Free, open source, runs in your browser

Animate every highlight. Share every step.

CodeReel turns your code into short, polished walkthroughs. Stage line highlights, morph between steps, and export images or videos ready for docs, talks and social posts.

Syntax highlighting for the languages you ship

  • JavaScript
  • TypeScript
  • React
  • Vue
  • Python
  • Shell
  • Markdown
  • Rust
  • Go
  • C++
  • HTML
  • CSS

Everything you need to tell a story with code

Highlight steps

Stage each step and guide viewers through the flow.

Customize

Tune themes, fonts, spacing, and backgrounds to fit your brand.

Instant preview

Play the sequence and refine timing without leaving the editor.

Start from a look you like

Hover a card to watch it play, then open it in the editor with your own code.

From snippet to walkthrough in three steps

  1. 1

    Paste your code

    Drop in a snippet in any of the supported languages and split it into steps.

  2. 2

    Stage the highlights

    Pick the lines each step should spotlight and watch the code morph between them.

  3. 3

    Export and share

    Save a crisp PNG, JPEG or WebP, or export the whole animation as an MP4.

Your next code walkthrough starts here

No sign-up, no upload. Everything runs locally in your browser.

Get started