Add Prefix or Suffix Online

Add text before or after every value in your list, all at once.

100% private. Everything runs in your browser. Your data never leaves your device.

Add Prefix / Suffix

What does this tool do?

This tool adds text before (prefix) and/or after (suffix) every line in your list at once. Great for adding units, currency symbols, URLs, or codes in bulk. Runs in your browser.

How to use Add Prefix / Suffix - Free Online Tool

  1. Paste your values (one per line), or click "Try with sample data".
  2. Enter a prefix, a suffix, or both.
  3. Click Apply.
  4. Copy or download the result.

Example

Adding a URL prefix:

Before

Slug
page-one
page-two

After

URL
https://site.com/page-one
https://site.com/page-two

The prefix is added to every value at once.

Excel formula alternative

Prefer a formula? You can achieve a similar result with concatenation:

="prefix" & A2 & "suffix"

Excel needs a formula per cell. This tool applies the prefix/suffix to the whole list instantly.

When should I use this tool?

Turning slugs into full URLs
Adding units like kg or % to numbers
Prefixing IDs with a code
Wrapping values in quotes or brackets
Adding a currency symbol
Building file names in bulk

Frequently Asked Questions

Yes. Fill in either or both fields and they are applied together.

No. Everything runs in your browser.

Yes, empty lines are ignored so you do not get stray prefixes.

Yes, copy it or download as a file.

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