Normalize exact characters
Replace unusual spaces, remove invisible carriers and preserve meaningful script marks.
Free · private · no sign-up
Remove hidden AI watermarks from text and images.
Clean invisible Unicode from ChatGPT, Claude, Gemini and other AI text in your browser. Use a fast edge rewrite for statistical token patterns, and strip image metadata on-device.
NO/01 — TEXT WATERMARKPaste text, then use one button to remove hidden Unicode and rewrite statistical token patterns.
Ready for one-click removalOne click cleans Unicode glyphs and rewrites the full text.
NO/STAT
Statistical token patterns
A browser-side view of writing regularity and phrase distribution.
Heuristic view
Original
Sentence rhythm—Phrase reuse—Vocabulary reuse—
Watermark removed
Sentence rhythm—Phrase reuse—Vocabulary reuse—
Pattern change—of adjacent token sequences changed
This is a surface-pattern comparison, not proof of authorship or a model-specific watermark detector.
NO/02 — METHOD
Remove hidden traces in three steps.
Rewrite token patterns fast
Use Cloudflare's fast edge model only when you click — with no model download.
Protect facts and review
Numbers, links, emails, quotes and code are locked. Sections that fail checks stay unchanged.
NO/03 — WATERMARK GUIDE
One free AI watermark remover for text and image metadata.
NoMark combines an AI text watermark remover, invisible character checker and AI image metadata remover in one private web app. There is no sign-up, and the exact scanner shows what changed before you copy or download the result.
ChatGPT, Claude & Gemini watermark remover
Clean pasted AI text from supported hidden characters, suspicious formatting and statistical token patterns while preserving visible meaning and protected facts.
Invisible Unicode & zero-width character remover
Find zero-width spaces, word joiners, Unicode tags, bidirectional controls and mixed-script lookalikes with an inspectable character report.
AI metadata, EXIF & C2PA remover
Strip common EXIF, GPS, XMP, IPTC and C2PA Content Credentials from JPEG, PNG and WebP images through local browser processing.
FREQUENTLY ASKED QUESTIONS
What NoMark removes — and what it does not.
How do I remove hidden watermarks from ChatGPT, Claude or Gemini text?
Paste the text into NoMark, review the character report, then choose Remove AI watermark. NoMark removes supported invisible Unicode and can optionally rewrite statistical token patterns while protecting facts such as numbers, links, email addresses, quotes and code.
Is NoMark an AI text watermark detector?
NoMark detects exact hidden Unicode, zero-width characters, directional controls and mixed-script lookalikes. Those findings are not proof of AI authorship. Statistical text watermarks cannot be confirmed by scanning Unicode alone.
Can NoMark remove C2PA Content Credentials and EXIF data from an AI image?
NoMark rebuilds JPEG, PNG and WebP images in your browser to remove common file metadata including EXIF, GPS, XMP, IPTC and C2PA containers. It does not remove visible logos or robust watermarks encoded into image pixels, such as SynthID-style signals.
Is this AI watermark remover free and private?
Yes. NoMark is free and requires no account. Exact Unicode scanning and image processing happen on your device. The optional text rewrite runs only after you click the removal button and uses a fast edge model.