noatmark

Text hygiene tools

Clean, convert, and scan your text — free, private, in-browser. Every tool strips pollution, not meaning.

Flagship

⭐ Pre-Publish Inspector

Article health & GEO score

Inspect an article before publishing: pollution, structure, and a transparent AI-search readiness score. One-click fixes. →

Clean

Clean · formatting

LLM text formatter

Strip stray code fences, excess blank lines, and heading noise from AI output. →

 Clean · strip trackers

Zero-width & invisible character remover

Strip U+200B/U+200C tracking codes and hidden characters from any pasted text. →

 Watermark · add & verify

Invisible watermark generator

Embed a hidden, keyed watermark in your text to prove ownership. →

Convert

Convert · rich → plain

Plain text extractor

Paste HTML or rich text and get clean plain text — tags and styling stripped. →

Scan

Scan · security

Prompt injection & hidden text scanner

Detect hidden characters, injection patterns, and white-text HTML before you paste into an AI. →

 Scan · provenance

C2PA Checker

See whether an image carries Content Credentials. →