Remove AI watermarks from text
Paste your text. We remove hidden characters, then rewrite the word choices that statistical watermarks live in, aiming to keep what it says.
Privacy mode
Private 1× Credits · Plaintext goes through the Simple Unmark app to the cleaning workload.
The app, the ordinary HTTPS and load-balancer path, the Python workload, and DeepInfra all process plaintext. Text and output are not stored in our database or analytics.
Confidential AI is coming soon. Selecting it registers interest only — no text, no credits.
Privacy modes explainedHow it works
Paste. Clean. Copy.
- Step 1
Paste your text
One box, nothing to set up. Your browser scans for hidden characters as you type.
- Step 2
Clean it
Hidden characters are removed. Then the wording is rewritten so the word choices a statistical watermark depends on change.
- Step 3
Copy the result
Check the meaning against your original, then copy it.
Private mode is the default. Switch to Confidential and your browser verifies the cleaning service before encrypting text to it, so our app never receives it. DeepInfra still processes the text for the rewrite, and Confidential cleans use 2× credits.
Compare privacy modesText is rewritten, so review it before use. No tool can guarantee a watermark detector’s verdict.
3 free cleans, then credits from $5
Accounts get 10 starter credits and up to 5,000 words per clean. No subscription. Credits never expire.
FAQ
Common questions
What can I clean?
Pasted text. Simple Unmark removes hidden Unicode characters and rewrites the word choices that statistical watermarks are carried in. The rewrite aims to keep your meaning. It does not clean images, video, audio, or PDFs.
Will my text still sound like me?
The wording changes, but the rewrite aims to keep your meaning, facts, names, and tone. Always review the result before using it. No tool can guarantee a watermark detector's verdict.
Is the hidden-character check free?
Yes, with no limit. The invisible character remover finds and deletes hidden characters in your browser, sends nothing to us, and leaves your wording unchanged. Only the rewrite uses free cleans or credits.
Who can read my text?
In Private mode, our app and processing services handle your text. Confidential mode encrypts it in your browser to a verified, protected service, bypassing our app, and uses 2× credits. Our AI provider, DeepInfra, still reads the text in both modes to do the rewrite. We do not save your submitted text or results in our database or analytics.
Can I try it for free?
Yes. Get 3 free cleans without an account, up to 100 words each. An account adds 10 starter credits and raises the limit to 5,000 words per clean. More credits start at $5. There is no subscription, and credits do not expire.
What is Confidential AI?
A planned mode that is not available yet. It is designed to run the AI rewrite inside a protected environment too, so no external AI provider receives your text. Selecting it in the cleaner registers your interest; it does not submit your text or spend credits.