Try the scanner

Paste text below to see what Paste Guard would find and what the masked version looks like.

Runs in your browser. Nothing is uploaded. Open DevTools, then the Network tab, and watch it stay empty while you paste. Checks you can run on the extension itself are in Verify it yourself.

Prefer a guided walk-through? Try the interactive tour or watch the 90-second tutorial.

The example is made-up data. Large pastes are scanned in chunks, and the marked view shows only the start of very long text. The masked text is always complete. This is a safety net, not a guarantee: it matches common patterns and can miss unusual ones.