Markdown Diff
Compare two Markdown documents and visualize differences. Supports line, word, and character-level diffs plus unified patch format. Powered by the diff npm library.
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What is Markdown Diff?
Markdown Diff compares two Markdown documents and highlights what changed between them. Use it to review README updates, changelog edits, docs pull requests, and content revisions. The tool supports line-level, word-level, and unified patch views so you can inspect changes at the right level of detail.
How does Markdown Diff work?
This tool takes an original Markdown document and a modified version, then runs a browser-side diff to identify additions, removals, and changed text. Optional Markdown stripping lets you compare rendered content while ignoring syntax-only formatting changes.
Key Features
- Line, word, and unified patch diff modes
- Optional Markdown stripping before comparison
- Added and removed change counts
- Color-coded diff output
- Copy diff to clipboard
- Download as text file
- Browser-based comparison
- Real-time comparison
Common Use Cases
Reviewing documentation changes
Compare two versions of a Markdown document to see what was added or modified.
Reviewing pull requests
Diff Markdown files from a pull request to review documentation updates.
Tracking README changes
Compare README versions to see what changed between releases.
Auditing content updates
Diff two Markdown drafts to verify all requested changes were made.
How to Use This Tool
Paste both documents
Paste the original Markdown on one side and the modified Markdown on the other.
Choose diff mode
Select line, word, or unified patch mode.
View the diff
The tool shows differences with color coding.
Pro Tips
- 1
Enable Markdown stripping to ignore formatting changes and focus on content.
- 2
Line diff is the most readable for documentation reviews.
- 3
Unified patch mode produces output similar to git diff.
- 4
Compare README files across git tags to generate changelog entries.
Frequently Asked Questions
Can I ignore formatting changes?
Yes. Enable the 'strip Markdown' option to remove formatting syntax before comparing. This focuses the diff on content changes only.
Is my content sent to a server?
No. Both documents are compared in your browser.
What diff modes are available?
Markdown diff supports line diff, word diff, and unified patch output.
Can I save the diff?
Yes. Copy the diff to clipboard or download it as a text file.
Does it handle large documents?
Yes. The tool handles documents of any length that fit in browser memory.