Add an Underline to Text
Underline text with a combining low-line character. Runs entirely in your browser, so your data never leaves your device.
0 chars · 0 lines
Output
The result appears here as you type.
How to use Add an Underline to Text
- 1. Type or paste your text. Enter the word or phrase you want underlined into the input pane.
- 2. Let the tool add the combining marks. There are no settings; the tool inserts a combining low-line character after every letter, producing an underline effect using real Unicode combining marks rather than formatting.
- 3. Copy the underlined text. Copy the underlined text from the output pane and paste it into any plain-text field, since the underline travels with the characters themselves.
When to use Add an Underline to Text
Add an Underline to Text underlines a word or phrase using a combining low-line Unicode character, producing an underline effect anywhere plain text is accepted. Use it wherever rich text formatting isn't available.
- Emphasizing a term in a plain-text bio. You want to underline your job title or a key phrase in a social media bio, but the field doesn't support any text formatting at all. Underline it here first.
- Marking a heading in a plain-text document. You're writing in a plain-text editor with no markdown rendering and want a section heading to visually stand out with an underline instead of all caps.
- Styling a link label in a chat message. You want to underline the clickable-looking part of a message to hint at a link or important reference, in an app that doesn't render rich text.
Examples
Underline
Input
hello
Output
h̲e̲l̲l̲o̲
About the Add an Underline to Text tool
Add an Underline to Text runs as plain JavaScript in your browser tab, with no server behind it. Underline text with a combining low-line character. Whatever you put in stays on your device from start to finish.
The tool is part of EditSafely's Text Tools section, 211 single-purpose utilities built around the same idea: open the page, get the result, keep your data to yourself.
There is nothing to configure. Provide the input and the result appears on its own. A worked example further down the page shows exactly what the tool produces for a real input.
That local-first design has practical benefits beyond privacy. The tool keeps working on a flaky connection once the page has loaded, results are instant because nothing round-trips to a server, and it is safe to use with confidential material.
Frequently asked questions
Is Add an Underline to Text free to use?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Is it safe to paste sensitive or confidential data?
Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.
How much text can I process at once?
There is no fixed limit. Because the work happens on your own device rather than on a shared server, the practical ceiling is your machine's memory, which comfortably handles inputs far larger than typical online tools allow.
Do I need to sign up or install anything?
No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.