Add Line Numbers
Add line numbers to text
- Processed client-side in your browser — files never leave your device.
- Free, with no signup, account, or usage limits.
- Works on any modern browser, including mobile.
About this tool
Use Add Line Numbers when you need to add line numbers to text. Processing runs locally in your browser — your input is not uploaded to ThothBox.
How to use
- Open Add Line Numbers and paste or type your input.
- Choose any options that affect the output.
- Run the tool or watch the live result update.
- Copy or download the output.
FAQ
What does Add Line Numbers do?
Add line numbers to text.
Is Add Line Numbers private?
Yes for typical use: input is processed in your browser and is not uploaded to ThothBox.
Is Add Line Numbers free?
Yes. It is free to use with no signup required.
How do I use Add Line Numbers?
Open the Add Line Numbers tool, then open Add Line Numbers and paste or type your input.