Zero Width Space
U+200BAB
Zero-width or format character
Invisible Letters — Hidden Characters You Can Copy
Letter-safe Unicode picker
Copy invisible letter characters with verification
Choose a hidden letter-style character, inspect its code point, copy it, and transfer it to the Test Box before using it elsewhere.
Recommended:Start with Zero Width Space for no-width letter tests or Hangul Filler when a field needs a blank-looking unit with presence.
Controls
Output and diagnostics
Selected: NoneCode points: Not generatedUnits: 0Width/type: Not testedVisible chars: 0
Choose a preset, generate or analyze, then copy or transfer to the Test Box.
Hangul Filler
U+3164AㅤB
Blank-looking special character
Zero Width No-Break Space
U+FEFFAB
Zero-width or format character
Zero Width Joiner
U+200DAB
Zero-width or format character
Zero Width Non-Joiner
U+200CAB
Zero-width or format character
Test Box
Characters: 0 —
Invisible Letters
Invisible letters are Unicode characters that can behave like text units while showing no ordinary letter shape. This page focuses on letter-like placeholders, not broad blank text or spacing.
For a general character list, use characters or the invisible character guide. For control-symbol behavior, use invisible symbol.
How to Use
- ✦ Choose a letter-like invisible character.
- ✦ Prepare the selected output.
- ✦ Review its Unicode code point.
- ✦ Paste into the Test Box to confirm it copied.
- ✦ Test the exact destination field before saving.
Letter-Like Character Guidance
Zero Width Space is a no-width text unit. Hangul Filler is blank-looking and may act more like a present character. Zero Width Joiner and Non-Joiner are specialist marks used for joining behavior and should be tested carefully.
Compatibility Notes
Apps may count, remove, normalize, or display invisible letters differently. Search fields, username fields, and display-name fields can treat the same character differently.
Troubleshooting
- ✦ If the character appears as a box, the font may not render it blank.
- ✦ If the app removes it, try Hangul Filler or a visible spacing character.
- ✦ If text direction or joining changes, avoid directional/joiner marks for that field.
- ✦ If a field requires visible text, keep a visible fallback.
Responsible Use
Use invisible letters for formatting and Unicode compatibility checks. Follow platform rules and avoid misleading identity formatting.
FAQ
Are invisible letters real letters?
They are real Unicode characters, but they are not ordinary alphabet letters. They can behave like text units in some fields.
Which invisible character behaves most like a letter?
Hangul Filler often has stronger character presence, while Zero Width Space is better for no-width tests.
Why do some apps reject invisible letters?
The app may require visible text, block zero-width marks, or normalize unsupported Unicode.
Can invisible letters affect search or display?
Yes. Some systems count or index hidden characters differently, so test carefully.