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Chạy trong trình duyệt · Không tải lên

Hiện tại công cụ này và hướng dẫn trên trang vẫn bằng tiếng Anh. Nó hoạt động y như vậy: mọi thứ chạy trong trình duyệt của bạn.

Clean text

  • Không có gì rời khỏi thiết bị của bạn
  • Máy chủ không giới hạn kích thước
  • Không đăng ký, không hình mờ
  • Miễn phí

How to remove invisible characters

  1. Paste your text.
  2. See which hidden characters were found and where (each one is shown as a small code in the text).
  3. Untick any you want to keep, then copy or download the clean text.

What it finds

  • Zero-width spaces, joiners and non-joiners, word joiners, byte order marks and soft hyphens.
  • Direction marks and overrides (left-to-right, right-to-left), which can make text display in a misleading order.
  • Non-breaking, thin, narrow, figure and other unusual spaces, which become normal spaces.
  • Tag characters (U+E0000 to U+E007F), which can hide whole messages inside normal-looking text.
  • Control characters, Hangul fillers, the Braille blank and other characters that look like nothing.

Emoji stay whole

Some emoji are made of several characters joined by invisible ones (👨‍👩‍👧, ❤️). Those joiners and variation selectors are kept by default, so emoji don't fall apart.

Why invisible characters cause trouble

They break searches and comparisons (two words that look the same don't match), make code fail, add stray spaces in spreadsheets, and can carry hidden text into AI prompts. Text copied from websites, PDFs, chat apps and AI assistants often contains some.

Câu hỏi thường gặp

Do AI tools hide watermarks in text?

Text from AI assistants sometimes contains unusual spaces or invisible characters, though usually by accident. This tool finds them all, whatever their source.

Is my text uploaded?

No. Everything happens in your browser.