How to Add a Prefix and Suffix to Every Line
To add a prefix and suffix to every line of text, paste your list into the free ByteTools Add Prefix and Suffix tool, type the text you want at the start and end of each line, and copy the result — every line is wrapped at once, entirely in your browser. There is no need to edit lines one by one, and nothing is uploaded. This guide walks through the whole process and the small options that make it reliable.
This kind of bulk line editing is a daily time-saver for developers, writers and anyone working with lists: turning plain rows into HTML tags, quoted strings, CSV columns or command-line arguments in a single pass.
What the tool does
The Add Prefix and Suffix tool takes a block of text — one item per line — and attaches whatever you specify to the beginning (prefix) and end (suffix) of each line simultaneously. You can add just a prefix, just a suffix, or both. An optional "Skip blank lines" setting leaves empty rows untouched so your spacing stays intact. Everything runs locally in JavaScript, so even sensitive lists never leave your device and the tool works offline.
Step-by-step
- Paste your text. Put your list into the input box, one item per line.
- Enter the prefix. Type the text you want at the start of every line — for example
<li>or a quote mark. - Enter the suffix. Type the text for the end of every line — for example
</li>or a comma. - Decide on blank lines. Enable "Skip blank lines" if you want empty rows left as-is.
- Copy or download. Grab the transformed text from the output — copy to clipboard or download it as a text file.
A worked example
Say you have three names and want an HTML list:
Ana Ben Cara
Set the prefix to <li> and the suffix to </li>, and you instantly get:
<li>Ana</li> <li>Ben</li> <li>Cara</li>
The same approach builds a lot of common formats:
| Prefix | Suffix | Turns a plain list into |
|---|---|---|
| " | ", | Quoted, comma-separated array items |
| - | (empty) | A Markdown bullet list |
| (empty) | , | CSV-style trailing commas |
| https:// | / | Normalized URLs |
The live preview updates as you type, so you can watch the format take shape and adjust before copying.
Why do this in the browser?
Editing lines one at a time is slow and error-prone: on a list of a few hundred rows you will inevitably miss a line or fat-finger a bracket. Wrapping them all in a single pass removes that risk entirely, and because the tool processes text locally, it is a safe choice even when the list contains internal identifiers, customer emails or unreleased data. There is no upload, no account and no server log — the text stays in your tab. Once the page has loaded you can even disconnect from the internet and keep working, which is handy on a locked-down machine or a flaky connection. When you are done, you can either copy the result to the clipboard for an immediate paste or download it as a plain text file to keep or share.
Try the Add Prefix and Suffix to Text tool — free and 100% in your browser.
FAQ
Can I add only a prefix without a suffix?
Yes. Fill in the prefix field and leave the suffix field empty, and only the start of each line changes. The reverse works too for suffix-only edits.
Will the tool touch my blank lines?
Only if you let it. Turn on "Skip blank lines" and empty rows are preserved exactly, which keeps intentional spacing intact.
Do I need to install anything?
No. It runs in your browser with plain JavaScript, so there is nothing to download and it keeps working even without an internet connection.
Is my text sent to a server?
No. All processing happens locally on your device, so even confidential lists stay private.
Related free tools
- Wrap Text in Quotes — quote every line quickly.
- Add Line Numbers to Text — number each line.
- Join Lines — merge lines into one.
- Find and Replace Text — swap text across a block.
Built by ByteVancer
ByteTools is a free product of ByteVancer, a software and web development studio that builds web apps, SaaS and custom software. If your team needs custom text or data tooling built to fit your workflow, explore what ByteVancer can do.
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