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Suffix Adder

Append the same suffix to the end of every line, with a live preview and one click copy.

Add a suffix to every line

Type or paste text to add a suffix.
The suffix is added locally in your browser and nothing is uploaded.

How to use the Suffix Adder

  1. Paste the lines you want to change.
  2. Type the suffix to append to the end of every line.
  3. Check the live preview and copy the suffixed text.

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Frequently Asked Questions

Common questions about the free online suffix adder.

Paste your text, type the suffix you want, and each line gets it appended at the end with a live preview as you type.
Yes. Type a semicolon in the suffix box and every non empty line ends with it, which is handy for code and data files.
Yes. Keep Skip empty lines ticked and blank lines are left alone rather than gaining a trailing suffix.
Yes. Existing trailing spaces stay in place and the suffix is added after them, so trim your text first if that matters.
Yes. The Copy button places the whole suffixed text on your clipboard so you can paste it into any editor.
Yes. The tool processes every line as plain text and keeps working on documents with many thousands of lines.
No. Everything happens in your browser, so your text is never uploaded, stored or shared with anyone.
Clear the suffix box and the preview returns to your original text, since the input box is never modified.

Last updated: October 10, 2026