Available now
Hidden Unicode and formatting
Literal zero-width characters, direction controls, special spaces, and copy artifacts can be found by exact code point. Supported artifacts can be safely cleaned without rewriting your words.
100% local text analysis
AI Text Watermark
Checker.
Check copied text for hidden Unicode, invisible characters, and formatting artifacts. See exactly what was found and safely clean supported artifacts without changing your words.
No signupNo text storageExact character report
Local-first scanner
See what is hiding in your text.
Detect invisible Unicode, mixed-script lookalikes, display controls, and formatting artifacts without uploading your text.
0 words · 0 characters Not uploaded
Your report will appear here
See every category, exact code point, review priority, and the character locations that need attention.
AI Watermark Checker finds literal hidden characters and formatting. It does not determine who or what authored text, detect every provenance method, or claim to remove statistical or model-level watermarks.
Text watermarks, explained
Two technologies are often called an AI text watermark.
They are not the same, so the checker reports them separately and never turns a formatting result into an authorship claim.
Provider verification required
Statistical model watermarks
Systems such as SynthID can encode a statistical signal in token choices. They are not hidden Unicode and cannot honestly be confirmed or removed by a character cleaner without a provider-specific verifier.
Built for clarity
A scanner you can audit.
01
Transparent findings
Every result names the character type, count, and exact Unicode code point.
02
Private by default
The scanner runs locally in your browser. Your pasted text is not uploaded.
03
Safe cleaning
Remove hidden formatting without paraphrasing, rewriting, or changing the readable message.
Popular text checks
Use the words you already have in mind.
These focused guides all lead to the same private scanner while explaining the exact type of text signal being checked.
Simple pricing
Free for one-off checks. Pro for repeat QA.
Free
$0
For quick checks and everyday cleanup.
- Unlimited local scans
- Copy and download
- Detailed Unicode report
Pro
Best value$6 / month
$72 billed yearly · or $9 monthly
- Batch scan up to 50 files
- Exportable CSV audit reports
- Customer billing portal
Files remain on your device. Cancel or change billing through the customer portal.
Know what your text contains.
No guesswork or authorship accusations. Just a precise character-level report.
Scan text now