tidyoutput.
← All tools

Invisible Character Remover

Paste any text to see every hidden Unicode character highlighted in place, with a count of what was found. Copy the cleaned version with one click.

Text to inspect

Everything runs in your browser. Your text is never uploaded or stored.

X-ray view0 hidden characters
Hidden characters will be highlighted here.

What invisible characters are

Unicode includes dozens of characters that render as nothing: zero-width spaces, joiners, directional marks, byte order marks, and exotic space variants. They arrive in text through copy and paste from websites, PDFs, chat apps, and AI tools, and they survive every ordinary edit because you cannot see them to delete them.

The damage they cause

  • Code that looks correct but fails to compile or compare equal.
  • Usernames, passwords, and API keys that get rejected or silently mismatch.
  • Search and replace that cannot find text you can clearly see.
  • Spreadsheet lookups and joins that fail on visually identical keys.
  • Watermark-style tracking: some services insert zero-width or tag characters to fingerprint where a text came from.

How the X-ray view works

The tool scans every character against a list of invisible and format-control code points. Each hit is shown as a red chip with its Unicode number, such as U+200B for a zero-width space, exactly where it sits in your text. Cleaning removes the truly invisible characters and converts non-breaking and exotic spaces into a normal space, so word spacing is preserved.

Frequently asked questions

Which characters does it detect?

Zero-width spaces and joiners, word joiners, byte order marks, soft hyphens, directional marks and overrides, variation selectors, Unicode tag characters, and the full family of non-standard space characters including the non-breaking space.

Are non-breaking spaces deleted?

No, they are converted to a regular space so your word spacing stays intact. Characters that are truly invisible, such as zero-width spaces, are removed entirely.

Can invisible characters really be used as watermarks?

Yes. Because zero-width characters survive copy and paste, a pattern of them can encode information inside a text without changing how it looks. Removing them strips that layer.

Will it change my visible text?

No. Only characters from the invisible list are touched. Every visible letter, digit, punctuation mark, and emoji stays exactly as it was.

Is anything uploaded?

No. Detection and removal run in your browser. The text never leaves your device.

More tools