Zero Width Character Remover cleans form inputs in client-side script: ZWNJ, ZWSP, and hidden Unicode spaces never need a server round trip.
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
Understand how U+200B, ZWNJ, and invisible delimiters are detected and purged from text strings.
Sure! Here’s a summary — **Key points** - First item > Note: important
Sure! Here's a summary — Key points • First item Note: important
Why
Zero Width Character Remover cleans form inputs in client-side script: ZWNJ, ZWSP, and hidden Unicode spaces never need a server round trip.
Non-printing characters including U+200B (Zero-Width Space), U+200C (ZWNJ), U+200D (ZWJ), and U+FEFF (BOM). These are deterministic Unicode bytes that can be identified and deleted locally in your browser without altering visible characters.
Algorithmic token selection and repetitive transition patterns produced by generative AI models. Eliminating zero-width characters has no effect on statistical token distributions; modifying statistical phrasing requires full-sentence semantic rewriting.
Invisible-character and Markdown cleaning run locally in your browser. We don’t store Free-tool text.
How
Paste your code snippet, draft, or dataset into the workspace. The browser tool instantly scans for U+200B and 60 related zero-width Unicode characters.
Review the detected zero-width code points highlighted across your text. Click Clean to delete every zero-width character instantly without sending data to any external server.
Copy your sanitized text string for database ingestion, code development, or publishing. If your draft also requires stylistic restructuring, you can optionally 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
Web forms fail validation when a zero-width non-joiner rides along with an email, a name, or a coupon code. This lander is that form-input cleaner.
Execution is private and client-side for the free pass. You are not uploading form data to list ZWSP.
Clearing zero-width characters does not remove Claude’s official sampling watermark. Free scan cannot. Forms almost never need that layer.
Paste the field value, strip, paste back. If your QA file still fails, check NBSP next—not a probability meter.
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 the field value, strip, paste back. If your QA file still fails, check NBSP next—not a probability meter.
Open the tool →
Execution is private and client-side for the free pass. You are not uploading form data to list ZWSP.
Open the tool →
Invisible zero-width non-joiners, ZWSP, and related hidden Unicode spaces, processed in the browser.
Open the tool →
You can paste a value to inspect. Prefer not putting secrets into any web tool if policy forbids it; the free path still does not upload.
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.
Locate and remove U+200B zero-width spaces, ZWNJ, ZWJ, and invisible delimiters from text locally in your browser.
Zero-Width Space Remover →Scan and purge 60 invisible Unicode code points, zero-width spaces, and non-printing control characters directly in your browser.
Remove Hidden Characters →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 →Pricing
Scanning and deleting zero-width spaces is always free in your browser, with Pro rewrite credits available on our pricing page.
See pricingZero-Width Space Remover removes non-printing Unicode bytes like U+200B deterministically in your local browser. However, deleting zero-width spaces does not modify visible words, bypass third-party AI detectors like Turnitin or GPTZero, or remove statistical model watermarks. In addition, this tool is built for pasted text and does not accept uploaded binary documents like Word (.docx) or Pages files.
FAQ
Invisible zero-width non-joiners, ZWSP, and related hidden Unicode spaces, processed in the browser.
Not for the free strip. That script runs entirely client-side.
Only the hidden-character class. Wrong emails and empty required fields are ordinary validation.
No. It is not a probability score and not an authorship oracle.
Same family, “character” wording for form inputs rather than draft-centric language.
You can paste a value to inspect. Prefer not putting secrets into any web tool if policy forbids it; the free path still does not upload.
About us
Paste the field value, strip, paste back. If your QA file still fails, check NBSP next—not a probability meter.
Zero Width Character Remover cleans form inputs in client-side script: ZWNJ, ZWSP, and hidden Unicode spaces never need a server round trip.