK_QUOTE, INLINE_CODE)
       )
       UNORDERED_LIST -> StylesMergingConfig(
-        conflictingStyles = arrayOf(H1, H2, H3, ORDERED_LIST, CODE_BLOCK, BLOCK_QUOTE)
+        conflictingStyles = arrayOf(H1, H2, H3, H4, H5, H6, ORDERED_LIST, CODE_BLOCK, BLOCK_QUOTE)
       )
       ORDERED_LIST -> StylesMergingConfig(
-        conflictingStyles = arrayOf(H1, H2, H3, UNORDERED_LIST, CODE_BLOCK, BLOCK_QUOTE),
+        conflictingStyles = arrayOf(H1, H2, H3, H4, H5, H6, UNORDERED_LIST, CODE_BLOCK, BLOCK_QUOTE),
       )
       LINK -> StylesMergingConfig(
         blockingStyles = arrayOf(INLINE_CODE, CODE_BLOCK, MENTION)
diff --git a/android/src/main/java/com/swmansion/enriched/styles/HtmlStyle.kt b/android/src/main/java/com/swmansion/enriched/styles/HtmlStyle.kt
index 8a4b9088f..de258b3f8 100644
--- a/android/src/main/java/com/swmansion/enriched/styles/HtmlStyle.kt
+++ b/android/src/main/java/com/swmansion/enriched/styles/HtmlStyle.kt
@@ -28,6 +28,15 @@ class HtmlStyle {
   var h3FontSize: Int = 56
   var h3Bold: Boolean = false
 
+  var h4FontSize: Int = 48
+  var h4Bold: Boolean = false
+
+  var h5FontSize: Int = 40
+  var h5Bold: Boolean = false
+
+  var h6FontSize: Int = 32
+  var h6Bold: Boolean = false
+
   var blockquoteColor: Int? = null
   var blockquoteBorderColor: Int = Color.BLACK
   var blockquoteStripeWidth: Int = 2
@@ -80,6 +89,18 @@ class HtmlStyle {
     h3FontSize = parseFloat(h3Style, "fontSize").toInt()
     h3Bold = h3Style?.getBoolean("bold") == true
 
+    val h4Style = style.getMap("h4")
+    h4FontSize = parseFloat(h4Style, "fontSize").toInt()
+    h4Bold = h4Style?.getBoolean("bold") == true
+
+    val h5Style = style.getMap("h5")
+    h5FontSize = parseFloat(h5Style, "fontSize").toInt()
+    h5Bold = h5Style?.getBoolean("bold") == true
+
+    val h6Style = style.getMap("h6")
+    h6FontSize = parseFloat(h6Style, "fontSize").toInt()
+    h6Bold = h6Style?.getBoolean("bold") == true
+
     val blockquoteStyle = style.getMap("blockquote")
     blockquoteColor = parseOptionalColor(blockquoteStyle, "color")
     blockquoteBorderColor = parseColor(blockquoteStyle, "borderColor")
diff --git a/android/src/main/java/com/swmansion/enriched/utils/EnrichedParser.java b/android/src/main/java/com/swmansion/enriched/utils/EnrichedParser.java
index 46e08f72b..782cc1d2e 100644
--- a/android/src/main/java/com/swmansion/enriched/utils/EnrichedParser.java
+++ b/android/src/main/java/com/swmansion/enriched/utils/EnrichedParser.java
@@ -16,6 +16,9 @@
 import com.swmansion.enriched.spans.EnrichedH1Span;
 import com.swmansion.enriched.spans.EnrichedH2Span;
 import com.swmansion.enriched.spans.EnrichedH3Span;
+import com.swmansion.enriched.spans.EnrichedH4Span;
+import com.swmansion.enriched.spans.EnrichedH5Span;
+import com.swmansion.enriched.spans.EnrichedH6Span;
 import com.swmansion.enriched.spans.EnrichedImageSpan;
 import com.swmansion.enriched.spans.EnrichedInlineCodeSpan;
 import com.swmansion.enriched.spans.EnrichedItalicSpan;
@@ -153,6 +156,12 @@ private static String getBlockTag(EnrichedParagraphSpan[] spans) {
         return "h2";
       } else if (span instanceof EnrichedH3Span) {
         return "h3";
+      } else if (span instanceof EnrichedH4Span) {
+        return "h4";
+      } else if (span instanceof EnrichedH5Span) {
+        return "h5";
+      } else if (span instanceof EnrichedH6Span) {
+        return "h6";
       }
     }
 
@@ -452,6 +461,12 @@ private void handleStartTag(String tag, Attributes attributes) {
       startHeading(mSpannableStringBuilder, 2);
     } else if (tag.equalsIgnoreCase("h3")) {
       startHeading(mSpannableStringBuilder, 3);
+    } else if (tag.equalsIgnoreCase("h4")) {
+      startHeading(mSpannableStringBuilder, 4);
+    } else if (tag.equalsIgnoreCase("h5")) {
+      startHeading(mSpannableStringBuilder, 5);
+    } else if (tag.equalsIgnoreCase("h6")) {
+      startHeading(mSpannableStringBuilder, 6);
     } else if (tag.equalsIgnoreCase("img")) {
       startImg(mSpannableStringBuilder, attributes, mImageGetter, mStyle);
     } else if (tag.equalsIgnoreCase("code")) {
@@ -490,6 +505,12 @@ private void handleEndTag(String tag) {
       endHeading(mSpannableStringBuilder, mStyle, 2);
     } else if (tag.equalsIgnoreCase("h3")) {
       endHeading(mSpannableStringBuilder, mStyle, 3);
+    } else if (tag.equalsIgnoreCase("h4")) {
+      endHeading(mSpannableStringBuilder, mStyle, 4);
+    } else if (tag.equalsIgnoreCase("h5")) {
+      endHeading(mSpannableStringBuilder, mStyle, 5);
+    } else if (tag.equalsIgnoreCase("h6")) {
+      endHeading(mSpannableStringBuilder, mStyle, 6);
     } else if (tag.equalsIgnoreCase("code")) {
       end(mSpannableStringBuilder, Code.class, new EnrichedInlineCodeSpan(mStyle));
     } else if (tag.equalsIgnoreCase("mention")) {
@@ -593,6 +614,15 @@ private void startHeading(Editable text, int level) {
       case 3:
         start(text, new H3());
         break;
+      case 4:
+        start(text, new H4());
+        break;
+      case 5:
+        start(text, new H5());
+        break;
+      case 6:
+        start(text, new H6());
+        break;
       default:
         throw new IllegalArgumentException("Unsupported heading level: " + level);
     }
@@ -614,6 +644,18 @@ private static void endHeading(Editable text, HtmlStyle style, int level) {
         H3 lastH3 = getLast(text, H3.class);
         setParagraphSpanFromMark(text, lastH3, new EnrichedH3Span(style));
         break;
+      case 4:
+        H4 lastH4 = getLast(text, H4.class);
+        setParagraphSpanFromMark(text, lastH4, new EnrichedH4Span(style));
+        break;
+      case 5:
+        H5 lastH5 = getLast(text, H5.class);
+        setParagraphSpanFromMark(text, lastH5, new EnrichedH5Span(style));
+        break;
+      case 6:
+        H6 lastH6 = getLast(text, H6.class);
+        setParagraphSpanFromMark(text, lastH6, new EnrichedH6Span(style));
+        break;
       default:
         throw new IllegalArgumentException("Unsupported heading level: " + level);
     }
@@ -807,6 +849,15 @@ private static class H2 {
   private static class H3 {
   }
 
+  private static class H4 {
+  }
+
+  private static class H5 {
+  }
+
+  private static class H6 {
+  }
+
   private static class Bold {
   }
 
diff --git a/android/src/main/java/com/swmansion/enriched/utils/EnrichedSpanState.kt b/android/src/main/java/com/swmansion/enriched/utils/EnrichedSpanState.kt
index ff733dd4f..66f86729a 100644
--- a/android/src/main/java/com/swmansion/enriched/utils/EnrichedSpanState.kt
+++ b/android/src/main/java/com/swmansion/enriched/utils/EnrichedSpanState.kt
@@ -27,6 +27,12 @@ class EnrichedSpanState(private val view: EnrichedTextInputView) {
     private set
   var h3Start: Int? = null
     private set
+  var h4Start: Int? = null
+    private set
+  var h5Start: Int? = null
+    private set
+  var h6Start: Int? = null
+    private set
   var codeBlockStart: Int? = null
     private set
   var blockQuoteStart: Int? = null
@@ -82,6 +88,21 @@ class EnrichedSpanState(private val view: EnrichedTextInputView) {
     emitStateChangeEvent()
   }
 
+  fun setH4Start(start: Int?) {
+    this.h4Start = start
+    emitStateChangeEvent()
+  }
+
+  fun setH5Start(start: Int?) {
+    this.h5Start = start
+    emitStateChangeEvent()
+  }
+
+  fun setH6Start(start: Int?) {
+    this.h6Start = start
+    emitStateChangeEvent()
+  }
+
   fun setCodeBlockStart(start: Int?) {
     this.codeBlockStart = start
     emitStateChangeEvent()
@@ -127,6 +148,9 @@ class EnrichedSpanState(private val view: EnrichedTextInputView) {
       EnrichedSpans.H1 -> h1Start
       EnrichedSpans.H2 -> h2Start
       EnrichedSpans.H3 -> h3Start
+      EnrichedSpans.H4 -> h4Start
+      EnrichedSpans.H5 -> h5Start
+      EnrichedSpans.H6 -> h6Start
       EnrichedSpans.CODE_BLOCK -> codeBlockStart
       EnrichedSpans.BLOCK_QUOTE -> blockQuoteStart
       EnrichedSpans.ORDERED_LIST -> orderedListStart
@@ -150,6 +174,9 @@ class EnrichedSpanState(private val view: EnrichedTextInputView) {
       EnrichedSpans.H1 -> setH1Start(start)
       EnrichedSpans.H2 -> setH2Start(start)
       EnrichedSpans.H3 -> setH3Start(start)
+      EnrichedSpans.H4 -> setH4Start(start)
+      EnrichedSpans.H5 -> setH5Start(start)
+      EnrichedSpans.H6 -> setH6Start(start)
       EnrichedSpans.CODE_BLOCK -> setCodeBlockStart(start)
       EnrichedSpans.BLOCK_QUOTE -> setBlockQuoteStart(start)
       EnrichedSpans.ORDERED_LIST -> setOrderedListStart(start)
@@ -170,6 +197,9 @@ class EnrichedSpanState(private val view: EnrichedTextInputView) {
     payload.putBoolean("isH1", h1Start != null)
     payload.putBoolean("isH2", h2Start != null)
     payload.putBoolean("isH3", h3Start != null)
+    payload.putBoolean("isH4", h4Start != null)
+    payload.putBoolean("isH5", h5Start != null)
+    payload.putBoolean("isH6", h6Start != null)
     payload.putBoolean("isCodeBlock", codeBlockStart != null)
     payload.putBoolean("isBlockQuote", blockQuoteStart != null)
     payload.putBoolean("isOrderedList", orderedListStart != null)
diff --git a/example/src/App.tsx b/example/src/App.tsx
index 3c29531fe..dedaa2969 100644
--- a/example/src/App.tsx
+++ b/example/src/App.tsx
@@ -47,6 +47,9 @@ const DEFAULT_STYLE: StylesState = {
   isH1: false,
   isH2: false,
   isH3: false,
+  isH4: false,
+  isH5: false,
+  isH6: false,
   isBlockQuote: false,
   isCodeBlock: false,
   isOrderedList: false,
@@ -341,14 +344,26 @@ export default function App() {
 
 const htmlStyle: HtmlStyle = {
   h1: {
-    fontSize: 40,
+    fontSize: 72,
     bold: true,
   },
   h2: {
-    fontSize: 32,
+    fontSize: 60,
     bold: true,
   },
   h3: {
+    fontSize: 50,
+    bold: true,
+  },
+  h4: {
+    fontSize: 40,
+    bold: true,
+  },
+  h5: {
+    fontSize: 30,
+    bold: true,
+  },
+  h6: {
     fontSize: 24,
     bold: true,
   },
diff --git a/example/src/components/Toolbar.tsx b/example/src/components/Toolbar.tsx
index 28c99b48a..6fad4c527 100644
--- a/example/src/components/Toolbar.tsx
+++ b/example/src/components/Toolbar.tsx
@@ -39,6 +39,18 @@ const STYLE_ITEMS = [
     name: 'heading-3',
     text: 'H3',
   },
+  {
+    name: 'heading-4',
+    text: 'H4',
+  },
+  {
+    name: 'heading-5',
+    text: 'H5',
+  },
+  {
+    name: 'heading-6',
+    text: 'H6',
+  },
   {
     name: 'quote',
     icon: 'quote-right',
@@ -114,6 +126,15 @@ export const Toolbar: FC<ToolbarProps> = ({
       case 'heading-3':
         editorRef.current?.toggleH3();
         break;
+      case 'heading-4':
+        editorRef.current?.toggleH4();
+        break;
+      case 'heading-5':
+        editorRef.current?.toggleH5();
+        break;
+      case 'heading-6':
+        editorRef.current?.toggleH6();
+        break;
       case 'code-block':
         editorRef?.current?.toggleCodeBlock();
         break;
@@ -156,6 +177,12 @@ export const Toolbar: FC<ToolbarProps> = ({
         return stylesState.isH2;
       case 'heading-3':
         return stylesState.isH3;
+      case 'heading-4':
+        return stylesState.isH4;
+      case 'heading-5':
+        return stylesState.isH5;
+      case 'heading-6':
+        return stylesState.isH6;
       case 'code-block':
         return stylesState.isCodeBlock;
       case 'quote':
diff --git a/ios/EnrichedTextInputView.mm b/ios/EnrichedTextInputView.mm
index f145feefa..6022d96c2 100644
--- a/ios/EnrichedTextInputView.mm
+++ b/ios/EnrichedTextInputView.mm
@@ -91,6 +91,9 @@ - (void)setDefaults {
     @([H1Style getStyleType]): [[H1Style alloc] initWithInput:self],
     @([H2Style getStyleType]): [[H2Style alloc] initWithInput:self],
     @([H3Style getStyleType]): [[H3Style alloc] initWithInput:self],
+    @([H4Style getStyleType]): [[H4Style alloc] initWithInput:self],
+    @([H5Style getStyleType]): [[H5Style alloc] initWithInput:self],
+    @([H6Style getStyleType]): [[H6Style alloc] initWithInput:self],
     @([UnorderedListStyle getStyleType]): [[UnorderedListStyle alloc] initWithInput:self],
     @([OrderedListStyle getStyleType]): [[OrderedListStyle alloc] initWithInput:self],
     @([BlockQuoteStyle getStyleType]): [[BlockQuoteStyle alloc] initWithInput:self],
@@ -106,13 +109,16 @@ - (void)setDefaults {
     @([InlineCodeStyle getStyleType]) : @[@([LinkStyle getStyleType]), @([MentionStyle getStyleType])],
     @([LinkStyle getStyleType]): @[@([InlineCodeStyle getStyleType]), @([LinkStyle getStyleType]), @([MentionStyle getStyleType])],
     @([MentionStyle getStyleType]): @[@([InlineCodeStyle getStyleType]), @([LinkStyle getStyleType])],
-    @([H1Style getStyleType]): @[@([H2Style getStyleType]), @([H3Style getStyleType]), @([UnorderedListStyle getStyleType]), @([OrderedListStyle getStyleType]), @([BlockQuoteStyle getStyleType]), @([CodeBlockStyle getStyleType])],
-    @([H2Style getStyleType]): @[@([H1Style getStyleType]), @([H3Style getStyleType]), @([UnorderedListStyle getStyleType]), @([OrderedListStyle getStyleType]), @([BlockQuoteStyle getStyleType]), @([CodeBlockStyle getStyleType])],
-    @([H3Style getStyleType]): @[@([H1Style getStyleType]), @([H2Style getStyleType]), @([UnorderedListStyle getStyleType]), @([OrderedListStyle getStyleType]), @([BlockQuoteStyle getStyleType]), @([CodeBlockStyle getStyleType])],
-    @([UnorderedListStyle getStyleType]): @[@([H1Style getStyleType]), @([H2Style getStyleType]), @([H3Style getStyleType]), @([OrderedListStyle getStyleType]), @([BlockQuoteStyle getStyleType]), @([CodeBlockStyle getStyleType])],
-    @([OrderedListStyle getStyleType]): @[@([H1Style getStyleType]), @([H2Style getStyleType]), @([H3Style getStyleType]), @([UnorderedListStyle getStyleType]), @([BlockQuoteStyle getStyleType]), @([CodeBlockStyle getStyleType])],
-    @([BlockQuoteStyle getStyleType]): @[@([H1Style getStyleType]), @([H2Style getStyleType]), @([H3Style getStyleType]), @([UnorderedListStyle getStyleType]), @([OrderedListStyle getStyleType]), @([CodeBlockStyle getStyleType])],
-    @([CodeBlockStyle getStyleType]): @[@([H1Style getStyleType]), @([H2Style getStyleType]), @([H3Style getStyleType]),
+    @([H1Style getStyleType]): @[@([H2Style getStyleType]), @([H3Style getStyleType]), @([H4Style getStyleType]), @([H5Style getStyleType]), @([H6Style getStyleType]), @([UnorderedListStyle getStyleType]), @([OrderedListStyle getStyleType]), @([BlockQuoteStyle getStyleType])],
+    @([H2Style getStyleType]): @[@([H1Style getStyleType]),  @([H3Style getStyleType]), @([H4Style getStyleType]), @([H5Style getStyleType]), @([H6Style getStyleType]), @([UnorderedListStyle getStyleType]), @([OrderedListStyle getStyleType]), @([BlockQuoteStyle getStyleType])],
+    @([H3Style getStyleType]): @[@([H1Style getStyleType]), @([H2Style getStyleType]), @([H4Style getStyleType]), @([H5Style getStyleType]), @([H6Style getStyleType]), @([UnorderedListStyle getStyleType]), @([OrderedListStyle getStyleType]), @([BlockQuoteStyle getStyleType])],
+    @([H4Style getStyleType]): @[@([H1Style getStyleType]), @([H2Style getStyleType]), @([H3Style getStyleType]), @([H5Style getStyleType]), @([H6Style getStyleType]), @([UnorderedListStyle getStyleType]), @([OrderedListStyle getStyleType]), @([BlockQuoteStyle getStyleType])],
+    @([H5Style getStyleType]): @[@([H1Style getStyleType]), @([H2Style getStyleType]),  @([H3Style getStyleType]), @([H4Style getStyleType]), @([H6Style getStyleType]), @([UnorderedListStyle getStyleType]), @([OrderedListStyle getStyleType]), @([BlockQuoteStyle getStyleType])],
+    @([H6Style getStyleType]): @[@([H1Style getStyleType]), @([H2Style getStyleType]), @([H3Style getStyleType]), @([H4Style getStyleType]), @([H5Style getStyleType]), @([UnorderedListStyle getStyleType]), @([OrderedListStyle getStyleType]), @([BlockQuoteStyle getStyleType])],
+    @([UnorderedListStyle getStyleType]): @[@([H1Style getStyleType]), @([H2Style getStyleType]), @([H3Style getStyleType]), @([H4Style getStyleType]), @([H5Style getStyleType]), @([H6Style getStyleType]), @([OrderedListStyle getStyleType]), @([BlockQuoteStyle getStyleType])],
+    @([OrderedListStyle getStyleType]): @[@([H1Style getStyleType]), @([H2Style getStyleType]), @([H3Style getStyleType]), @([H4Style getStyleType]), @([H5Style getStyleType]), @([H6Style getStyleType]), @([UnorderedListStyle getStyleType]), @([BlockQuoteStyle getStyleType])],
+    @([BlockQuoteStyle getStyleType]): @[@([H1Style getStyleType]), @([H2Style getStyleType]), @([H3Style getStyleType]), @([H4Style getStyleType]), @([H5Style getStyleType]), @([H6Style getStyleType]), @([UnorderedListStyle getStyleType]), @([OrderedListStyle getStyleType])],
+    @([CodeBlockStyle getStyleType]): @[@([H1Style getStyleType]), @([H2Style getStyleType]), @([H3Style getStyleType]), @([H4Style getStyleType]), @([H5Style getStyleType]), @([H6Style getStyleType]),
         @([BoldStyle getStyleType]), @([ItalicStyle getStyleType]), @([UnderlineStyle getStyleType]), @([StrikethroughStyle getStyleType]), @([UnorderedListStyle getStyleType]), @([OrderedListStyle getStyleType]), @([BlockQuoteStyle getStyleType]), @([InlineCodeStyle getStyleType]), @([MentionStyle getStyleType]), @([LinkStyle getStyleType])],
     @([ImageStyle getStyleType]) : @[@([LinkStyle getStyleType]), @([MentionStyle getStyleType])]
   };
@@ -128,6 +134,9 @@ - (void)setDefaults {
     @([H1Style getStyleType]): @[],
     @([H2Style getStyleType]): @[],
     @([H3Style getStyleType]): @[],
+    @([H4Style getStyleType]): @[],
+    @([H5Style getStyleType]): @[],
+    @([H6Style getStyleType]): @[],
     @([UnorderedListStyle getStyleType]): @[],
     @([OrderedListStyle getStyleType]): @[],
     @([BlockQuoteStyle getStyleType]): @[],
@@ -252,6 +261,36 @@ - (void)updateProps:(Props::Shared const &)props oldProps:(Props::Shared const &
     stylePropChanged = YES;
   }
   
+  if(newViewProps.htmlStyle.h4.fontSize != oldViewProps.htmlStyle.h4.fontSize) {
+    [newConfig setH4FontSize:newViewProps.htmlStyle.h4.fontSize];
+    stylePropChanged = YES;
+  }
+  
+  if(newViewProps.htmlStyle.h4.bold != oldViewProps.htmlStyle.h4.bold) {
+    [newConfig setH4Bold:newViewProps.htmlStyle.h4.bold];
+    stylePropChanged = YES;
+  }
+  
+  if(newViewProps.htmlStyle.h5.fontSize != oldViewProps.htmlStyle.h5.fontSize) {
+    [newConfig setH5FontSize:newViewProps.htmlStyle.h5.fontSize];
+    stylePropChanged = YES;
+  }
+  
+  if(newViewProps.htmlStyle.h5.bold != oldViewProps.htmlStyle.h5.bold) {
+    [newConfig setH5Bold:newViewProps.htmlStyle.h5.bold];
+    stylePropChanged = YES;
+  }
+  
+  if(newViewProps.htmlStyle.h6.fontSize != oldViewProps.htmlStyle.h6.fontSize) {
+    [newConfig setH6FontSize:newViewProps.htmlStyle.h6.fontSize];
+    stylePropChanged = YES;
+  }
+  
+  if(newViewProps.htmlStyle.h6.bold != oldViewProps.htmlStyle.h6.bold) {
+    [newConfig setH6Bold:newViewProps.htmlStyle.h6.bold];
+    stylePropChanged = YES;
+  }
+  
   if(newViewProps.htmlStyle.blockquote.borderColor != oldViewProps.htmlStyle.blockquote.borderColor) {
     if(isColorMeaningful(newViewProps.htmlStyle.blockquote.borderColor)) {
       [newConfig setBlockquoteBorderColor:RCTUIColorFromSharedColor(newViewProps.htmlStyle.blockquote.borderColor)];
@@ -732,6 +771,9 @@ - (void)tryUpdatingActiveStyles {
         .isH1 = [_activeStyles containsObject: @([H1Style getStyleType])],
         .isH2 = [_activeStyles containsObject: @([H2Style getStyleType])],
         .isH3 = [_activeStyles containsObject: @([H3Style getStyleType])],
+        .isH4 = [_activeStyles containsObject: @([H4Style getStyleType])],
+        .isH5 = [_activeStyles containsObject: @([H5Style getStyleType])],
+        .isH6 = [_activeStyles containsObject: @([H6Style getStyleType])],
         .isUnorderedList = [_activeStyles containsObject: @([UnorderedListStyle getStyleType])],
         .isOrderedList = [_activeStyles containsObject: @([OrderedListStyle getStyleType])],
         .isBlockQuote = [_activeStyles containsObject: @([BlockQuoteStyle getStyleType])],
@@ -798,6 +840,12 @@ - (void)handleCommand:(const NSString *)commandName args:(const NSArray *)args {
     [self toggleParagraphStyle:[H2Style getStyleType]];
   } else if([commandName isEqualToString:@"toggleH3"]) {
     [self toggleParagraphStyle:[H3Style getStyleType]];
+  } else if([commandName isEqualToString:@"toggleH4"]) {
+    [self toggleParagraphStyle:[H4Style getStyleType]];
+  } else if([commandName isEqualToString:@"toggleH5"]) {
+    [self toggleParagraphStyle:[H5Style getStyleType]];
+  } else if([commandName isEqualToString:@"toggleH6"]) {
+    [self toggleParagraphStyle:[H6Style getStyleType]];
   } else if([commandName isEqualToString:@"toggleUnorderedList"]) {
     [self toggleParagraphStyle:[UnorderedListStyle getStyleType]];
   } else if([commandName isEqualToString:@"toggleOrderedList"]) {
@@ -1106,10 +1154,21 @@ - (void)anyTextMayHaveBeenModified {
   H1Style *h1Style = stylesDict[@([H1Style getStyleType])];
   H2Style *h2Style = stylesDict[@([H2Style getStyleType])];
   H3Style *h3Style = stylesDict[@([H3Style getStyleType])];
-  if(h1Style != nullptr && h2Style != nullptr && h3Style != nullptr) {
+  H4Style *h4Style = stylesDict[@([H4Style getStyleType])];
+  H5Style *h5Style = stylesDict[@([H5Style getStyleType])];
+  H6Style *h6Style = stylesDict[@([H6Style getStyleType])];
+  
+  bool hasImproperHeadingStyles =
+    h1Style != nullptr && h2Style != nullptr && h3Style != nullptr &&
+    h4Style != nullptr && h5Style != nullptr && h6Style != nullptr;
+
+  if(hasImproperHeadingStyles) {
     [h1Style handleImproperHeadings];
     [h2Style handleImproperHeadings];
     [h3Style handleImproperHeadings];
+    [h4Style handleImproperHeadings];
+    [h5Style handleImproperHeadings];
+    [h6Style handleImproperHeadings];
   }
   
   // mentions removal management
@@ -1233,6 +1292,9 @@ - (bool)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range r
   H1Style *h1Style = stylesDict[@([H1Style getStyleType])];
   H2Style *h2Style = stylesDict[@([H2Style getStyleType])];
   H3Style *h3Style = stylesDict[@([H3Style getStyleType])];
+  H4Style *h4Style = stylesDict[@([H4Style getStyleType])];
+  H5Style *h5Style = stylesDict[@([H5Style getStyleType])];
+  H6Style *h6Style = stylesDict[@([H6Style getStyleType])];
   
   // some of the changes these checks do could interfere with later checks and cause a crash
   // so here I rely on short circuiting evaluation of the logical expression
@@ -1249,6 +1311,9 @@ - (bool)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range r
     [h1Style handleNewlinesInRange:range replacementText:text] ||
     [h2Style handleNewlinesInRange:range replacementText:text] ||
     [h3Style handleNewlinesInRange:range replacementText:text] ||
+    [h4Style handleNewlinesInRange:range replacementText:text] ||
+    [h5Style handleNewlinesInRange:range replacementText:text] ||
+    [h6Style handleNewlinesInRange:range replacementText:text] ||
     [ZeroWidthSpaceUtils handleBackspaceInRange:range replacementText:text input:self] ||
     [ParagraphAttributesUtils handleBackspaceInRange:range replacementText:text input:self] ||
     // CRITICAL: This callback HAS TO be always evaluated last.
diff --git a/ios/config/InputConfig.h b/ios/config/InputConfig.h
index e73935413..cff127c18 100644
--- a/ios/config/InputConfig.h
+++ b/ios/config/InputConfig.h
@@ -29,6 +29,18 @@
 - (void)setH3FontSize:(CGFloat)newValue;
 - (BOOL)h3Bold;
 - (void)setH3Bold:(BOOL)newValue;
+- (CGFloat)h4FontSize;
+- (void)setH4FontSize:(CGFloat)newValue;
+- (BOOL)h4Bold;
+- (void)setH4Bold:(BOOL)newValue;
+- (CGFloat)h5FontSize;
+- (void)setH5FontSize:(CGFloat)newValue;
+- (BOOL)h5Bold;
+- (void)setH5Bold:(BOOL)newValue;
+- (CGFloat)h6FontSize;
+- (void)setH6FontSize:(CGFloat)newValue;
+- (BOOL)h6Bold;
+- (void)setH6Bold:(BOOL)newValue;
 - (UIColor *)blockquoteBorderColor;
 - (void)setBlockquoteBorderColor:(UIColor *)newValue;
 - (CGFloat)blockquoteBorderWidth;
diff --git a/ios/config/InputConfig.mm b/ios/config/InputConfig.mm
index 0e5287c74..631b3f9f5 100644
--- a/ios/config/InputConfig.mm
+++ b/ios/config/InputConfig.mm
@@ -17,6 +17,12 @@ @implementation InputConfig {
   BOOL _h2Bold;
   CGFloat _h3FontSize;
   BOOL _h3Bold;
+  CGFloat _h4FontSize;
+  BOOL _h4Bold;
+  CGFloat _h5FontSize;
+  BOOL _h5Bold;
+  CGFloat _h6FontSize;
+  BOOL _h6Bold;
   UIColor *_blockquoteBorderColor;
   CGFloat _blockquoteBorderWidth;
   CGFloat _blockquoteGapWidth;
@@ -66,6 +72,12 @@ - (id)copyWithZone:(NSZone *)zone {
   copy->_h2Bold = _h2Bold;
   copy->_h3FontSize = _h3FontSize;
   copy->_h3Bold = _h3Bold;
+  copy->_h4FontSize = _h4FontSize;
+  copy->_h4Bold = _h4Bold;
+  copy->_h5FontSize = _h5FontSize;
+  copy->_h5Bold = _h5Bold;
+  copy->_h6FontSize = _h6FontSize;
+  copy->_h6Bold = _h6Bold;
   copy->_blockquoteBorderColor = [_blockquoteBorderColor copy];
   copy->_blockquoteBorderWidth = _blockquoteBorderWidth;
   copy->_blockquoteGapWidth = _blockquoteGapWidth;
@@ -218,6 +230,54 @@ - (void)setH3Bold:(BOOL)newValue {
   _h3Bold = newValue;
 }
 
+- (CGFloat)h4FontSize {
+  return _h4FontSize;
+}
+
+- (void)setH4FontSize:(CGFloat)newValue {
+  _h4FontSize = newValue;
+}
+
+- (BOOL)h4Bold {
+  return _h4Bold;
+}
+
+- (void)setH4Bold:(BOOL)newValue {
+  _h4Bold = newValue;
+}
+
+- (CGFloat)h5FontSize {
+  return _h5FontSize;
+}
+
+- (void)setH5FontSize:(CGFloat)newValue {
+  _h5FontSize = newValue;
+}
+
+- (BOOL)h5Bold {
+  return _h5Bold;
+}
+
+- (void)setH5Bold:(BOOL)newValue {
+  _h5Bold = newValue;
+}
+
+- (CGFloat)h6FontSize {
+  return _h6FontSize;
+}
+
+- (void)setH6FontSize:(CGFloat)newValue {
+  _h6FontSize = newValue;
+}
+
+- (BOOL)h6Bold {
+  return _h6Bold;
+}
+
+- (void)setH6Bold:(BOOL)newValue {
+  _h6Bold = newValue;
+}
+
 - (UIColor *)blockquoteBorderColor {
   return _blockquoteBorderColor;
 }
diff --git a/ios/inputParser/InputParser.mm b/ios/inputParser/InputParser.mm
index 10f250aba..03c666122 100644
--- a/ios/inputParser/InputParser.mm
+++ b/ios/inputParser/InputParser.mm
@@ -166,6 +166,9 @@ - (NSString *)parseToHtmlFromRange:(NSRange)range {
            [currentActiveStyles containsObject:@([H1Style getStyleType])] ||
            [currentActiveStyles containsObject:@([H2Style getStyleType])] ||
            [currentActiveStyles containsObject:@([H3Style getStyleType])] ||
+           [currentActiveStyles containsObject:@([H4Style getStyleType])] ||
+           [currentActiveStyles containsObject:@([H5Style getStyleType])] ||
+           [currentActiveStyles containsObject:@([H6Style getStyleType])] ||
            [currentActiveStyles containsObject:@([BlockQuoteStyle getStyleType])] ||
            [currentActiveStyles containsObject:@([CodeBlockStyle getStyleType])]
         ) {
@@ -284,9 +287,12 @@ - (NSString *)parseToHtmlFromRange:(NSRange)range {
     } else if(
       [previousActiveStyles containsObject:@([H1Style getStyleType])] ||
       [previousActiveStyles containsObject:@([H2Style getStyleType])] ||
-      [previousActiveStyles containsObject:@([H3Style getStyleType])]
+      [previousActiveStyles containsObject:@([H3Style getStyleType])] ||
+      [previousActiveStyles containsObject:@([H4Style getStyleType])] || 
+      [previousActiveStyles containsObject:@([H5Style getStyleType])] ||
+      [previousActiveStyles containsObject:@([H6Style getStyleType])] 
     ) {
-      // do nothing, heading closing tag has already ben appended
+      // do nothing, heading closing tag has already been appended
     } else {
       [result appendString:@"</p>"];
     }
@@ -389,6 +395,12 @@ - (NSString *)tagContentForStyle:(NSNumber *)style openingTag:(BOOL)openingTag l
     return @"h2";
   } else if([style isEqualToNumber:@([H3Style getStyleType])]) {
     return @"h3";
+  } else if([style isEqualToNumber:@([H4Style getStyleType])]) {
+    return @"h4";
+  } else if([style isEqualToNumber:@([H5Style getStyleType])]) {
+    return @"h5";
+  } else if([style isEqualToNumber:@([H6Style getStyleType])]) {
+    return @"h6";
   } else if([style isEqualToNumber:@([UnorderedListStyle getStyleType])] || [style isEqualToNumber:@([OrderedListStyle getStyleType])]) {
     return @"li";
   } else if([style isEqualToNumber:@([BlockQuoteStyle getStyleType])] || [style isEqualToNumber:@([CodeBlockStyle getStyleType])]) {
@@ -519,6 +531,9 @@ - (NSString * _Nullable)initiallyProcessHtml:(NSString * _Nonnull)html {
     fixedHtml = [self stringByAddingNewlinesToTag:@"<h1>" inString:fixedHtml leading:YES trailing:NO];
     fixedHtml = [self stringByAddingNewlinesToTag:@"<h2>" inString:fixedHtml leading:YES trailing:NO];
     fixedHtml = [self stringByAddingNewlinesToTag:@"<h3>" inString:fixedHtml leading:YES trailing:NO];
+    fixedHtml = [self stringByAddingNewlinesToTag:@"<h4>" inString:fixedHtml leading:YES trailing:NO];
+    fixedHtml = [self stringByAddingNewlinesToTag:@"<h5>" inString:fixedHtml leading:YES trailing:NO];
+    fixedHtml = [self stringByAddingNewlinesToTag:@"<h6>" inString:fixedHtml leading:YES trailing:NO];
     
     // line closing tags
     fixedHtml = [self stringByAddingNewlinesToTag:@"</p>" inString:fixedHtml leading:NO trailing:YES];
@@ -526,6 +541,9 @@ - (NSString * _Nullable)initiallyProcessHtml:(NSString * _Nonnull)html {
     fixedHtml = [self stringByAddingNewlinesToTag:@"</h1>" inString:fixedHtml leading:NO trailing:YES];
     fixedHtml = [self stringByAddingNewlinesToTag:@"</h2>" inString:fixedHtml leading:NO trailing:YES];
     fixedHtml = [self stringByAddingNewlinesToTag:@"</h3>" inString:fixedHtml leading:NO trailing:YES];
+    fixedHtml = [self stringByAddingNewlinesToTag:@"</h4>" inString:fixedHtml leading:NO trailing:YES];
+    fixedHtml = [self stringByAddingNewlinesToTag:@"</h5>" inString:fixedHtml leading:NO trailing:YES];
+    fixedHtml = [self stringByAddingNewlinesToTag:@"</h6>" inString:fixedHtml leading:NO trailing:YES];
   }
   
   return fixedHtml;
@@ -745,6 +763,12 @@ - (NSArray *)getTextAndStylesFromHtml:(NSString *)fixedHtml {
         [styleArr addObject:@([H2Style getStyleType])];
       } else if([tagName isEqualToString:@"h3"]) {
         [styleArr addObject:@([H3Style getStyleType])];
+      } else if([tagName isEqualToString:@"h4"]) {
+        [styleArr addObject:@([H4Style getStyleType])];
+      } else if([tagName isEqualToString:@"h5"]) {
+        [styleArr addObject:@([H5Style getStyleType])];
+      } else if([tagName isEqualToString:@"h6"]) {
+        [styleArr addObject:@([H6Style getStyleType])];
       }
     } else if([tagName isEqualToString:@"ul"]) {
       [styleArr addObject:@([UnorderedListStyle getStyleType])];
diff --git a/ios/styles/BoldStyle.mm b/ios/styles/BoldStyle.mm
index 78b80b4a2..28ac55bfd 100644
--- a/ios/styles/BoldStyle.mm
+++ b/ios/styles/BoldStyle.mm
@@ -79,6 +79,12 @@ - (BOOL)boldHeadingConflictsInRange:(NSRange)range type:(StyleType)type {
     if(![_input->config h2Bold]) { return NO; }
   } else if(type == H3) {
     if(![_input->config h3Bold]) { return NO; }
+  } else if(type == H4) {
+    if(![_input->config h4Bold]) { return NO; }
+  } else if(type == H5) {
+    if(![_input->config h5Bold]) { return NO; }
+  } else if(type == H6) {
+    if(![_input->config h6Bold]) { return NO; }
   }
   
   id<BaseStyleProtocol> headingStyle = _input->stylesDict[@(type)];
@@ -89,7 +95,7 @@ - (BOOL)boldHeadingConflictsInRange:(NSRange)range type:(StyleType)type {
 
 - (BOOL)styleCondition:(id _Nullable)value :(NSRange)range {
   UIFont *font = (UIFont *)value;
-  return font != nullptr && [font isBold] && ![self boldHeadingConflictsInRange:range type:H1] && ![self boldHeadingConflictsInRange:range type:H2] && ![self boldHeadingConflictsInRange:range type:H3];
+  return font != nullptr && [font isBold] && ![self boldHeadingConflictsInRange:range type:H1] && ![self boldHeadingConflictsInRange:range type:H2] && ![self boldHeadingConflictsInRange:range type:H3] && ![self boldHeadingConflictsInRange:range type:H4] && ![self boldHeadingConflictsInRange:range type:H5] && ![self boldHeadingConflictsInRange:range type:H6];
 }
 
 - (BOOL)detectStyle:(NSRange)range {
diff --git a/ios/styles/H4Style.mm b/ios/styles/H4Style.mm
new file mode 100644
index 000000000..2c76eb37a
--- /dev/null
+++ b/ios/styles/H4Style.mm
@@ -0,0 +1,10 @@
+#import "StyleHeaders.h"
+#import "EnrichedTextInputView.h"
+
+@implementation H4Style
++ (StyleType)getStyleType { return H4; }
+- (CGFloat)getHeadingFontSize { return [((EnrichedTextInputView *)input)->config h4FontSize]; }
+- (BOOL)isHeadingBold {
+  return [((EnrichedTextInputView *)input)->config h4Bold];
+}
+@end
diff --git a/ios/styles/H5Style.mm b/ios/styles/H5Style.mm
new file mode 100644
index 000000000..b47a69120
--- /dev/null
+++ b/ios/styles/H5Style.mm
@@ -0,0 +1,10 @@
+#import "StyleHeaders.h"
+#import "EnrichedTextInputView.h"
+
+@implementation H5Style
++ (StyleType)getStyleType { return H5; }
+- (CGFloat)getHeadingFontSize { return [((EnrichedTextInputView *)input)->config h5FontSize]; }
+- (BOOL)isHeadingBold {
+  return [((EnrichedTextInputView *)input)->config h5Bold];
+}
+@end
diff --git a/ios/styles/H6Style.mm b/ios/styles/H6Style.mm
new file mode 100644
index 000000000..f224e9dca
--- /dev/null
+++ b/ios/styles/H6Style.mm
@@ -0,0 +1,10 @@
+#import "StyleHeaders.h"
+#import "EnrichedTextInputView.h"
+
+@implementation H6Style
++ (StyleType)getStyleType { return H6; }
+- (CGFloat)getHeadingFontSize { return [((EnrichedTextInputView *)input)->config h6FontSize]; }
+- (BOOL)isHeadingBold {
+  return [((EnrichedTextInputView *)input)->config h6Bold];
+}
+@end
diff --git a/ios/styles/HeadingStyleBase.mm b/ios/styles/HeadingStyleBase.mm
index 4d3beacab..b1e0699ce 100644
--- a/ios/styles/HeadingStyleBase.mm
+++ b/ios/styles/HeadingStyleBase.mm
@@ -6,7 +6,7 @@
 
 @implementation HeadingStyleBase
 
-// mock values since H1/2/3Style classes anyway are used
+// mock values since H1/2/3/4/5/6Style classes anyway are used
 + (StyleType)getStyleType { return None; }
 - (CGFloat)getHeadingFontSize { return 0; }
 - (BOOL)isHeadingBold { return false; }
diff --git a/ios/utils/StyleHeaders.h b/ios/utils/StyleHeaders.h
index f980529cc..a6f353a79 100644
--- a/ios/utils/StyleHeaders.h
+++ b/ios/utils/StyleHeaders.h
@@ -61,6 +61,15 @@
 @interface H3Style : HeadingStyleBase
 @end
 
+@interface H4Style : HeadingStyleBase
+@end
+
+@interface H5Style : HeadingStyleBase
+@end
+
+@interface H6Style : HeadingStyleBase
+@end
+
 @interface UnorderedListStyle : NSObject<BaseStyleProtocol>
 - (BOOL)handleBackspaceInRange:(NSRange)range replacementText:(NSString *)text;
 - (BOOL)tryHandlingListShorcutInRange:(NSRange)range replacementText:(NSString *)text;
diff --git a/ios/utils/StyleTypeEnum.h b/ios/utils/StyleTypeEnum.h
index d20419ddb..b19fcb087 100644
--- a/ios/utils/StyleTypeEnum.h
+++ b/ios/utils/StyleTypeEnum.h
@@ -10,6 +10,9 @@ typedef NS_ENUM(NSInteger, StyleType) {
   H1,
   H2,
   H3,
+  H4,
+  H5,
+  H6,
   Link,
   Mention,
   Image,
diff --git a/src/EnrichedTextInput.tsx b/src/EnrichedTextInput.tsx
index 07f2d2fe2..0392aac88 100644
--- a/src/EnrichedTextInput.tsx
+++ b/src/EnrichedTextInput.tsx
@@ -47,6 +47,9 @@ export interface EnrichedTextInputInstance extends NativeMethods {
   toggleH1: () => void;
   toggleH2: () => void;
   toggleH3: () => void;
+  toggleH4: () => void;
+  toggleH5: () => void;
+  toggleH6: () => void;
   toggleCodeBlock: () => void;
   toggleBlockQuote: () => void;
   toggleOrderedList: () => void;
@@ -66,19 +69,18 @@ export interface OnChangeMentionEvent {
   text: string;
 }
 
+type HeadingStyle = {
+  fontSize?: number;
+  bold?: boolean;
+};
+
 export interface HtmlStyle {
-  h1?: {
-    fontSize?: number;
-    bold?: boolean;
-  };
-  h2?: {
-    fontSize?: number;
-    bold?: boolean;
-  };
-  h3?: {
-    fontSize?: number;
-    bold?: boolean;
-  };
+  h1?: HeadingStyle;
+  h2?: HeadingStyle;
+  h3?: HeadingStyle;
+  h4?: HeadingStyle;
+  h5?: HeadingStyle;
+  h6?: HeadingStyle;
   blockquote?: {
     borderColor?: ColorValue;
     borderWidth?: number;
@@ -257,6 +259,15 @@ export const EnrichedTextInput = ({
     toggleH3: () => {
       Commands.toggleH3(nullthrows(nativeRef.current));
     },
+    toggleH4: () => {
+      Commands.toggleH4(nullthrows(nativeRef.current));
+    },
+    toggleH5: () => {
+      Commands.toggleH5(nullthrows(nativeRef.current));
+    },
+    toggleH6: () => {
+      Commands.toggleH6(nullthrows(nativeRef.current));
+    },
     toggleCodeBlock: () => {
       Commands.toggleCodeBlock(nullthrows(nativeRef.current));
     },
diff --git a/src/EnrichedTextInputNativeComponent.ts b/src/EnrichedTextInputNativeComponent.ts
index e0b943201..ff0caa6fc 100644
--- a/src/EnrichedTextInputNativeComponent.ts
+++ b/src/EnrichedTextInputNativeComponent.ts
@@ -25,6 +25,9 @@ export interface OnChangeStateEvent {
   isH1: boolean;
   isH2: boolean;
   isH3: boolean;
+  isH4: boolean;
+  isH5: boolean;
+  isH6: boolean;
   isCodeBlock: boolean;
   isBlockQuote: boolean;
   isOrderedList: boolean;
@@ -70,19 +73,18 @@ export interface MentionStyleProperties {
   textDecorationLine?: 'underline' | 'none';
 }
 
+type Heading = {
+  fontSize?: Float;
+  bold?: boolean;
+};
+
 export interface HtmlStyleInternal {
-  h1?: {
-    fontSize?: Float;
-    bold?: boolean;
-  };
-  h2?: {
-    fontSize?: Float;
-    bold?: boolean;
-  };
-  h3?: {
-    fontSize?: Float;
-    bold?: boolean;
-  };
+  h1?: Heading;
+  h2?: Heading;
+  h3?: Heading;
+  h4?: Heading;
+  h5?: Heading;
+  h6?: Heading;
   blockquote?: {
     borderColor?: ColorValue;
     borderWidth?: Float;
@@ -180,6 +182,9 @@ interface NativeCommands {
   toggleH1: (viewRef: React.ElementRef<ComponentType>) => void;
   toggleH2: (viewRef: React.ElementRef<ComponentType>) => void;
   toggleH3: (viewRef: React.ElementRef<ComponentType>) => void;
+  toggleH4: (viewRef: React.ElementRef<ComponentType>) => void;
+  toggleH5: (viewRef: React.ElementRef<ComponentType>) => void;
+  toggleH6: (viewRef: React.ElementRef<ComponentType>) => void;
   toggleCodeBlock: (viewRef: React.ElementRef<ComponentType>) => void;
   toggleBlockQuote: (viewRef: React.ElementRef<ComponentType>) => void;
   toggleOrderedList: (viewRef: React.ElementRef<ComponentType>) => void;
@@ -220,6 +225,9 @@ export const Commands: NativeCommands = codegenNativeCommands<NativeCommands>({
     'toggleH1',
     'toggleH2',
     'toggleH3',
+    'toggleH4',
+    'toggleH5',
+    'toggleH6',
     'toggleCodeBlock',
     'toggleBlockQuote',
     'toggleOrderedList',
diff --git a/src/normalizeHtmlStyle.ts b/src/normalizeHtmlStyle.ts
index 96a7053ea..299cc062f 100644
--- a/src/normalizeHtmlStyle.ts
+++ b/src/normalizeHtmlStyle.ts
@@ -18,6 +18,18 @@ const defaultStyle: Required<HtmlStyle> = {
     fontSize: 20,
     bold: false,
   },
+  h4: {
+    fontSize: 16,
+    bold: false,
+  },
+  h5: {
+    fontSize: 14,
+    bold: false,
+  },
+  h6: {
+    fontSize: 12,
+    bold: false,
+  },
   blockquote: {
     borderColor: 'darkgray',
     borderWidth: 4,