edittxt

Comparison

Text Diff Checker

Compare two pieces of text and see every added and removed word or line, highlighted side by side.

Original

Changed

Differences
Paste text into both panes to see what changed.

Your text is processed on your device and never uploaded anywhere.

See exactly what changed

A colleague “made a few small edits.” A client returned the contract “mostly unchanged.” ChatGPT rewrote your paragraph and you want to know what it actually touched. Reading two versions side by side and spotting differences by eye is unreliable at any length — a diff makes every change explicit.

Paste the original on the left and the new version on the right: additions appear green, deletions red with strikethrough, in context rather than as a cryptic patch file. Switch to line mode for code and data.

Frequently asked questions

Should I compare by words or by lines?
By words for prose — it pinpoints edits inside sentences. By lines for code, config files, CSV data, or lists, where the meaningful unit is the whole line.
Is it safe to paste contracts or confidential drafts?
The comparison runs entirely in your browser using the open-source jsdiff algorithm; neither version is uploaded anywhere. That's a real difference from diff sites that process text server-side.
Can it show which version a change came from?
Green highlights are text that exists only in the changed (right) version; red strikethrough is text that exists only in the original (left). Unhighlighted text is identical in both.
Does it catch invisible changes?
Yes — changed whitespace or invisible Unicode characters register as differences even when both texts look identical. If a diff looks empty but isn't, run both versions through the invisible character remover to see what's hiding.

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