Underline text
Underline any text with a combining low line you can paste into chats, bios, and posts.
Text is processed only on this device. Standard limit: 5 MiB; JSON and Base64: 2 MiB.
0 characters · 0 words · 0 lines · 0 sentences
How to use
Paste or type your text, then select Transform. An underline mark is added under every character, including spaces, and the result stays in this browser tab.
Example
Input: “Important”. Output: “I̲m̲p̲o̲r̲t̲a̲n̲t̲”. The line comes from a combining mark placed after each character, so it renders anywhere text does.
Uses
Use underlined text to highlight a key word in a post, mark titles in plain-text messages, or add emphasis where underline formatting does not exist.
Limitations
The underline is a combining character, not formatting, so every character including spaces carries a mark. Some platforms clip the line on descenders like g, j, and p. Screen readers still read the words normally.
Local privacy
Your input and result are processed locally on this device. Convertca does not put tool text in URLs, analytics, or saved histories.
Task-specific guidance
Underline draws the eye hard — reserve it for the one word or short phrase that matters most in the message.
FAQ
Does it work on emoji? Yes. The mark attaches to the whole emoji as one piece, so multi-part emoji stay intact.
Verified examples
- Input
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Important
- Output
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I̲m̲p̲o̲r̲t̲a̲n̲t̲