NoMark

Clean hidden Unicode from ChatGPT, Claude and Gemini text, then remove EXIF, XMP and C2PA metadata from AI images.

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Overview

Remove hidden Unicode and AI text watermarks from ChatGPT, Claude and Gemini. Strip EXIF, XMP and C2PA image metadata free in your browser.

AI summary

NoMark is a web-based tool designed to clean hidden Unicode and AI text watermarks from text generated by models like ChatGPT, Claude, and Gemini. It also removes EXIF, XMP, and C2PA metadata from images, providing a private and account-free experience for users.

Who Is It For

Best for

Individuals or organizations seeking to remove AI-generated text watermarks and image metadata without needing to create an account.

–Not for

Users looking for a comprehensive solution that includes visible watermark removal or advanced image editing capabilities.

Strengths & Weaknesses

Biggest strength

Offers a straightforward, browser-based approach to cleaning AI text and image metadata without requiring sign-up.

Biggest weakness

Limited to specific types of watermarks and metadata; does not address robust watermarks encoded into image pixels (AI-inferred; may be outdated – founders can correct this)

Classification

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How we sourced this: Observed fields () were crawled from https://nomark.me/ and are stated as fact. AI-inferred fields () were generated by gpt-4o-mini and are always labelled – never presented as measured fact. Last updated: 18 August 2026. Is this your tool? Claim it to edit and get a do-follow badge.