Find and remove hidden characters breaking your code, forms, and databases. Secure, fast, and 100% client-side.
A Unicode Cleaner helps detect and remove hidden characters like zero-width spaces (U+200B), non-breaking spaces (U+00A0), byte order marks (U+FEFF), and other invisible Unicode characters.
Zero-width characters are invisible but can cause syntax errors, validation failures, and unexpected bugs in your application environments.
Yes. Unicode Cleaner runs entirely in your browser. No text is uploaded, stored, or processed on external servers.
Learn how invisible Unicode characters cause JSON.parse errors.
Understand U+200B and why it silently breaks applications.
Technical comparison of ASCII and Unicode encoding.
Complete guide to invisible Unicode characters.
Why U+00A0 and U+0020 look identical but behave differently.
Fix common JSON.parse errors caused by hidden characters.
Fix JSON.parse errors caused by the UTF-8 Byte Order Mark.
Developer reference for invisible Unicode characters that cause bugs in code and JSON.
Learn how to remove invisible U+200B characters that break code and JSON.
Learn how hidden Unicode characters break JSON, APIs, and code.
Developers often encounter invisible Unicode characters when copying code from editors, documentation, or AI tools. Unicode Cleaner helps detect and remove characters such as zero width spaces (U+200B), non-breaking spaces (U+00A0), and byte order marks (U+FEFF).