Copy the invisible character below to post a blank comment on Instagram, YouTube, TikTok or anywhere else that refuses to accept an empty comment box.
Every comment form runs the same basic check before it will let you post: strip the whitespace, then see whether anything is left. A comment made of ten spaces reduces to an empty string and gets rejected, which is why simply pressing the space bar never works.
Hangul Filler (U+3164) passes that check because Unicode does not consider it whitespace at all. It is categorised as Lo, Other Letter - a placeholder character from Korean text encoding that happens to render as blank. The trimming step leaves it alone, one character survives, and the comment posts.
This is also why Zero Width Space (U+200B) is a worse choice here even though it is genuinely invisible. Several platforms strip zero-width format characters on purpose, because they were widely used to smuggle text past keyword filters. A character classified as a letter does not trip those defences.
| Platform | Best first choice | Fallback |
|---|---|---|
| Instagram comments | Hangul Filler | No-Break Space |
| YouTube comments | Hangul Filler | EM Space |
| TikTok comments | Hangul Filler | No-Break Space |
| Forums and comment plugins | No-Break Space | Hangul Filler |
Not sure what a platform did to your text? Paste it into the invisible character detector to see exactly which characters survived.
Different apps prefer different Unicode characters. Start with these combinations.
Best first choice: Hangul Filler (U+3164). Alternatives: Zero Width Space and No-Break Space.
Best first choice: Hangul Filler. Alternative for tighter formatting: Zero Width Space.
Start with Hangul Filler. If the game rejects it, try Space or No-Break Space.
Use No-Break Space for preventing line breaks, EN Space and EM Space for wider spacing, and Thin Space or Hair Space for finer adjustments. For code-ready values and conversion, see HTML Space Characters.
Because the platform trimmed it. Comment boxes strip whitespace and then check whether anything is left, so a comment made of spaces is treated as empty. Hangul Filler is classified as a letter rather than a space, so nothing is stripped and the comment posts.
Usually. Instagram accepts Hangul Filler in comments more reliably than zero-width characters, which it strips from several fields specifically because they were used to evade moderation. If a blank comment is rejected, try No-Break Space as a fallback.
Often, yes. Both use the same kind of empty-input validation, so an invisible character that survives trimming will generally post. Enforcement varies by platform and changes over time, so test before relying on it.
Yes. Other users see your username and profile picture with no text beside it. The comment is a real comment with a real timestamp - it simply has invisible content.
It is not a technical violation, but some platforms treat repeated empty or invisible comments as spam under their community guidelines. Posting one or two is harmless; posting them in volume risks a rate limit or a strike.
Explore the most useful guides on BlankText.Net for blank messages, Instagram, gaming nicknames, and Unicode spaces.