Free Text Compare (Diff Checker)
Paste two blocks of text to see exactly what was added, removed, or changed between them.
How to use this tool
Paste your original text into the left box and the changed version into the right box, or use the “Upload file” button to load a plain text file into either box.
The comparison updates automatically. A summary line shows the total lines added and removed, and the diff view below highlights removed lines in red and added lines in green, so you can scan the changes line by line.
This is useful for comparing two drafts of an article, checking what changed between two versions of code or config, or spotting differences between two copies of a document.
FAQ
- How does the text comparison work?
- The tool compares your two texts line by line and highlights lines that were added (green) or removed (red), so you can quickly spot every difference.
- Can I compare uploaded files instead of pasting text?
- Yes. Click 'Upload file' above either text box to load a .txt file directly, then compare as usual.
- What do the added/removed counts mean?
- The summary above the diff shows how many lines exist only in the changed text (added) and how many exist only in the original text (removed).
- Is my text uploaded to a server?
- No. The comparison runs entirely in your browser using JavaScript. Neither text is ever sent anywhere.