Clean Paste is a free online tool that removes invisible characters, hidden metadata, and AI watermarks from text instantly, with no sign-up or usage limits.
What is Clean Paste?
Clean Paste is a web-based text cleaner that strips invisible characters—including zero-width spaces, hidden metadata, and AI watermarks—from any pasted text. Input your content, click clean, and receive a purified version free of undetectable artifacts. The tool runs entirely in the browser with no file uploads or account creation required, and its output can be copied directly for use in essays, blog posts, or emails. Over 480,000 users have used the service.
Key Features
- Instant processing — Paste your text and click a single button; cleaning completes in under 10 seconds with real-time character and word counts.
- Deep invisible character detection — Scans for zero-width spaces, hidden formatting, and other non-visible Unicode characters that typical editors miss.
- AI watermark removal — Strips proprietary markers embedded by AI writing tools to help content pass detection tests without altering visible text.
- No limits or paywalls — The entire feature set is free: no word caps, no usage quotas, no prompts to upgrade, and no registration required.
- Auto-paste mode — Optionally enable automatic pasting to trigger cleaning immediately when content enters the input area.
- Two cleaning actions — Use the “Remove AI Watermarks” button for watermark-specific cleaning, or “Clear All” to strip every hidden element at once.
Who is it for?
- Students — Remove invisible characters from AI-assisted essay drafts to submit clean, undetectable work. Clean My Essay for Free
- Content creators and bloggers — Humanize AI-generated drafts by stripping watermarks and metadata, preserving a natural voice. Humanize My Content for Free
- Non-native English speakers — Clean emails and documents drafted with AI assistance to avoid detection and sound more authentic.
- SEO specialists and freelance writers — Ensure client-facing copy passes AI detection tools by removing hidden formatting before publication.
What can you do with Clean Paste?
- Clean AI-generated essays — Paste your draft, click “Remove AI Watermarks,” and get a version that passed tests with three different AI detectors (user-verified in testimonials).
- Remove hidden metadata from copied content — Strip zero-width spaces and formatting artifacts that can alter document rendering or flag plagiarism checkers.
- Prepare text for submission or publication — Ensure no invisible characters remain before pasting into CMS platforms, email clients, or academic portals.
How does it work?
Paste your text into the input box, then click either “Remove AI Watermarks” or “Clear All.” The tool scans the entire string, identifies all invisible Unicode characters and embedded watermarks, and removes them in real time. The cleaned text appears in the output box ready for copying.
Pricing
Clean Paste is 100% free to use with no sign-up, no premium tiers, and no usage limits. All features—including watermark removal, deep character scanning, and auto-paste—are available at no cost.
FAQ
Is Clean Paste truly free?
Yes, it is completely free. There are no hidden fees, trial periods, or paid plans. The tool does not require registration and imposes no word or usage limits.
What types of hidden characters does Clean Paste remove?
It removes zero-width spaces, hidden metadata, AI watermarks, and other invisible Unicode characters. Every feature is available without charge.
Will Clean Paste make my AI-written text undetectable?
Users report that text processed with Clean Paste passes tests from three different AI detectors. The tool strips detection markers while preserving the original visible content.
