{"slug": "show-hn-remove-ai-watermark-from-text", "title": "Show HN: Remove AI Watermark from Text", "summary": "NoMark, a free private web app, removes AI text watermarks by cleaning invisible Unicode characters and optionally rewriting statistical token patterns, while also stripping image metadata such as EXIF, GPS, XMP, IPTC, and C2PA from JPEG, PNG, and WebP images entirely in the browser. The tool, which requires no sign-up, preserves numbers, links, emails, quotes, and code, and explicitly states that its surface-pattern comparison is not proof of authorship or a model-specific watermark detector.", "body_md": "### Normalize exact characters\n\nReplace unusual spaces, remove invisible carriers and preserve meaningful script marks.\n\nClean 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.\n\nA browser-side view of writing regularity and phrase distribution.\n\nThis is a surface-pattern comparison, not proof of authorship or a model-specific watermark detector.\n\nReplace unusual spaces, remove invisible carriers and preserve meaningful script marks.\n\nUse Cloudflare's fast edge model only when you click — with no model download.\n\nNumbers, links, emails, quotes and code are locked. Sections that fail checks stay unchanged.\n\nNoMark 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.\n\nClean pasted AI text from supported hidden characters, suspicious formatting and statistical token patterns while preserving visible meaning and protected facts.\n\nFind zero-width spaces, word joiners, Unicode tags, bidirectional controls and mixed-script lookalikes with an inspectable character report.\n\nStrip common EXIF, GPS, XMP, IPTC and C2PA Content Credentials from JPEG, PNG and WebP images through local browser processing.\n\nPaste 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.\n\nNoMark 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.\n\nNoMark 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.\n\nYes. 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.", "url": "https://wpnews.pro/news/show-hn-remove-ai-watermark-from-text", "canonical_source": "https://nomark.me/#text-watermark", "published_at": "2026-08-12 21:38:20+00:00", "updated_at": "2026-08-12 22:11:01.430371+00:00", "lang": "en", "topics": ["ai-tools", "ai-ethics"], "entities": ["NoMark", "ChatGPT", "Claude", "Gemini", "Cloudflare", "SynthID"], "alternates": {"html": "https://wpnews.pro/news/show-hn-remove-ai-watermark-from-text", "markdown": "https://wpnews.pro/news/show-hn-remove-ai-watermark-from-text.md", "text": "https://wpnews.pro/news/show-hn-remove-ai-watermark-from-text.txt", "jsonld": "https://wpnews.pro/news/show-hn-remove-ai-watermark-from-text.jsonld"}}