Line Splitter
Number every line in pasted text in one click — perfect for code reviews, error reports and migration QA.
What is Line Splitter?
Reviewing a pasted blob without line numbers means reviewers say 'the third one from the bottom' instead of 'line 47'. That's slow and error-prone.
Paste your text and get a numbered version back.
If you're handing off migration previews, you reference exact rows in runbooks. If you're triaging errors, you point at specific stack frames in chat. If you're reviewing code, you make pastes easy to discuss.
How to use Line Splitter
Four steps. No setup, no signup.
Step 1
Paste your text or code
Step 2
Set start-from value if needed
Step 3
See each line numbered
Step 4
Hit Copy and paste into your review
Example
Plain lines get numbered for easy reference.
Input
first line second line third line
Output
1: first line 2: second line 3: third line
Why Line Splitter is useful
- ✓
Reference exact rows in code reviews and bug reports.
- ✓
Set the start number to align with the original file.
- ✓
Toggle skip-empties for clean code-review numbering.
- ✓
Pairs perfectly with Slack code blocks for clean snippets.
Common questions
Can I start from a number other than 1?
Yes, set the start index to align with the source file.
Tip: Useful when reviewing slices of larger files.
CRLF vs LF?
Both work. Output uses your system's default.
Tip: Cross-platform safe.
Are empty lines numbered?
Yes by default. Toggle skip-empties to omit them.
Tip: Skip for code reviews, keep for source-aligned numbering.
How does this differ from Text Splitter?
Both produce line output. Line Splitter also numbers and formats.
Tip: Text Splitter for non-newline delimiters.
Last reviewed: April 2026 · Free, browser-based, no signup.
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