Line Number Adder
Text ToolsAdd numbers to the start of every line
Embed this tool on your websiteFree
- Choose how tall the frame should be.
- Press Copy code.
- Paste it into your page, blog, WordPress or Notion HTML block.
The tool runs inside your visitor's browser, nothing is uploaded, and a small "Powered by ToolCloak" line stays under it. The second line (script) is optional: it makes the frame fit the tool's height.
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History
All history →Line Number Adder — at a glance
Number every line of your text, or strip the numbers off again.
How to use it — step by step
Paste a list, script or code. Pick the style of numbering.
Paste your input
Paste or type your content into the big input box.
Choose options
Pick the mode and options that fit what you need.
Add Numbers
Press the button. The result is created instantly on your device.
Copy the result
Check the output and press Copy to use it anywhere.
Pro tips
Small things that make the result better.
Quick facts
Frequently Asked Questions
Can I remove existing numbers?+
Yes. Switch to “Remove numbers” and it strips leading numbers such as “1.” or “2)”.
Can numbering start from 0?+
Yes. Change “Start at” to 0 or any other number.
Does it work for code?+
Yes — paste any code and each line gets a number.
Is my data safe?+
Yes. Everything runs inside your own browser. Your text, files and images are never uploaded to any server.