Bitbucket Rich Diffs

About

Reviewing a documentation PR on Bitbucket Cloud is the same experience as reviewing code: a wall of plus and minus signs, line numbers, and raw Markdown syntax. Headings look
  like "## What it does." Tables look like "| col | col |". Bold text shows as **double-asterisks**. Reading prose this way is slow and easy to skim past.

  Bitbucket Rich Diffs adds a small per-file toolbar above every Markdown file in your pull request diffs. One click toggles between three views, and you can mix and match per
  file:

  ORIGINAL DIFF — Bitbucket's default plus / minus view, untouched.

  RENDERED (UNIFIED) — the file rendered as Markdown, in document order, with added blocks tinted green and removed blocks tinted red and struck through. Skim the change like
  you'd skim the published doc.

  RENDERED (SIDE-BY-SIDE) — two columns: Before on the left, After on the right, both fully rendered. Best for visualizing structural changes like added sections or restructured
   tables.

  WHY YOU MIGHT WANT IT
  Reviewing READMEs, RFCs, design docs, ADRs, runbooks, or any prose under version control. Anyone whose Bitbucket PRs include a Markdown file regularly will save time.

  HOW IT WORKS
  The extension uses the Bitbucket session you're already signed in with — no separate authentication, no app password, no tokens. Before/after file content is fetched the same
  way Bitbucket's own UI fetches source files, and rendered locally in your browser using the marked library. Output is sanitized with DOMPurify before display, so a malicious
  Markdown file in a PR can't run script in the page.

  PRIVACY
  Your data does not leave your browser except for the file-content fetches, which go directly to bitbucket.org over the same connection your normal Bitbucket browsing already
  uses. The extension makes no analytics or telemetry calls. There is no account, no settings sync, no third-party service.

  OPEN SOURCE
  Source code, releases, and issue tracking on GitHub:
  https://github.com/thelinuxer/bitbucket-rich-diffs

  Released under the MIT license.

  WHAT'S COMING
  Markdown is the first file format. CSV, JSON, and ODS are on the wishlist.

  And for the Summary field above it (max 132 chars):

  Render Markdown files in Bitbucket Cloud pull-request diffs as proper formatted documents — unified or side-by-side.