Does PasteDiff upload my text?

No. Diffing runs entirely in your browser. Your pastes are never uploaded for processing.

Is there a character or paste limit?

PasteDiff is free forever with no account and no Pro paywall. Diff size is limited only by your browser memory.

Can I ignore whitespace?

Yes. Turn on Ignore whitespace to normalize spaces and blank lines before comparing.

PasteDiff ink · never upload

Compare

Side-by-side compare · runs in your browser

Text compare & diff checker

Paste Original and Changed. Unlimited online diff in your browser — no account, no upload, no Pro ceiling.

Runs in your browser · files never upload session: idle · 0 uploads

Ignore whitespace

Original

0 lines

Changed

0 lines

Diff

+0 −0 =0

Compare to see a unified editorial diff.

How to verify no upload

Open DevTools → Network.
Paste text and click Compare.
Confirm no POST of your pastes — only static assets load.

Sample fills local textareas only. Nothing is sent to a cloud diff API.

How it works

PasteDiff is an editorial compare desk: two tall paste columns for Original and Changed, then a unified (or split) diff ribbon with restrained add/delete wash and optional word-level highlights.

Everything stays on your device. Free forever — no account, no Pro, no ads, no paste ceiling from us.

Text compareSide-by-side paste desk Diff checkerUnified & split views Compare textIgnore whitespace option Online diffDownload .diff locally No-upload guideNetwork proof checklist

FAQ

Do my pastes leave my device?

No. Diffing runs in your browser with a local library. We do not operate a cloud diff API for your text.

Is there a Pro limit?

No. PasteDiff is free forever, no account, no paid plans. Size is limited only by your browser.

Can I download the diff?

Yes. Copy the unified diff or download a .diff / .txt file from your machine.