Invisible Character Detector
Find and remove hidden zero-width and invisible characters from text.
How to Use the Invisible Character Detector
Paste your text into the input box above and invisible characters are detected instantly. The tool scans for zero-width spaces, byte order marks, soft hyphens and dozens of other hidden Unicode characters that are invisible in most editors.
Detection Results
When invisible characters are found you see a summary of each type and count, a detailed table listing every occurrence with its Unicode code point and position, and a highlighted preview where each invisible character is shown as a colored tag.
Cleaning Your Text
- Clean Text — removes all invisible characters from the input and replaces it with the cleaned version.
- Copy Cleaned Text — copies the cleaned text to your clipboard without modifying the input.
Highlighted Preview
The preview at the bottom shows your text with every invisible character replaced by a colored code-point tag like [U+200B]. Hover over any tag to see the character name.
Frequently Asked Questions
What are invisible characters?
Invisible characters are Unicode code points that take up no visible space when rendered. Common examples include zero-width space (U+200B), zero-width joiner (U+200D), soft hyphen (U+00AD) and the byte order mark (U+FEFF). They are often introduced by copy-pasting from websites, word processors or messaging apps.
Why should I remove invisible characters?
Invisible characters can cause hard-to-debug issues in code, break string comparisons, affect text processing, create unexpected line breaks and increase file size. Removing them ensures your text behaves as expected across all systems.
Does this tool detect all types of invisible characters?
The tool detects over 30 types of invisible Unicode characters including zero-width spaces, directional marks, various Unicode spaces (en space, em space, thin space, hair space), line and paragraph separators, and byte order marks.
Does my text get uploaded anywhere?
No. Everything runs in your browser using JavaScript. Your text never leaves your device.
Can invisible characters affect SEO or web content?
Yes. Invisible characters in URLs, titles, meta descriptions or body text can cause indexing issues, break links and produce unexpected rendering in search results. Cleaning your content before publishing is a good practice.
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