Text Compare

Click “Open file” on each side, or drop a file onto the box, or paste text. Differences appear straight away, side by side, with changed words highlighted. Files are read in your browser and never uploaded.

Yes. Choose “Ignore trailing spaces” or “Ignore all whitespace”, and tick “Ignore case”. Lines that only differ in those ways are treated as the same, but the original text is still shown.

Usually line endings: Windows uses CRLF and macOS and Linux use LF. “Treat CRLF and LF as the same” is on by default; turn it off to see line-ending differences.

Both sides are parsed and compared value by value, so formatting and spacing don't matter. You get a list of paths that changed — like $.items[2].price — and a line view of both documents neatly formatted. Object key order can be ignored; array order always matters. Invalid JSON is reported with the line and column of the problem.

The standard text format for changes, used by Git and patch tools: lines starting with − were removed and lines starting with + were added, with a few unchanged lines around each change for context. Download it as a .diff file or copy it.

Each side can be up to 5 MB. Comparisons run in a background worker so the page stays responsive, and a long comparison can be canceled.

No. Everything is compared in your browser, nothing is sent to a server, and nothing is saved when you close the page. Exported reports are created on your device.

Not as files. Open file accepts plain-text formats such as .txt, .md, .csv, .json, .xml, .html, .yml, .log and code files. For a Word document, copy the text from Word and paste it into each side. For PDFs, use the Compare PDFs tool, which pulls out the text and highlights the differences.

Yes. Changed lines are highlighted word by word by default; switch Highlight to Characters to mark each changed letter, which helps with typos, numbers and punctuation. Use the arrow buttons to jump from one change to the next, or search both sides at once.

Download an HTML report that opens in any browser with the differences colored in, download a .diff file, or copy the unified diff to paste into an email, ticket or code review. Everything is created on your device.

No. It only compares the two texts you give it and shows where they differ; it doesn't search the web or other documents. It can show how closely a rewrite follows an original you already have, but it doesn't give a similarity score.