Which character Facebook accepts
None. Facebook rejects every invisible character in the profile name field. Facebook's real-name policy requires a name matching everyday identification, and its validator rejects names with no visible characters. Attempts are auto-reverted and can trigger ID verification on the account, which is a real cost rather than a harmless failure.
How to set it on Facebook
To set blank text on Facebook, copy the character above and paste it into a cleared field. The whole method is one paste — the cost is not applicable to the profile name.
- Copy U+2800 from the tool above.
- Open a post and tap the comment field.
- Paste the character and post — the comment sends and displays as blank.
What it costs on Facebook
Not applicable to the profile name. Nothing is consumed by a failed attempt, so trying a second character costs only the time.
If it does not work on Facebook
Do not keep retrying the profile name. Repeated attempts are what escalate to an ID check. The comment and post fields work normally and carry no such risk.
The field clears itself after saving
Facebook trimmed the value and found an empty string, so it restored the previous one. The character you used has White_Space=Yes. Switch to U+2800 or U+3164, which do not, and the value survives the trim.
A box or question mark appears
The rendering font has no glyph at that codepoint, so the renderer draws.notdef — an empty rectangle in most fonts. The stored value is correct and only the display is wrong. U+3164 carries wider font coverage than most alternatives.
The paste produces nothing on mobile
The keyboard or clipboard manager sanitised the content in transit. Paste into a plain-text notes app first, copy from there, then paste into Facebook. This is the single most common practical failure and it has nothing to do with the character itself.
It works on desktop and fails in the app
The two clients validate separately. A value the desktop site accepts can still be rejected by the mobile client's own check, and the reverse also happens. Set it on whichever client accepts it — the stored value is shared.
Full property data for both characters is on the Unicode invisible characters table.
Is a blank name allowed on Facebook?
Yes. A blank name breaks no Facebook rule. Platform policies restrict impersonation, harassment and filter evasion, not which codepoints a name contains.
Two uses do violate policy on Facebook and on every comparable platform, and neither depends on the name being blank. Copying another user's name to pass as them is impersonation. Splitting a blocked word with a zero-width character to defeat moderation is evasion.
One consideration applies regardless of the rules. Screen readers announce nothing for an invisible character, so NVDA, JAWS and VoiceOver read a fully blank name as unnamed. Keeping one visible character alongside the invisible ones preserves the announcement and still looks almost blank.