Markdown Diff & Compare
Paste two Markdown documents to see highlighted line-by-line differences, a change summary, and a similarity percentage. Everything is processed on your device.
Everything runs in your browser. Your data is never sent to our servers.
Example
Example Input
two README files
Example Output
changed lines highlighted
How to Use
- 1Paste the first Markdown documents (A) in the left box and the second (B) in the right box.
- 2Adjust the options if needed (ignore case, whitespace, or empty lines).
- 3Click Compare (or press Ctrl+Enter).
- 4See the highlighted differences, a summary of how many changes there are, and the similarity percentage. Switch between side-by-side / unified / inline views.
About Markdown Diff & Compare
Markdown Diff & Compare highlights the differences between two Markdown documents line by line. Great for reviewing changes to READMEs, documentation, or notes.
Because Markdown is plain text, all text-diff options (ignore whitespace, case, empty lines) apply.
FAQ
What is the difference between "diff" and "compare"?
Both are done by the same tool. "Diff" highlights the lines/parts that changed (added/removed), while "compare" shows how similar the two inputs are (similarity percentage + summary). You get both at once here.
Is my data sent to a server?
No. The entire comparison is computed in your browser with JavaScript. Nothing is uploaded, logged, or stored on our servers — safe for sensitive data.