A prefix and suffix tool adds custom text to the start (prefix), end (suffix), or both sides of every line in your text. Whether you are wrapping list items in HTML tags, adding comment markers to code, or formatting data for export, this free online text prefix tool applies bulk edits in one click. No signup required. Try it now for instant results.
✨ Try the Free Online Prefix/Suffix
How to Use Prefix/Suffix — Step by Step
Step 1: Paste your lines
Type or paste your multi-line text into the input box. Each non-empty line will receive the prefix or suffix.
Step 2: Type the text to add
Enter the text you want to prepend or append in the text field. This could be a tag, delimiter, comment marker, or any string.
Step 3: Choose Prefix, Suffix, or Both
Click Add Prefix to prepend, Add Suffix to append, or Add Both to wrap each line with your text on both sides.
Step 4: Review and copy
The modified text appears instantly. Copy it for use in your HTML, code, or document.
Step 1: Paste your lines
Type or paste your multi-line text into the input box. Each non-empty line will receive the prefix or suffix.
Step 2: Type the text to add
Enter the text you want to prepend or append in the text field. This could be a tag, delimiter, comment marker, or any string.
Step 3: Click Prefix, Suffix, or Both
Choose Add Prefix to prepend, Add Suffix to append, or Add Both to wrap each line with your text on both sides.
Real-World Examples
HTML List: Paste a list of items and add
Code Comments: Add // as a prefix to every line to comment out a block of code across multiple languages.
CSV Preparation: Add a comma as a suffix to each item for quick comma-separated formatting before combining into a single line.
SQL Values: Add quotes as prefix and suffix to each item, then join with commas for an SQL IN clause: '''item1''', '''item2''', '''item3'''.
Log Prefixing: Add [INFO] as prefix to every line of a log file for consistent parsing in your log aggregation system.
Features
- Three modes: add prefix, add suffix, or add both simultaneously
- Empty lines are preserved without modification
- Instant results as you click — no waiting or page reloads
- Works with any text: HTML tags, code comments, delimiters, or plain text
- Completely private — all processing happens in your browser
- Free forever with no signup required
Tips & Best Practices
- Use for HTML list generation: Quickly wrap list items in
- tags for navigation menus, dropdowns, or unordered lists.Comment out code blocks: Add // or /* */ as prefix/suffix to temporarily disable code blocks in any language.
- Prepare data for SQL: Add quotes and commas to create VALUES lists or IN clauses for database queries.
- Prefix with timestamps: Add [TIMESTAMP] prefix to log lines for consistent log formatting across systems.
- Combine with Number Lines: Use Number Lines first, then add prefixes for perfectly formatted numbered lists.
- Handle empty lines: The tool skips empty lines by default. This preserves paragraph structure in your output.
Common Use Cases
Web Developers
Wrap list items in HTML tags, add CSS classes to markup lines, or prepend import statements to code blocks.
Data Analysts
Add CSV delimiters, JSON brackets, or SQL values wrappers to bulk-format data for database import or API calls.
Content Managers
Add markdown bullet points, email prefixes, or catalog numbering to large lists and documents quickly.
DevOps Engineers
Add environment prefixes to config files, timestamp prefixes to logs, or namespace prefixes to Kubernetes resources.
Use Cases
Web Developers
Wrap list items in HTML tags, add CSS classes to markup lines, or prepend import statements to code blocks.
Data Analysts
Add CSV delimiters, JSON brackets, or SQL values wrappers to bulk-format data for database import or API calls.
Content Managers
Add markdown bullet points, email prefixes, or catalog numbering to large lists and documents quickly.
Frequently Asked Questions
[('What types of text can I add as a prefix or suffix?', 'Any text string works — HTML tags, code comments, delimiters, numbers, or plain text. The tool adds your exact text to each line.'), ('Does it modify empty lines?', 'No. Empty lines are preserved as-is without any prefix or suffix added. Only non-empty lines receive the modification.'), ('Can I add different text to each line?', 'No. The tool adds the same prefix or suffix to every non-empty line. For different text per line, use our Regex Find & Replace tool.'), ('Is there a limit on how many lines I can process?', 'No practical limit. The tool handles lists from a few items to thousands of lines efficiently in your browser.'), ('Can I use this to create HTML lists?', 'Yes. Paste your items, add- tags for a complete HTML list.'), ('Is my data sent to a server?', 'No. All processing happens locally in your browser. Your text is never transmitted to any external server.'), ('Can I add both prefix and suffix at once?', 'Yes. Use the "Add Both" button to wrap each line with your text on both sides simultaneously.'), ('Does it preserve leading/trailing whitespace?', 'Yes. The tool only adds your prefix/suffix. Existing whitespace on each line is preserved exactly.')]