Add Prefix to Text Lines
Instantly add custom text, symbols, or formatting to the start of every line. Supports bulk processing and file export.
Configuration
What is the Prefix Tool?
The Add Prefix to Text Lines tool creates a fast, automated way to insert text, symbols, or characters at the very beginning of every line in your document. Whether you are formatting a markdown list, prepping SQL queries, or adding bullet points, this tool saves you from manual typing errors. If you need to add text to the end of each line instead, use our Add Suffix to Text Lines tool.
Why You Need It
Code & Data
Prepend "INSERT INTO..." for SQL queries or add comment characters like "//" or "#" to comment out blocks of code.
Markdown Lists
Instantly turn a plain list into a bulleted list by adding "- " or "> " for blockquotes to every line.
Email & Reply
Add "> " to simulate email reply threads or format quoted text blocks for forums.
See it in action
Professional Features
Smart Formatting
Automatically wrap your prefix in brackets [ ] or quotes " " with a single click, saving manual edits.
Bulk Processing
Process lists of 50,000+ lines instantly. Perfect for large datasets, logs, or CSV files.
Empty Line Filter
Enable "Ignore Empty Lines" to automatically skip blank rows, keeping your document structure clean.
File Support
Directly upload .txt, .csv, or .md files to process content without copy-pasting limits.
100% Private
All processing happens in your browser. No data is sent to our servers, ensuring total privacy.
Instant Export
One-click Copy to clipboard or Download your prefixed result as a new text file.
How to use this tool
Input Text
Paste your list or upload a file containing the lines you want to modify.
Set Prefix
Type the character, symbol, or word you want to appear at the start of every line.
Configure
Choose a wrapping style (Brackets/Quotes) and toggle empty line filtering.
Export
Copy the result to your clipboard or download the modified file.