Zero Width Space
U+200BAB
- Behavior
- Zero-width
- Use
- Adds a real Unicode character without creating visible horizontal width.
- Note
- Good for testing, but some fields trim or normalize it.
Empty Character — Copy & Paste Blank Characters
Field presence check
Show that an empty-looking field contains a character
Copy one character, transfer it to the Test Box, and confirm that the field can look empty while still containing Unicode text.
Recommended:Use Zero Width Space for the clearest empty-looking field demonstration.
Best choices
Choose a character or preset to copy and test.
Field presence check
Selected: NoneCode point: Not copiedUnits: 0Width: Not tested
The field can look blank while the count confirms underlying content exists.
Hangul Filler
U+3164AㅤB
- Behavior
- Visible-width blank
- Use
- Useful when a real character should look blank but still have presence.
- Note
- Some apps preserve it; others may remove it or show a box.
Zero Width No-Break Space
U+FEFFAB
- Behavior
- Zero-width
- Use
- Useful for compatibility testing, not a first-choice blank message character.
- Note
- Also known as BOM in some contexts; apps may remove it.
No-Break Space
U+00A0A B
- Behavior
- Visible spacing
- Use
- Creates a space that keeps neighboring text together in many contexts.
- Note
- May be converted to a normal space by some apps.
Test Box
Characters: 0 —
What Is an Empty Character?
An empty character is a real Unicode character that can make a text field look empty while the field still contains data. The key idea is presence: the character may be invisible to the eye, but it can still be counted, copied, pasted, selected, or removed by software.
If you want a single blank-looking character, compare this page with blank character. If you want the visible result across a message or field, see empty text or the invisible character guide.
Empty Character vs Empty Field
An empty field has no characters. A field with an empty character can look empty while still containing one Unicode code point. This distinction matters when testing forms, bios, captions, usernames, and message fields.
Best Character for This Use Case
- ✦ Zero Width Space (U+200B): Good for checking whether a field preserves zero-width content.
- ✦ Hangul Filler (U+3164): Useful for blank-looking field tests where supported.
- ✦ Braille Pattern Blank (U+2800): Useful when the blank area should occupy visible width.
How to Test an Empty Character
- ✦ Copy one character from the grid above.
- ✦ Paste it into the Test Box.
- ✦ Confirm that the field looks blank but the character count changes.
- ✦ Paste it into the target field and save or preview.
- ✦ If the app removes it, the field may not allow invisible Unicode characters.
Troubleshooting and Safe Use
If the character disappears, the app may trim or normalize it. If it shows as a square, the font may not support a blank rendering. Use empty characters for formatting, Unicode testing, layout checks, and compatibility checking. Do not use them for spam, impersonation, harassment, evasion, or misleading behavior.
FAQ
What is an empty character?
An empty character is a real Unicode character that may make a field look empty while still being present in the text data.
How can a field look empty but contain a character?
Some Unicode characters render with no visible mark. The field can look blank while the character count or software still detects content.
How do I test an empty character?
Paste it into the Test Box and check whether the character count changes while the box looks blank.
Why was my empty character removed?
The app may trim, normalize, block, or remove invisible Unicode characters, especially in fields that require visible text.
What should I avoid?
Do not use empty characters for spam, impersonation, harassment, evasion, or misleading behavior. Use them for formatting and compatibility testing.