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Underline Text Generator

Generate underlined text with Unicode combining characters, so the underline is part of the text you paste into posts and bios.

What this tool does

Generate underlined text with Unicode combining characters, so the underline is part of the text you paste into posts and bios. You fill in these fields: Text. It shows underlined text.

Inputs

  • Text: Longer text, up to 5000 characters. Every character, including spaces, gets the line. Line breaks are left alone.

How to use

  1. Type the text.
  2. Read the result: underlined text. It appears once every required field has a valid value.
  3. Use the copy button to copy the text.

Where this comes from

Draw a line through or under text. One Unicode combining mark is placed after each visible character: U+0336 for a line through it, U+0332 for a line under it. Spaces and tabs get the mark. Line breaks do not. Source: The Unicode Standard: Combining Diacritical Marks (U+0336 combining long stroke overlay, U+0332 combining low line), and Unicode Standard Annex 29 on what counts as one visible character.

Limitations

  • The line is drawn by the app that shows the text, so it may look offset, uneven or be missing in some apps and fonts.
  • Screen readers may read the marks out, add pauses or skip them, so avoid it for text that must be accessible.
  • The result holds one extra hidden character, the mark, for every visible character. That counts against character limits and stops the text matching a search for the plain words.
  • The marked text is not turned back into plain text here, so keep your original.
  • Text longer than 5,000 characters is not accepted.

FAQs

Q: Why does the line look different in some apps?
A: The line is a Unicode combining character, so each app and font draws it. Its position and thickness vary. Check the result where you will post it.
Q: Can I paste it into a social media bio or a message?
A: Usually yes, because it is plain text, not formatting. A site that strips unusual characters will show the text without the line.
Q: Are spaces and line breaks marked too?
A: Spaces and tabs get the mark so the line is continuous. Line breaks are left alone, so each line of text is marked on its own.
Q: Does it work on accented letters and emoji?
A: Each visible character gets one mark, so an accented letter or an emoji made of several parts is never split apart.
Q: Why use this instead of formatting?
A: Bios and posts on many sites accept only plain text. The underline here is made of a Unicode combining character, so it travels with the text when you paste it.

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