Markdown PR Comments for GitHub

Tracking since May 20, 2026.

Changelog

• Jun 8, 2026
  description

  GitHub's "Files changed" rich-diff renders Markdown beautifully — design docs, dev plans, READMEs — but provides no way to click on a paragraph and leave a review comment. You have to flip back to source-diff mode to comment, then back again to see how it renders. This extension closes that gap.
  
  What it does:
  
  • Hover any paragraph, heading, list item, table row, or code block in rich-diff and a blue "+" appears. Click it, type a comment, click Comment. The comment posts as a real PR review comment on the correct source line.
  • Drag the "+" from one block to another to leave a multi-line range comment.
  • Existing review threads render inline as "N comments" badges, anchored to the rendered block they belong to. Expand a thread to read, reply, resolve, or unresolve — all without leaving rich-diff.
  • Comment box matches GitHub's UI: Markdown toolbar, Write / Preview tabs, @mention autocomplete, Cmd/Ctrl+Enter to submit.
  • Threads sidebar — a draggable, resizable panel lists every review thread on the page, with prev / next navigation, an "unresolved only" filter, and j / k / h / l keyboard shortcuts. Press `t` to toggle the sidebar, `Shift+T` to reset its position.
  • "Render all Markdown files as rich-diff" in one click — a book icon in the sidebar header opens every .md file in the PR as rich-diff at once, so all comments on Markdown files load without you having to toggle each file by hand.
  • Outline tab — a heading tree of every modified Markdown file with a comment-count pill per section; click to jump, fold individual sections or bulk-fold by level (Fold H1 / H2 / H3 / Expand all).
  • Heading anchor links (Table of Contents) work in rich-diff — clicking `[Section](#section)` scrolls to the heading.
  • Avatars and GitHub-native role badges (Author, Owner, Member, Contributor, First-time contributor, …) on every comment.
  • Collapse sections by heading to focus on what's left to review.
  
  No Personal Access Token required — uses your existing GitHub session cookies. Works on public and private repos. No third-party servers, no telemetry, no analytics.
  
  Best for PRs that include Markdown content — design docs, dev plans, READMEs, and ADRs. The extension activates wherever GitHub's rich-diff view is available; on source-only files (.js, .py, etc.) GitHub's normal source-diff continues to work as it always has.
  
  —
  
  This is an independent, third-party browser extension. It is not affiliated with, endorsed by, sponsored by, or otherwise connected to GitHub, Inc. "GitHub" is a registered trademark of GitHub, Inc., and is used here only to identify the service this extension works with.

  🆕 What's new in v1.4.0 (2026-06-05)
  
  • Editing your own comment is now one click — a direct "Edit" link sits in the comment header next to "GitHub ↗", so you no longer have to open the ⋯ menu first. "Delete" still lives in ⋯ (with a confirm prompt) because it's destructive.
  
  —
  
  GitHub's "Files changed" rich-diff renders Markdown beautifully — design docs, dev plans, READMEs — but provides no way to click on a paragraph and leave a review comment. You have to flip back to source-diff mode to comment, then back again to see how it renders. This extension closes that gap.
  
  What it does:
  
  • Hover any paragraph, heading, list item, table row, or code block in rich-diff and a blue "+" appears. Click it, type a comment, click Comment. The comment posts as a real PR review comment on the correct source line.
  • Drag the "+" from one block to another to leave a multi-line range comment.
  • Existing review threads render inline as "N comments" badges, anchored to the rendered block they belong to. Expand a thread to read, reply, resolve, or unresolve — all without leaving rich-diff.
  • Comment box matches GitHub's UI: Markdown toolbar, Write / Preview tabs, @mention autocomplete, Cmd/Ctrl+Enter to submit.
  • Threads sidebar — a draggable, resizable panel lists every review thread on the page, with prev / next navigation, an "unresolved only" filter, and j / k / h / l keyboard shortcuts. Press `t` to toggle the sidebar, `Shift+T` to reset its position.
  • "Render all Markdown files as rich-diff" in one click — a book icon in the sidebar header opens every .md file in the PR as rich-diff at once, so all comments on Markdown files load without you having to toggle each file by hand.
  • Outline tab — a heading tree of every modified Markdown file with a comment-count pill per section; click to jump, fold individual sections or bulk-fold by level (Fold H1 / H2 / H3 / Expand all).
  • Heading anchor links (Table of Contents) work in rich-diff — clicking `[Section](#section)` scrolls to the heading.
  • Avatars and GitHub-native role badges (Author, Owner, Member, Contributor, First-time contributor, …) on every comment.
  • Collapse sections by heading to focus on what's left to review.
  
  No Personal Access Token required — uses your existing GitHub session cookies. Works on public and private repos. No third-party servers, no telemetry, no analytics.
  
  Best for PRs that include Markdown content — design docs, dev plans, READMEs, and ADRs. The extension activates wherever GitHub's rich-diff view is available; on source-only files (.js, .py, etc.) GitHub's normal source-diff continues to work as it always has.
  
  —
  
  This is an independent, third-party browser extension. It is not affiliated with, endorsed by, sponsored by, or otherwise connected to GitHub, Inc. "GitHub" is a registered trademark of GitHub, Inc., and is used here only to identify the service this extension works with.

• Jun 8, 2026
  name

  Rich Diff Comments for GitHub

  Markdown PR Comments for GitHub

• Jun 2, 2026
  description

  GitHub's "Files changed" rich-diff renders Markdown beautifully — design docs, dev plans, READMEs — but provides no way to click on a paragraph and leave a review comment. You have to flip back to source-diff mode to comment, then back again to see how it renders. This extension closes that gap.
  
  What it does:
  
  • Hover any paragraph, heading, list item, table row, or code block in rich-diff and a blue "+" appears. Click it, type a comment, click Comment. The comment posts as a real PR review comment on the correct source line.
  • Drag the "+" from one block to another to leave a multi-line range comment.
  • Existing review threads render inline as "💬 N comments" badges, anchored to the rendered block they belong to. Expand a thread to read, reply, resolve, or unresolve — all without leaving rich-diff.
  • Comment box matches GitHub's UI: Markdown toolbar, Write / Preview tabs, @mention autocomplete, Cmd/Ctrl+Enter to submit.
  • Collapse sections by heading to focus on what's left to review.
  
  No Personal Access Token required — uses your existing GitHub session cookies. Works on public and private repos. No third-party servers, no telemetry, no analytics.
  
  Best for PRs that include Markdown content — design docs, dev plans, READMEs, and ADRs. The extension activates wherever GitHub's rich-diff view is available; on source-only files (.js, .py, etc.) GitHub's normal source-diff continues to work as it always has.
  
  —
  
  This is an independent, third-party browser extension. It is not affiliated with, endorsed by, sponsored by, or otherwise connected to GitHub, Inc. "GitHub" is a registered trademark of GitHub, Inc., and is used here only to identify the service this extension works with.

  GitHub's "Files changed" rich-diff renders Markdown beautifully — design docs, dev plans, READMEs — but provides no way to click on a paragraph and leave a review comment. You have to flip back to source-diff mode to comment, then back again to see how it renders. This extension closes that gap.
  
  What it does:
  
  • Hover any paragraph, heading, list item, table row, or code block in rich-diff and a blue "+" appears. Click it, type a comment, click Comment. The comment posts as a real PR review comment on the correct source line.
  • Drag the "+" from one block to another to leave a multi-line range comment.
  • Existing review threads render inline as "N comments" badges, anchored to the rendered block they belong to. Expand a thread to read, reply, resolve, or unresolve — all without leaving rich-diff.
  • Comment box matches GitHub's UI: Markdown toolbar, Write / Preview tabs, @mention autocomplete, Cmd/Ctrl+Enter to submit.
  • Threads sidebar — a draggable, resizable panel lists every review thread on the page, with prev / next navigation, an "unresolved only" filter, and j / k / h / l keyboard shortcuts. Press `t` to toggle the sidebar, `Shift+T` to reset its position.
  • "Render all Markdown files as rich-diff" in one click — a book icon in the sidebar header opens every .md file in the PR as rich-diff at once, so all comments on Markdown files load without you having to toggle each file by hand.
  • Outline tab — a heading tree of every modified Markdown file with a comment-count pill per section; click to jump, fold individual sections or bulk-fold by level (Fold H1 / H2 / H3 / Expand all).
  • Heading anchor links (Table of Contents) work in rich-diff — clicking `[Section](#section)` scrolls to the heading.
  • Avatars and GitHub-native role badges (Author, Owner, Member, Contributor, First-time contributor, …) on every comment.
  • Collapse sections by heading to focus on what's left to review.
  
  No Personal Access Token required — uses your existing GitHub session cookies. Works on public and private repos. No third-party servers, no telemetry, no analytics.
  
  Best for PRs that include Markdown content — design docs, dev plans, READMEs, and ADRs. The extension activates wherever GitHub's rich-diff view is available; on source-only files (.js, .py, etc.) GitHub's normal source-diff continues to work as it always has.
  
  —
  
  This is an independent, third-party browser extension. It is not affiliated with, endorsed by, sponsored by, or otherwise connected to GitHub, Inc. "GitHub" is a registered trademark of GitHub, Inc., and is used here only to identify the service this extension works with.

Permissions & access

Permissions

None declared

Host access

https://github.com/*

Screenshots