Underline Text Generator
Underline any word or phrase with Unicode combining characters and paste it into posts, bios and comments on platforms that have no underline button at all.
Quick answer: Social platforms removed underline from their composers because it looks like a link. This tool sideloads it: a combining low-line character after each letter renders as an underline (l̲i̲k̲e̲ t̲h̲i̲s̲) in any app that displays text.
How to Use the Underline Text Generator
Underlines pull the eye to a phrase without changing the letterforms, useful when bold feels too heavy. The generator adds the underline as Unicode, so it survives pasting anywhere.
Type your text
Enter or paste the words you want to convert into the box above.
Watch it convert
Your text instantly appears in underlined Unicode text. No button to press, no sign-up.
Copy the result
Click Copy next to the version you like best.
Paste it anywhere
Paste into LinkedIn, X, Facebook, Instagram, TikTok, Discord, anywhere that accepts text.
Underlining on Platforms That Do Not Allow It
On the web, underline traditionally means "this is a link", which is why LinkedIn, X and Facebook never shipped an underline button. Used deliberately, though, an underline is a strong highlighter: it marks the takeaway sentence of a post the way a highlighter marks a printed page.
The generator uses U+0332, a combining low line. Like all combining marks its exact position depends on the reader’s font, on most devices it forms a continuous line. Keep underlined runs short and never underline actual links, that reads as broken.
Want all 19 fonts side by side instead? Try the LinkedIn Font Generator, or use the LinkedIn Text Formatter for a full editor with a live post preview.
Skip the Copy-Paste on Social Media
The free Post Formatter Chrome extension puts underline and 30+ other styles right inside the LinkedIn, X, Facebook, Threads and Bluesky composers, select text, click a button, done. Plus drafts, a live post preview, and a character counter.
Add to Chrome, It's Free