Markdown
Markdown Diff Checker
Compare two Markdown documents line by line and see what changed.
How it works
- 1Paste the original on the left.
- 2Paste the changed version on the right.
- 3Read the +/- line diff.
Use cases
- Review edits before committing.
- See what a teammate changed.
- Compare two drafts.
Frequently asked questions
How does the diff work?
It uses a longest-common-subsequence algorithm to align lines, then marks additions with + and removals with -.
Does it diff words?
It works at the line level, which is ideal for Markdown documents and prose.
Is it private?
Yes. Both documents are compared entirely in your browser; nothing is uploaded.
Read the guide
How to compare two Markdown documents
See exactly what changed between two versions of a Markdown file — added and removed lines, side by side — without needing Git or a code editor.
Related tools
See all →Markdown Editor
A fast, free online Markdown editor with live side-by-side preview.
Live Markdown Preview
Paste Markdown and see it rendered live, side by side, as you edit.
Split View Markdown Editor
A two-pane Markdown editor with the source and live preview side by side.
Fullscreen Markdown Editor
An immersive, full-window Markdown editor with live preview.