Review section by section
Every heading becomes a section with its own Viewed mark. Marks survive a refresh in this browser, and a section re-opens when the diff under it changes.
GitHub makes Markdown readable or reviewable.
We make it both.
Review the document, not the raw file. Nothing to install, nothing to sign into, and it works on your phone.
Paste a public GitHub PR
Free on public PRs. No account, no token.
01 / try it live
Turn large Markdown pull requests into a review checklist
AI writes specifications in minutes. Review them without losing your place. Below is the real review component on a prepared change: expand a section, tick it Viewed, read the source and the rendered result side by side. The Pipeline section draws the changed mermaid diagram twice, old and new.
Want a whole pull request? Three prepared demo PRs are open end to end at their own review URLs, nothing asked of you:
02 / keep your place
Stop reviewing a 1,500-line PRD as one file
Source and rendered, together
Paired panes with change markers inside the rendered view. Tables diff per row, and mermaid diagrams show old and new.
Comment on the exact line
Comments composed here post as real GitHub PR review comments. Threads already on the PR show inline at their lines.
No local setup. It runs in the browser you already have, on the laptop and on the phone.
03 / read-only
Read-only, and in your browser
Your browser talks to the GitHub API directly. A personal access token never leaves it except to GitHub, and connecting your account grants read-only access to only the repositories you pick. The one write it ever performs is a review comment you submit yourself. The security page spells out every permission, where each credential goes, and what is stored.
Read the permissions and security page04 / early price
Early founder price, locked for early users
Public PR review is free and needs no account. Private repositories come with a kanzen membership at an early founder price, locked for early users. The number lives on kanzen.sh, where pricing is always current.
See pricing on kanzen.sh ↗05 / your turn
Bring your own pull request
Paste the URL of any public GitHub PR and read the whole review. Sign in only when you want your progress kept.
The app and the extension are optional. The GitHub App is read-only and saves the token step on the repositories you pick. The extension adds Markdown Review buttons to pull requests on GitHub.