Hangul Filler
U+3164Blank-looking special character
Chat box Unicode tester
Prepare a short sample for ongoing chat fields, group chats, DMs, or server channels where rendering and rules can differ.
U+3164Blank-looking special character
U+00A0Visible spacing character
U+200BZero-width or format character
U+2003Visible spacing character
Use this page to test how a chat app handles invisible Unicode inside ongoing conversations, group chats, DMs, or server channels.
Chat text is different from a single message because chat apps may apply server rules, rate limits, moderation settings, and client-specific rendering. For one-off message testing, use invisible message text. For SMS-style blank bubbles, use blank text message.
Hangul Filler is useful when a chat field needs a blank-looking unit with presence. No-Break Space is better for spacing near visible text. Zero Width Space is useful for no-width tests but may be removed by chat systems.
Discord, Messenger, Telegram, WhatsApp, Slack-style apps, and game chats can normalize or reject invisible Unicode. Group and server rules may be stricter than private chats.
Use invisible chat text for harmless formatting and Unicode testing. Avoid spam, flooding, harassment, evasion, or disruptive chat behavior.