PasteGuard is a lightweight, browser-based toolkit for verifying text authenticity. It layers three fast scans:

• AI Detection – an on-device RoBERTa model scores the likelihood that content was machine-generated.
• Rule Engine – pattern-matching catches tell-tale phrasing, repetitions, and formalism common to AI outputs.
• Unicode Sweep – exposes zero-width, look-alike, or soft-hyphen characters that can break code or hide attacks.

Editors, educators, and developers gain instant, private hints about any pasted text.

Perfoms as well as ZeroGPT and QuillBot - which means very poorly - but without sending your data to a third party.