URL Diff & Compare
Paste two URLs 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 similar URLs
Example Output
differing URL components
How to Use
- 1Paste the first URLs (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 URL Diff & Compare
URL Diff & Compare parses two URLs into their components — protocol, host, port, path, and each query parameter — then compares them. You immediately see which part differs, not just a raw text difference.
Useful for debugging differences between two links that should be identical, or comparing a canonical URL vs a tracked one.
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.