How to use
01
Paste the text to number
Drop code, contract text, or log output into the input pane. The Try sample button loads three short lines so you can preview the numbering style first.
02
Read the numbered output
The output pane prefixes every line with a right aligned number and a pipe character. Single digit numbers pick up leading spaces whenever the total line count needs more digits.
03
Copy the result
Press Copy above the output pane and paste the numbered text into your email, ticket, or review comment. Clear wipes the input for the next snippet.
Why Add Line Numbers
- Prefixes each line with a right-aligned line number.
- Padding adjusts automatically based on total line count.
- Useful for sharing log snippets or quoting code.
Common questions
What format do the added line numbers use?
Each line becomes the number, a space, a pipe, another space, then your original text, so line one reads as 1 | followed by the content. The separator is fixed, there's no option to switch it for a period or a tab.
Can the number lines tool start at zero or another offset?
No, counting always starts at 1 and increments by one per line. If you need zero based numbering to match an editor's convention, mention the difference when you cite a line.
Do blank lines receive line numbers as well?
Yes, every line in the paste is numbered, including empty ones. That's deliberate: skipping blanks would make the numbers disagree with what any text editor shows for the same content.
Why are the line numbers padded with extra spaces?
Padding keeps the pipe separators vertically aligned in monospace fonts. The width comes from the total line count, so a 250 line paste pads every number to three characters and the gutter stays straight from top to bottom.
How do I remove line numbers after they've been added?
There's no reverse mode here, but the format is regular enough that Find and Replace handles it: enable regex and replace a pattern like ^\s*\d+ \| with nothing. Keeping the original unnumbered copy is still the easier path.
Is numbering lines helpful for legal documents?
Very. Numbered lines let both sides of a negotiation cite line 112 of a draft instead of quoting whole passages, the same reason court pleading paper has carried line numbers for over a century.
Does adding line numbers alter the original text?
No. Your input stays untouched in the left pane, and the numbering exists only in the output copy. Keep the clean version for anything that goes back into an editor or a build.