Independent writing tools and guides, edited by a human

Text Diff Checker

Compare two versions of a text at word level. See additions, deletions, and unchanged runs in order, plus a summary of how much changed. Both texts stay in your browser.

Your workbench
0 characters
Stays on your device
Ready when you are.
On this page (04)
  1. 01See exactly what changed between two drafts
  2. 02How to use this workbench
  3. 03Frequently asked questions
  4. 04Make the next edit count

See exactly what changed between two drafts

Paste the earlier text on the left and the revision on the right. The comparison works word by word, ignores case, and marks additions with “+” and removals with “−”. Unchanged words stay in reading order. It compares words, not meaning: a moved paragraph can look like a long removal followed by a long addition. Very long drafts are capped at 700 words per side.

How to use this workbench

  1. Paste your text or load the example.
  2. Paste the reference text into the second field.
  3. Read the result, then copy it or download a text file. Your input stays available until you clear it or leave the page.

Frequently asked questions

Does my text leave my browser?

No. Processing happens in a local browser worker. The tool makes no request containing your draft.

Can I upload a document?

Use Import .txt to read a UTF-8 plain-text file locally. Word documents and PDFs are not supported. Copy their text into the input instead. Each field accepts up to 200,000 characters.

Will the result replace my original?

No transformation automatically overwrites your input. Check the output before copying it. Grammar and spelling suggestions change the input only when you choose to apply them.

Make the next edit count

Read the result in context. If the text needs another pass, try the word counter, text cleaner, or readability checker.