Add Line Numbers
Prefixes plain text with row numbers. It is for sharing snippets, reviewing lists, and referencing lines in notes or support tickets.
Runs in your browser. Input, settings, and results are not sent to Utilio servers.
Add Line Numbers
Live local processing
- Words
- 11
- Characters
- 62
- Lines
- 2
- Read time
- 1 min
Each of the 2 lines was prefixed with a line number for easier reference.
What Add Line Numbers does
Use Add Line Numbers when you need to number a checklist before discussing it in chat.
When to use it
- Number a checklist before discussing it in chat.
- Add references to log snippets, examples, or plain-text data.
- Prepare numbered lines for documentation or support replies.
How to use it
- Paste the text with line breaks.
- Apply line numbering.
- Copy the result and verify empty lines are handled the way you expect.
What to check
- Line numbers become part of the copied text.
- Remove numbering before pasting back into code or CSV data.
Data, formats, and limits
What stays on your device and what is sent
Runs in your browser. Input, settings, and results are not sent to Utilio servers.
Supported formats
This tool works with typed or generated values rather than uploaded files.
File limits and browser requirements
- Use an up-to-date browser and check the result on the device where you will use it.
Known limits
- Text processing depends on characters, line breaks, and Unicode details in the source text.
- Before publishing or sending the result, check it in the app where it will be used.
Troubleshooting
- If the result is unexpected, check line breaks, extra spaces, and hidden Unicode characters.
- If pasted text from a phone or document looks odd, paste it into a plain text editor first and copy it from there.
- Before publishing, check the result where the text will actually be used.
Common questions
What does Utilio receive?
Runs in your browser. Input, settings, and results are not sent to Utilio servers.
What is it useful for?
Use it when you need to number a checklist before discussing it in chat. Start by pasting the text with line breaks.
Do I need an account?
No. You can use this tool without creating an account.
Can I use it on a phone?
Yes. The tool works in a mobile browser, though longer input or detailed results may be easier to review on a larger screen.
How do I get a reliable result?
Paste the text with line breaks. Then apply line numbering. Line numbers become part of the copied text.
Does Utilio use my input or results to train AI?
No. Utilio does not use files, pasted text, settings, generated values, or results from this tool to train AI models.

