Can I start numbering from a number other than 1?

Yes. Set any custom starting number (e.g., 10, 50, 100) in the Start Number configuration field.

What is leading zero padding?

Zero padding pads numbers with leading zeros (e.g. 01, 02... 09, 10 or 001, 002) so that numbers take up equal character widths for cleaner alignment.

Can I skip numbering empty or blank lines?

Yes. Enable the "Skip blank lines" checkbox, and blank lines will be preserved in the output without receiving a line number.

What separators can I use between the number and text?

You can choose standard separators like dot (". "), right parenthesis (") "), colon (": "), hyphen ("- "), tab ("\t"), or type your own custom delimiter.

Is my text sent to a remote server?

No. All line splitting and numbering happens entirely in your local browser JavaScript engine. No data is sent over the network.

Add Line Numbers

Add sequential line numbers to text or code with custom formatting online free.

100% free
Private in browser
No signup
No watermarks

Input Text / List

Start At

Step / Increment

Zero Padding

Separator

Numbered Text

7 lines numbered

1. Apple
2. Banana
3. Cherry
4. Date
5. Elderberry
6. Fig
7. Grape

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About Add Line Numbers

Add Line Numbers on TheToolss inserts sequential line numbers in front of each row in your text, data list, or code snippet. Choose your starting number and step size, apply leading zero padding (e.g. 01, 001), customize delimiter characters (such as . or ) or tabs), and choose whether to number or skip blank lines. Everything runs privately and instantly in your browser.

How to use Add Line Numbers

Paste your text or list into the input box.
Customize the start number, increment step, zero padding, and separator symbol.
Click Copy to clipboard to grab the numbered text output.

Key features

Configurable start number (e.g., 1, 100) and increment step
Zero-padding options (e.g. 01, 001, 0001) for aligned list numbering
Custom separators: dot, bracket, colon, tab, or custom string
Option to skip numbering for blank or empty lines
100% private and client-side processing without uploading text

Frequently asked questions

Can I start numbering from a number other than 1?: Yes. Set any custom starting number (e.g., 10, 50, 100) in the Start Number configuration field.
What is leading zero padding?: Zero padding pads numbers with leading zeros (e.g. 01, 02... 09, 10 or 001, 002) so that numbers take up equal character widths for cleaner alignment.
Can I skip numbering empty or blank lines?: Yes. Enable the "Skip blank lines" checkbox, and blank lines will be preserved in the output without receiving a line number.
What separators can I use between the number and text?: You can choose standard separators like dot (". "), right parenthesis (") "), colon (": "), hyphen ("- "), tab ("\t"), or type your own custom delimiter.
Is my text sent to a remote server?: No. All line splitting and numbering happens entirely in your local browser JavaScript engine. No data is sent over the network.