Invisible Characters Remover sanitizes raw copy in the browser so code comments and drafts are not carrying hidden Unicode marks into review.
These code points show up most often in AI chat pastes, docs, and web copy. The full scan covers 60 characters; this table is the short list.
| Code | Name | Why it breaks pastes |
|---|---|---|
| U+200B | Zero Width Space | Invisible separator; breaks word counts, search and URLs. Common AI/copy artifact. |
| U+200C | Zero Width Non-Joiner | Invisible; controls ligature joining. Often unintended residue. |
| U+200D | Zero Width Joiner | Invisible; joins glyphs/emoji. Can be watermark residue in plain text. |
| U+FEFF | Zero Width No-Break Space (BOM) | Byte order mark / invisible; corrupts leading text and parsing. |
| U+00A0 | No-Break Space | Looks like a space but blocks line breaks; breaks search matching. |
| U+202F | Narrow No-Break Space (NNBSP) | The main 'ChatGPT o3/o4-mini' artifact. Looks like a space, different code point. |
| U+00AD | Soft Hyphen | Invisible unless line wraps; splits words for search. |
| U+202E | Right-To-Left Override | Bidi override; strong spoofing risk. |
The live scanner still checks the full set of 60 code points, including bidi controls and variation selectors.
See it in action
Learn how hidden non-printing code points enter copied text and how client-side cleaning restores clean plain text.
Sure! Here’s a summary — **Key points** - First item > Note: important
Sure! Here's a summary — Key points • First item Note: important
Why
Invisible Characters Remover sanitizes raw copy in the browser so code comments and drafts are not carrying hidden Unicode marks into review.
Physical non-printing characters such as zero-width spaces (U+200B), directional marks, and U+202F narrow spaces injected during copy-paste. These deterministic artifacts are stripped instantly and for free directly in your browser.
Underlying sentence structures, formulaic transitions, and token probability distributions generated by AI models. Removing invisible characters does not change wording; modifying sentence cadence requires semantic rewriting through our Pro engine.
Invisible-character and Markdown cleaning run locally in your browser. We don’t store Free-tool text.
How
Paste your text from any AI chat interface, document, or code editor into the workspace. The tool scans immediately for 60 invisible Unicode code points.
Click Clean to purge all zero-width spaces, U+202F narrow spaces, and hidden control marks for free in your browser with zero latency.
Copy your sanitized text for publishing, coding, or CMS entry. If your draft also requires stylistic polish or vocabulary restructuring, send it to our Pro rewrite engine.
Features
Detects zero-width spaces, NNBSP, BOM, directional marks and 60+ other invisible code points without rewriting your words.
Strip headings, lists, quotes, and emphasis markers into plain text ready for CMS and editorial review.
Pro rewrite regenerates meaning-preserving text when a watermark is baked into wording — not just hidden Unicode.
Rewrite AI flavor into more natural cadence. No tool can guarantee detector bypass; results vary.
Definition
The extra “s” in the URL is the search. The tab is still the free invisible cleaner: hidden marks, separators, and control characters, locally.
Sanitized text here means the visible words you intended, without non-printing code points. It does not mean a rewritten essay or a detector pass.
Stripping these marks does not remove Claude’s official sampling watermark. Free scan cannot do that. It also will not “beat” Turnitin.
Paste comments, commit messages, and draft emails. If a linter screams about a character you cannot see, this is the pass.
Sources
Hidden Unicode, Markdown residue, and Claude’s official statistical watermark are three mechanisms. This page cites the public specs; it does not claim detector bypass.
| Mechanism | What it is | What this site does |
|---|---|---|
| Invisible Unicode | Zero-width and format code points (including U+200B and U+202F) that can ride along in a paste. | Free local scan and delete. Does not rewrite sentences. |
| Markdown / rich-text residue | Hashes, fences, emphasis markers, and copied rich-text spacing. | Free local strip to plain text. |
| Statistical wording watermark | A sampling pattern in word choice. Official Claude text watermarks add no hidden characters. | Pro meaning-preserving rewrite. Not a detector score, not a guarantee. |
“Nothing is added to the text and there are no hidden characters.”
“U+200B ZERO WIDTH SPACE is intended for line break control without displaying a visible space.”
Markdown tokens follow the CommonMark specification: CommonMark spec.
Use cases
Paste comments, commit messages, and draft emails. If a linter screams about a character you cannot see, this is the pass.
Open the tool →
Sanitized text here means the visible words you intended, without non-printing code points. It does not mean a rewritten essay or a detector pass.
Open the tool →
The local scanner covers 60 invisible Unicode code points, including zero-width separators and common control characters in pastes.
Open the tool →
No. This is not a probability score. It lists residue.
Open the tool →Testimonials
“The free scan lists the code points. I clean the paste in the browser, then only use Pro if the wording itself needs a rewrite.”
Content ops
SEO & CMS
“Markdown from chat was breaking our editor. Stripping hashes and fences locally is the whole job — no file upload.”
Editorial
Publishing
“Hidden Unicode broke string equality in a parser. Character cleanup first; sentence rewrite is a different layer.”
Engineering
Docs & support
Tools
Dedicated landing pages for the searches people actually type.
Strip 60 invisible Unicode characters, zero-width spaces, narrow non-breaking spaces, and hidden control marks from pasted text 100% locally in your browser.
Invisible Character Remover →Scan and purge 60 invisible Unicode code points, zero-width spaces, and non-printing control characters directly in your browser.
Remove Hidden Characters →Locate and remove U+200B zero-width spaces, ZWNJ, ZWJ, and invisible delimiters from text locally in your browser.
Zero-Width Space Remover →Pricing
Stripping invisible characters is always 100% free in your browser, with Pro rewrite credits available for semantic restructuring.
See pricingThe invisible character remover operates deterministically on 60 physical Unicode code points. However, removing hidden characters does not alter statistical word choice, bypass third-party AI detectors like Turnitin or GPTZero, or remove Anthropic's statistical sampling watermark. We provide transparent, honest utilities with zero misleading bypass claims.
FAQ
The local scanner covers 60 invisible Unicode code points, including zero-width separators and common control characters in pastes.
Markdown tokens are a different tab. This page is non-printing Unicode. Run both if the paste has both.
No. Official sampling watermarks are not these characters. Free scan cannot remove them.
The free pass stays in the browser. Do not send comments through Pro rewrite if they must remain private.
You can. This page is a named inventory plus one-click strip for people who do not want to maintain a code-point list.
No. This is not a probability score. It lists residue.
About us
Paste comments, commit messages, and draft emails. If a linter screams about a character you cannot see, this is the pass.
Invisible Characters Remover sanitizes raw copy in the browser so code comments and drafts are not carrying hidden Unicode marks into review.