Is Add Line Numbers completely free?

Yes, completely free with unlimited use. No registration, login, or hidden fees required. Generate line numbers as many times as you need.

Can I add line numbers to code?

Yes. Add Line Numbers works with all programming languages including Python, JavaScript, Java, C++, PHP, SQL, HTML, CSS, and more. It preserves all formatting and indentation.

Does this tool work on my phone?

Yes, works on iPhone, Android, tablets, and desktop browsers. The responsive design adapts to any screen size for easy mobile editing.

Is my text safe and private?

Yes, completely private. All processing happens in your browser—text never uploads to servers. Close the tab and your data is deleted. No tracking or data collection.

What's the maximum text length I can process?

You can process up to 100,000 characters in one go. For larger documents, split them into sections or process them separately.

Can I start numbering from a number other than 1?

Yes. Use the 'Starting Number' option to begin at any number: 0, 10, 100, or any value you need. This is useful for continuing numbering in document sections.

How do I remove line numbers after adding them?

Copy the original text without numbers and use the tool's reverse function, or paste numbered text and manually remove the numbers. Save your original text separately if you might need it later.

Does the tool preserve blank lines?

By default, yes. Blank lines are preserved with their own line numbers. Enable 'Skip blank lines' option if you want to exclude empty lines from numbering.

online

Add Line Numbers — online

Add line numbers to text or code.

Input

Start number

Separator

How to use Add Line Numbers

Paste Your Text or Code

Click the large text area labeled 'Input' and paste your text, code, or document. You can paste up to 100,000 characters at once. The tool accepts plain text, source code (Python, JavaScript, Java, etc.), and any text-based format.

Select Line Numbering Options

Choose your preferences from the options panel: select starting number (default is 1), choose delimiter (space, tab, or colon), and pick number format (1, 01, 001). Check 'Skip blank lines' if you want to exclude empty lines from numbering.

Click Generate and Copy Results

Press the blue 'Add Line Numbers' button. Your numbered text appears instantly in the 'Output' section. Click the 'Copy to Clipboard' button to copy all numbered lines, then paste into your document, IDE, or editor.

Frequently Asked Questions

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