Add Prefix to Text Lines

Prepend prefixes, append suffixes, or insert automated sequential line numbers to multi-line text. Zero server uploads, custom padding, and live client-side preview.

Private • In-browser processing • Zero server uploads

Interactive workspace loading...

How to Use Add Prefix to Text Lines

1
Paste Your Lines
Enter or paste your text list into the input workspace.
2
Set Prefix or Suffix
Type desired prefix or suffix text, or toggle automated line numbering.
3
Copy Result
Instantly copy the formatted output lines to your clipboard.

Key Features

Prefix & Suffix
Prepend and append custom text strings to every line simultaneously.
Automated Line Numbering
Add sequential digits with configurable start indexes and zero padding.
Skip Empty Lines
Avoid adding bullets or numbers to blank spacing lines.
100% In-Browser
Fast processing directly on your device with complete data privacy.

Common Use Cases

  • Formatting raw text lists into Markdown bullet points, blockquotes, or checklists.
  • Wrapping database values with single quotes and commas for SQL 'IN (...)' queries.
  • Prepending sequential line numbers for code walkthroughs or legal documents.
  • Adding HTML tags (e.g. <li> and </li>) around raw plain-text items.

Frequently Asked Questions

Yes! Enable 'Add Line Numbers' and select '3 Digits' in the Zero Padding dropdown.

By default, 'Skip empty lines' is turned on so blank lines remain clean. You can toggle this off if you need prefixes on every line.

No, all transformations run entirely inside your local browser memory.

Find and Replace Text
Find all occurrences of a string or regex and replace them in bulk.
Reverse Text
Reverse any text by characters, words or lines — instant live preview.
Sort a List
Sort a list of items alphabetically, numerically or by length — asc or desc.
Split a String
Split a string by a delimiter, regex, or fixed character count into a list.
Join Multiple Strings
Join multiple strings with a custom separator, prefix and suffix.