Prefix Text Lines Tool

✨ Add a Prefix to Text Lines SEO Tool

Quickly prepend any custom prefix to every line of your text — ideal for code, lists, CSV formatting, markdown, and blogging.

🔤 Prefix to add   example: "> ", "# ", "- " or "• "
💡 Prefix will be added at the beginning of each line (including empty lines if present).
📝 Input text (lines) 0 lines
✨ Output (prefixed lines) 0 lines
⚡ Preserves blank lines & indentation

📌 How to use this "Add Prefix to Text Lines" tool

Whether you need to format bullet lists, annotate code, or prepare structured data, this utility makes it effortless. Just enter the prefix you want (e.g., ➡️ , [INFO] , or + ) and paste your lines into the input box. Click Apply Prefix — every line gets the prefix instantly.

✨ Why bloggers & developers love it

✅ SEO-friendly structured lists
✅ Prepare markdown bullet points
✅ Format log files or CSV prefixes
✅ Add comment markers (//, #, --)
✅ Great for ChatGPT prompts formatting
✅ 100% client-side, private & fast

📖 Step-by-step guide

1. Type or paste your custom prefix into the Prefix to add field (e.g., "• " or "1. ").
2. Write or paste your multiline text in the left input area.
3. Click the "Apply Prefix" button — the right-side output will show each line with the new prefix.
4. Use "Copy" button to grab the result or "Reset" to remove prefix transformation.
5. Need inspiration? Click "Load sample" to see how prefixes transform text quickly.

🧠 Advanced tips

• The tool preserves empty lines: if a line is empty (zero characters), it will show only the prefix.
• You can paste thousands of lines; performance is optimized for large texts.
• Use any Unicode characters, emojis, spaces, or special symbols as prefix.
• Combine with other formatting workflows (e.g., remove duplicates, sort lines) by copying output back to input for further modifications.

🔧 Technical & ranking notes

This tool is built with semantic HTML5, responsive design, and fast JavaScript. It is optimized for Google's Core Web Vitals: minimal layout shift, fast interaction, and mobile-friendly. The tool works entirely offline after page load — perfect for bloggers embedding into posts. Trusted by content creators for clean line manipulation.


© Add Prefix Tool — Free online utility. No login, no tracking, just productivity. Bookmark for frequent use.