{"id":116162,"date":"2026-11-10T11:03:58","date_gmt":"2026-11-10T11:03:58","guid":{"rendered":"https:\/\/mailrelay.com\/glossary\/invisible-text\/"},"modified":"2026-11-11T11:05:09","modified_gmt":"2026-11-11T11:05:09","slug":"invisible-text","status":"publish","type":"glossary","link":"https:\/\/mailrelay.com\/en\/glossary\/invisible-text\/","title":{"rendered":"Invisible text"},"content":{"rendered":"\n

Invisible text<\/strong> is a character that the system counts as text but that doesn’t show on screen.<\/p>\n\n

It looks like an empty gap. To the app, though, something is written there.<\/p>\n\n

That’s why it works where you can’t leave a field blank: a “nameless” name on WhatsApp<\/a>, a message that looks empty or a line break on Instagram.<\/p>\n\n

And it has a lesser-known use in email: padding the preheader<\/a> so the body of the message doesn’t sneak into the inbox<\/a>.<\/p>\n\n

How does invisible text work?<\/h2>\n\n

Cada letra, n\u00famero o s\u00edmbolo<\/a> tiene un c\u00f3digo en Unicode, el est\u00e1ndar que usan m\u00f3viles y ordenadores para mostrar texto.<\/p>\n\n

Some of those codes don’t draw anything. They are special spaces, fillers or joining marks between letters.<\/p>\n\n

The normal space on your keyboard doesn’t work for this. Many apps trim it at the beginning and end, or don’t accept a field that contains only spaces.<\/p>\n\n

A character like the Hangul filler (U+3164) doesn’t get trimmed. The system treats it not as a space but as a letter with nothing drawn.<\/p>\n\n

Don’t confuse it with whitespace<\/a> in design. That’s the breathing room you leave around the elements of a page or an email.<\/p>\n\n

Invisible text is a specific character that you copy and paste.<\/p>\n\n

Invisible text to copy and paste<\/h2>\n\n

These are the most commonly used blank characters.<\/p>\n\n

To copy one, select only the gap between the brackets<\/strong> and paste it wherever you need it. On a computer, double-clicking inside is usually enough.<\/p>\n\n

Character<\/th>Code<\/th>Where it works best<\/th>Copy it<\/th><\/tr><\/thead>
Hangul filler<\/td>U+3164<\/td>Names on WhatsApp, Free Fire and games<\/td>[\u3164]<\/td><\/tr>
Braille blank<\/td>U+2800<\/td>WhatsApp messages, line breaks on Instagram<\/td>[\u2800]<\/td><\/tr>
Zero-width space<\/td>U+200B<\/td>Separating words unnoticed, breaking long links<\/td>[\u200b]<\/td><\/tr>
Non-breaking space<\/td>U+00A0<\/td>Keeping two words from being split across lines<\/td>[ ]<\/td><\/tr>
Zero-width non-joiner<\/td>U+200C<\/td>Preheader padding in emails (\u200c)<\/td>[\u200c]<\/td><\/tr>
Figure space<\/td>U+2007<\/td>Aligning numbers in text tables<\/td>[\u2007]<\/td><\/tr><\/tbody><\/table><\/figure>\n\n

As you can see, they don’t all do the same job. The zero-width<\/strong> ones take up no space: they’re for joining or separating text, not for “writing” an empty name.<\/p>\n\n

For a blank name or message, you need a character with width, like the Hangul filler or the braille blank.<\/p>\n\n

\"Infographic<\/figure>\n\n
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Control what’s read next to your subject line<\/strong><\/p>\n\n\n\n

With Mailrelay, you write your own preview text and send up to 80,000 emails a month for free, with human support on every plan.<\/p>\n\n\n\n

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Create a free account<\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n

Which one to use on WhatsApp, Instagram or Free Fire?<\/h2>\n\n

Each app filters characters in its own way. What works today may stop working after an update. These are the most common combinations:<\/p>\n\n