Add Line Prefix to Text
Prefix each line with custom text in one click. Great for lists, notes, and formatting tasks.
Text input
Paste one item per line to prefix each line.
Processing happens locally in your browser; nothing is uploaded.
Prefixed outputEach line with your selected prefix prepended.
Typical inputs process in under 1ms on modern browsers.
How to add a line prefix
Prefix lines in 3 steps
Takes ~5 seconds- 1Enter prefix
Type the text to prepend to every line.
- 2Paste lines
Add your line-separated input in the text box.
- 3Generate output
Click "Add prefix" to create prefixed lines.
Who should use this tool?
- Writers formatting list content
- Developers preparing command-line arguments
- Teams standardizing prefixes in exported text
Examples
Adds a bullet to each line.
Adds a key prefix for config-like lines.
Adds a URL path prefix.
Prefix every line quickly
Add a shared prefix to each line to keep text consistent and ready for reuse.
Use this line prefix tool to prepend custom text to each line of your input. Enter a prefix, paste line-separated content, and generate prefixed output instantly. Everything runs locally in your browser for fast, private text formatting.
Apply a shared prefix to all lines without manual edits.
- One prefix for all lines
- Instant output
- No server upload
Handle large text blocks and copy the result quickly.
- Preserves line order
- Line-by-line formatting
- Copy or download easily
Line prefix tips
Keep prefix formatting consistent across all lines.
- Include trailing spaces in your prefix when needed.
- Use one logical item per line for clean output.
- Re-run after edits to keep every line aligned.
Frequently asked questions
Can I use symbols in the prefix?>
Does this keep the original line order?>
Is my text sent to a server?>
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