Line Number Adder
Add line numbers to text
1: function hello() {
2: console.log("Hello");
3: return true;
4: }Related Tools
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What is a Line Number Adder?
A line number adder prepends sequential numbers to each line of text. This is useful for referencing specific lines in code reviews, documentation, legal documents, or any text where line-by-line reference is needed.
This tool offers customizable options for the starting number, separator style, and number padding to match your specific formatting needs.
Options Explained
Start At
The first line number to use. Default is 1, but you can start at 0 or any number.
Separator
Characters between the number and line content. Common options: ": ", ". ", ") ", or a tab.
Pad Width
Minimum width for numbers, padded with spaces. Set to 3 for files with 100+ lines.
Common Use Cases
| Use Case | Recommended Settings |
|---|---|
| Code review | Start: 1, Sep: ": ", Pad: 3 |
| Legal documents | Start: 1, Sep: ". ", Pad: 4 |
| Array indices | Start: 0, Sep: ") ", Pad: 0 |
FAQ
Why use padding?
Padding aligns text for long files. Without it, line 9 and line 100 won't align. Set pad width to the number of digits expected.