AI Text Cleaner Online — Free Browser-Based Hidden Character Remover
Nothing to install, nothing to sign up for. Open the page, paste, clean, copy.
Hidden character report
Paste text to scan
What online means here
The page is served over the web. The cleaning is not. Once the page has loaded, the engine that does the work is running on your machine, as ordinary JavaScript, with no connection back to us.
That distinction matters because the usual advice for cleaning sensitive text is to use a local tool. This page gives you the local behaviour without the local installation: there is no binary to download, no dependency to manage, and no version to keep up to date.
Nothing to install, nothing to sign up for
There is no account, no email address, no quota and no paywall. Open the page and the tool is already there. Close the tab and nothing is left behind on your device.
That is a deliberate design choice rather than a limitation. Anything that requires an account requires storing something about you, and this tool has no reason to store anything at all.
Works on phones and tablets
The layout adapts down to narrow screens, with the two text boxes stacked and the action buttons pinned to the bottom of the screen so they stay reachable while you scroll. The character reference table scrolls sideways instead of forcing the page wider.
This is the case people hit most often in practice: copying an answer on a phone and pasting it into a notes app or a message, where an invisible character is much harder to spot and much more annoying to remove by hand.
Privacy by architecture, not by promise
Most privacy policies ask you to trust a promise. This one does not have to. There is no server component in this tool — the site is a set of static files, and the cleaning is a function call inside the page. There is nowhere for your text to go.
You do not have to take that on faith either. Open your browser's network panel, paste something distinctive, and press Clean. No request carries your text, because no request is made at all.
Characters this tool looks for
25 invisible characters and formatting controls, with the action taken on each one.
| Character | Code point | Action | What it does |
|---|---|---|---|
| Zero-width characters | |||
| Zero Width Space | U+200B | Removed | Invisible separator with no width. Commonly left behind when text is copied out of a chat window. |
| Zero Width Non-Joiner | U+200C | Removed | Invisible character that blocks two letters from joining in scripts such as Arabic or Devanagari. |
| Zero Width Joiner | U+200D | Removed | Invisible character used to glue emoji sequences together. Stray copies can break word wrapping. |
| Zero Width No-Break Space (BOM) | U+FEFF | Removed | Byte order mark. Harmless at the start of a file, invisible noise anywhere else. |
| Word Joiner | U+2060 | Removed | Tells a text engine not to break a line here. Invisible, and easy to carry along by accident. |
| Mongolian Vowel Separator | U+180E | Removed | A legacy invisible separator from Mongolian script that now renders as nothing at all. |
| Bidirectional controls | |||
| Left-to-Right Mark | U+200E | Removed | Directional hint for mixed-script lines. Invisible on screen but present in the character stream. |
| Right-to-Left Mark | U+200F | Removed | Mirror of the left-to-right mark, used to steer the order of mixed-direction text. |
| Arabic Letter Mark | U+061C | Removed | Invisible directional marker for Arabic text. Rarely intentional outside its original document. |
| Left-to-Right Embedding | U+202A | Removed | Opens an embedded left-to-right run. Unpaired copies can scramble the order of a sentence. |
| Right-to-Left Embedding | U+202B | Removed | Opens an embedded right-to-left run. Left behind after copy-paste, it can flip nearby punctuation. |
| Pop Directional Formatting | U+202C | Removed | Closes an embedded directional run. Without its partner it is pure invisible noise. |
| Left-to-Right Override | U+202D | Removed | Forces following characters to display left-to-right regardless of their own direction. |
| Right-to-Left Override | U+202E | Removed | Forces following characters to display right-to-left. A common cause of text that looks reversed. |
| Left-to-Right Isolate | U+2066 | Removed | Modern replacement for the embedding controls. Still invisible, still travels with copied text. |
| Right-to-Left Isolate | U+2067 | Removed | Isolates a right-to-left run from the surrounding paragraph direction. |
| First Strong Isolate | U+2068 | Removed | Isolates a run whose direction is decided by its first strong character. |
| Pop Directional Isolate | U+2069 | Removed | Closes an isolate opened by one of the isolate controls above. |
| Formatting controls | |||
| Soft Hyphen | U+00AD | Removed | A hyphen the reader only sees if the word happens to break at the end of a line. |
| Carriage Return (CR) | U+000D | Removed | Half of a Windows line ending. Kept on its own it produces doubled spacing in most editors. |
| Markdown Asterisk Marker | U+002A | Removed | Bold or italic marker such as ** left behind when text is copied in its raw form. Turn this group off to keep Markdown styling marks. |
| Markdown Backtick Marker | U+0060 | Removed | Inline-code backtick left behind after copying raw assistant output. Turn this group off to keep inline code marks. |
| Invisible spaces | |||
| No-Break Space | U+00A0 | → space | Looks exactly like a space but stops a line from breaking there. A frequent copy-paste leftover. |
| Figure Space | U+2007 | → space | A space as wide as a digit, used to align numbers in tables. Replaced with a normal space. |
| Narrow No-Break Space | U+202F | → space | A thin, non-breaking space from French typography. Replaced with a normal space. |
Frequently Asked Questions
▸Do I need an account?
No. There is no sign-up, no login and no email field anywhere on this site. The tool is fully usable the moment the page loads, and nothing about your visit is tied to an identity.
▸Does it work offline?
Once the page has loaded, the cleaning engine runs locally, so the tool keeps working if your connection drops mid-session. Loading the page itself still needs a connection the first time, as with any website.
▸Is there a file size limit?
No. Paste as much text as the box will hold. Very large inputs — around a hundred thousand characters — are processed the same way, with a short note in the report area explaining the extra moment it takes.