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Available now / Documents & files

Text Comparison Tool

Compare two text inputs line by line, review changes, and save the result as an HTML file. Text is processed in your browser.

Run it in your browser

Free · no sign-up · files stay on your device

Everything runs in your current browser. Selected files and text are not sent to our servers. Some tools download a small engine the first time you run them.

Launch the tool

How to use it

  1. Paste the original and revised text.
  2. Review the unchanged, added, and removed lines.
  3. Copy the revision or save the comparison as an HTML file.

Frequently asked questions

What does the comparison check?

The current version compares changes by line.

Is my text stored?

No. Comparison runs in your browser.

Can I compare files?

The current version compares two text inputs pasted into the fields.

How much text can I compare?

Each side supports up to 512 KB of UTF-8 text and 1,000 lines.