Invisible character

Which invisible character should I use?

There is no single ‘blank’ character in Unicode. There are dozens of characters that draw nothing, and they behave differently because they were designed for different jobs — spacing in typesetting, joining letters in Arabic and Hindi, padding in Korean text encoding, or marking byte order in files. That history decides whether an app keeps them.

• U+3164 Hangul Filler is the best general-purpose choice. It is a letter-like character from the Hangul Compatibility Jamo block; most apps draw it as a full-width gap, although web browsers often give it no width because Unicode marks it ‘default ignorable’. Because Unicode does not classify it as whitespace, the usual ‘trim the spaces’ code leaves it alone. It is the usual pick for blank WhatsApp messages and invisible names.
• U+2800 Braille Pattern Blank is a Braille cell with no dots raised. It is visible to software as a symbol, so it survives almost everywhere, which makes it ideal for blank lines in Instagram and TikTok bios. Some game fonts have no Braille glyphs and draw a box instead.
• U+200B Zero Width Space and its relatives (U+200C, U+200D, U+2060, U+FEFF) take up no space at all. They are useful for breaking up links, stopping auto-formatting or filling empty fields in bot embeds, but they are also the first thing moderation filters remove — a message made of a lone zero-width space is usually rejected as empty.
• U+00A0 No-Break Space, U+2003 Em Space and the other typographic spaces look like ordinary spaces of various widths. They are whitespace, so they are trimmed from the ends of names and messages, but they are handy in the middle of text where you want a gap that will not collapse or wrap.

Each card above measures the character with the fonts on your own device. A card that says draws a glyph here means your system shows a box or shape for that character, so other people on similar devices will see one too.

Invisible names and blank messages, app by app

The Pick your app panel copies a ready-made string for each field. The single most important rule: a display name is not a username. Instagram, TikTok, Discord, Telegram, Snapchat, X and Roblox all have a second, unique handle (the @username) that only accepts letters, numbers and one or two symbols. No invisible character will ever get into those; the blank goes in the display name, nickname or bio.

We have not tested these on our own accounts, and every pick is labelled accordingly. Name changes are rate-limited or cost in-game currency on several of these platforms, so paste into the test box first and read what arrived before you commit.

Why apps strip some blank characters

When a blank character ‘doesn’t work’, one of three pieces of code has almost always removed it. The badges on every card test those three steps live in your browser, so you can predict what will happen before you paste.

That is why the Hangul Filler and the Braille blank are so reliable: they pass all three. Games go further and validate names against their own rules, and those rules differ: Fortnite (Epic) needs at least three characters and many recent reports say all-blank names fail; PUBG Mobile and Free Fire players usually need two or three Hangul Fillers to pass the minimum length; Steam profile names generally accept them; Roblox filters display names and reportedly rejects all-invisible ones. Some apps also reject a message or name that contains only invisible characters while accepting one with a single visible letter — the picker offers a blank + visible option for exactly that case.

Finding hidden characters in text

Invisible characters cause real problems when they turn up uninvited: a password that ‘is definitely right’ but has a zero-width space pasted in from a chat, a spreadsheet lookup that fails because a cell ends in a no-break space copied from a web page, source code that will not compile because of a byte-order mark, or AI-detector and plagiarism tools tripping on text with watermark characters. Paste the text into the detector and every hidden character is shown as a coloured tag with its short name — ZWSP, NBSP, BOM and so on. Click a tag for the full name and code point.

Red tags are bidirectional controls such as U+202E Right-to-Left Override. They can make text display in a different order from how it is stored, which is how the ‘Trojan Source’ attack hides malicious code in plain sight, so treat them with suspicion in anything you are about to run.

Copy cleaned text removes zero-width and format characters and converts unusual spaces to ordinary ones. It keeps the joiners that emoji like 👩‍💻 and flags like 🏴󠁧󠁢󠁳󠁣󠁴󠁿 need, and the ZWNJ/ZWJ that Persian and Indian scripts use inside words, unless you untick Keep emoji joiners. Line breaks and tabs are always preserved. If you only want to count what is left, the character counter shows characters, graphemes and bytes side by side.

Tips, limits and etiquette

• Character limits still apply. A blank counts towards limits like any other character. X weights U+3164 and U+2800 as two of its 280, while U+200B counts as one; the generator shows the X weight as you change the count.
• Copying on phones. iOS and Android sometimes show an empty clipboard preview for invisible text; the copy still worked. Paste into the test box to be sure.
• Screen readers. Most read an invisible name as nothing at all or as ‘blank’, and some announce the character name. Give people another way to identify you where it matters.
• Moderation. Using blanks to impersonate someone, dodge a ban or hide links breaks most platforms’ rules and can get an account suspended.
• Styled text instead? If you want text that looks unusual rather than absent, try the cursed text generator, or see how characters are stored with the text to binary converter.

Frequently asked questions