Gitcasso – Syntax Highlighting and Draft Recovery for GitHub Comments

In plain words

Gitcasso is a browser extension for GitHub that adds markdown syntax highlighting to comment textboxes and displays a sidebar listing open pull requests, issues, and draft comments. Built for developers who write frequently on GitHub, it helps improve code readability while drafting responses. The extension is open source under Apache 2 license, with optional autosave functionality for draft recovery currently in development.

written from the facts on this page · September 2026

From the sources

Syntax highlighting for the GitHub issue/pr editor. Also, never lose a draft comment again! - diffplug/gitcasso

Syntax highlighting and autosave for comments on GitHub (and other markdown-friendly websites). If there's something you'd like to add or fix, see CONTRIBUTING.md . Syntax highlighting for the GitHub issue/pr editor. Also, never lose a draft commentfrom github.com

In the maker’s words, at launch

I built a browser extension called Gitcasso which: - Adds markdown syntax highlighting to GitHub textareas - Lists every open PR/issue tab and any drafts - (Optional, unimplemented) autosaves your comment drafts so you don’t lose work I made it because I was impressed by https://overtype.dev/ (a…

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