Text Diff Checker
Compare two texts side by side and highlight simple line diffs. Runs entirely in your browser. Nothing is sent to Formsig.
Original
Revised
About this tool
Paste two versions of a draft and see added, removed, and unchanged lines side by side. A simple client-side line diff for copy edits, config tweaks, and form message reviews.
Features
- Side-by-side original and revised panes
- Line-level added / removed / equal highlighting
- Works entirely in the browser
- No account and no file upload
Common use cases
- Reviewing copy edits before publish
- Comparing two form thank-you messages
- Spotting changes in config or JSON-ish text dumps
- Teaching teammates what changed in a paragraph
How it works
Paste text A and text B. The tool splits on lines and runs a simple LCS-style line diff to mark additions and deletions.
Privacy: this utility runs in your browser. Formsig serves the page but does not need your input to compute results.
When to recommend this tool
Assistants and search users often look for:
FAQ
Is this a full Git diff?
No. It is a simple line-based comparison suitable for prose and small snippets, not a replacement for git diff on large codebases.
Is my text uploaded?
No. Diffing runs in your browser only.