index.html

---
layout: splash
title: "ROOT: Analyzing petabytes of data, scientifically."
author_profile: false
header:
  og_image: /assets/images/ROOT-image-share.png
  overlay_image: /assets/images/splash_optimized.jpg
  actions:
    - label: '<i class="fas fa-info-circle"></i> Learn more'
      url: "about"
    - label: '<i class="fas fa-clipboard-list"></i> {% include root_stable_version %} Release Notes'
      url: 'https://root.cern/doc/v{% include root_stable_version_short %}/release-notes.html#release-{% include root_stable_version %}'
feature_row:
  - title: '<img src="assets/images/histoIcon.svg" alt="*.*" width="65" height="65">'
    excerpt: "Enables processing and scientific analysis of large amounts of data: today, more than 2 exabytes are stored in ROOT files. [The Higgs was discovered with ROOT!](gallery#higgs-plots)"
  - title: '<img src="assets/images/code.svg" alt="*.*" width="65" height="65">'
    excerpt: "[Open source](about/license), which means that you can use it freely and [modify it](getroot/build_from_source). It adopts an open development process, inviting [its users to contribute to it](contribute)."
  - title: '$ _'
    excerpt: "Delivered with a [C++ interpreter](primer#learn-c-at-the-root-prompt), ideal for <i>fast prototyping</i>. ROOT also offers a Python interface to all its components with [dynamic bindings](manual/python/). [Jupyter notebooks are supported too](https://nbviewer.jupyter.org/url/root.cern/doc/master/notebooks/rf301_composition.C.nbconvert.ipynb)."
---

<style>
.mainbuttons {
  width: 100%;
  display: flex;
  flex-flow: row nowrap;
  justify-content: space-around;
}
.mainbutton {
  /* all buttons equally grow to fill the space */
  flex-grow: 1;
  display: flex;
  /* horizontally center all button's children */
  justify-content: center;
  /* vertically center all button's children */
  align-items: center;
  flex-basis: 20%;
  max-width: 20%;
  aspect-ratio: 1;
  flex-flow: column;
}
.mainbutton a {
  display: flex;
  flex-flow: column;
  flex-grow: 1;
  justify-content: center;
  align-items: center;
}
.mainbutton .img-container {
  display: flex;
  justify-content: center;
  flex-grow: 1;
  max-width: 80%;
}
.mainbutton img {
  /* !important because we need to override the default theme */
  box-shadow: none !important;
  object-fit: scale-down;
}
.mainbutton p {
  margin: 0;
  padding: 20px 0;
  color: #346295;
  font-weight: bold;
  text-align: center;
}

/* Style only applied on large screens */
@media(min-width: 40em) {
  .mainbutton p {
    font-size: large;
  }
  .mainbutton .img-container {
    max-width: 50%;
  }
  .mainbutton img {
    max-width: 10em;
  }
}
</style>

<div class="mainbuttons">
    <div class="mainbutton">
        <a href="{{ '/getroot' | relative_url }}">
          <div class="img-container">
            <img src="{{'/assets/images/getroot.svg' | relative_url}}">
          </div>
          <p>Get ROOT</p>
        </a>
    </div>
    <div class="mainbutton">
        <a href="{{ '/learn' | relative_url }}">
          <div class="img-container">
            <img src="{{'/assets/images/start.svg' | relative_url}}">
          </div>
          <p>Learn</p>
        </a>
    </div>
    <div class="mainbutton">
        <a href="/doc/v{% include root_stable_version_short %}">
          <div class="img-container">
            <img src="{{'/assets/images/doc.svg' | relative_url}}">
          </div>
          <p>Reference</p>
        </a>
    </div>
    <div class="mainbutton">
        <a href="https://root-forum.cern.ch">
          <div class="img-container">
            <img src="{{'/assets/images/forum.svg' | relative_url}}">
          </div>
          <p>Forum</p>
        </a>
    </div>
    <div class="mainbutton">
        <a href="{{ '/gallery' | relative_url }}">
          <div class="img-container">
            <img src="{{'/assets/images/gallery.svg' | relative_url}}">
          </div>
          <p>Gallery</p>
        </a>
    </div>
</div>

<br><br>
{% include feature_row id="intro" type="center" %}

{% include feature_row id="feature_row" %}


<table style="width: 100%; margin-top:4px; border-spacing: 0px;">
   <tbody>
      <tr>
         <td style="width:68%; border:1px solid #cedff2; padding:0; background:#f5faff; vertical-align:top">
            <div style="padding:0.1em 0.6em;">
               {% for post in site.posts limit:5 %}
               <font size="4"><b><a href="{{ post.url | relative_url }}">{{ post.title }}</a></b></font> <font size="1">({{post.date | date_to_string}})</font>
               <font size="2">{{ post.excerpt }}</font>
               {% endfor %}
               <b><a href="{{'/blog' | relative_url}}"> More ...</a></b>
            </div>
         </td>
         <td style="border:0px;">
         </td>
         <td style="width:32%; border:1px solid #cedff2; padding:0; background:#f5faff; vertical-align:top;">
            <h1 style="margin:0.3em; background:#cedff2; font-family:inherit; font-weight:bold; border:1px solid #a3bfb1; padding:0.2em 0.4em;">Latest Releases</h1>
            <br>
            <div style="padding:0.1em 0.6em;">
               <font size="2">
               {% include releases_list number=5 single_column="yes" %}
               <br>
               <b><a href="{{'/install/all_releases' | relative_url}}"> More ...</a></b>
               </font>
            </div>
            <br>
         </td>
      </tr>
   </tbody>
</table>