Add List Suffix - Append Suffix to Each List Item Online

What is the Add List Suffix Tool?

The Add List Suffix tool appends a custom suffix to every item in your list. Whether you need to add a file extension, temperature unit, punctuation mark, or any other trailing text, this tool makes it quick and easy to apply it across all list items.

How to Use the Add List Suffix Tool

Enter your list - Paste or type your list items in the input area
Set your suffix - Type the text to append after each item (e.g., °F, .txt, !)
Choose separator mode - Use literal characters or regex for splitting
Configure options - Trim whitespace or remove empty items if needed
Get your output - The suffixed list appears instantly

Common Use Cases

Add file extensions (.txt, .csv, .jpg) to filename lists
Append measurement units ( °F, cm, kg) to data values
Add punctuation marks (., !, ?) to sentence lists
Attach closing delimiters or tags to each list entry

Frequently Asked Questions

Can I add different suffixes to different items?

This tool adds the same suffix to every item. If you need different suffixes for different items, you can process the list in batches with different suffix settings.

Does the tool support regex for input separation?

Yes! You can switch to regex mode and use a regular expression to match complex or variable delimiters between list items.

Is my data safe?

Yes. All processing is done entirely in your browser using JavaScript. Your data never leaves your computer.