Code Review and Debugging
Add line numbers to code snippets and logs so it becomes easier to say “check line 18” instead of describing a line manually.
Add line numbers to text in seconds with a cleaner browser tool built for code, notes, scripts, logs, transcripts, lists, and draft documents. Choose a custom starting number, pick the numbering style, use leading zeros, and decide whether blank lines should also be counted.
Number each line of your text instantly for code, notes, scripts, logs, transcripts, documentation, and structured lists.
Paste your text, choose the numbering format, and generate a cleaner line-by-line version that is easier to review, quote, debug, explain, or share.
Add line numbers to code snippets and logs so it becomes easier to say “check line 18” instead of describing a line manually.
Number dialogue, transcript excerpts, classroom notes, and meeting summaries so discussion and revision stay organized.
Create clearer text for guides, bug reports, tickets, and documentation where specific line references save time.
Paste a short code block before sending it to a friend, teacher, or teammate. Numbered lines make feedback much easier because people can refer to a specific line directly.
Number lines in interview notes or transcript sections so quotes and corrections can be discussed with better precision.
Start from line 25, 100, or any other value when your new text is part of a larger document and the numbering needs to continue.
Keep blank lines numbered when spacing matters, such as scripts, poetry, structured notes, or multi-part formatted text.
This tool reads your text line by line and places a number before each eligible line using the style you choose. You can set the starting number, enable leading zeros, and decide whether blank lines should also receive numbers.
That makes it useful for far more than simple formatting. Developers can number code and logs, writers can prepare scripts, students can structure notes, and support teams can reference lines in reports or troubleshooting steps.
Because everything runs directly in your browser, the tool is fast, private, and easy to use whenever you need line-by-line text preparation.
Clean repeated lines from notes, lists, or large text blocks with the Remove Duplicate Lines tool.
Need the opposite workflow? Use the Remove Line Breaks tool when text needs to be flattened into one line or paragraph.
Continue with the Text Sorter or other text utilities when you want to organize lines after numbering them.
This tool is built for anyone who wants cleaner structured text without manually typing line numbers one by one. It helps you number each line instantly for code, scripts, logs, notes, transcripts, instructions, and formatted lists.
That makes it useful for developers, students, teachers, editors, writers, researchers, and support teams. Instead of editing line numbers by hand, you get a faster and more consistent result in seconds.
Line numbers make text easier to reference, review, explain, and discuss. They are especially helpful when someone needs to point to a specific line in code, notes, scripts, logs, or any other structured content.
This tool works well for coding practice, debugging help, assignment formatting, transcript preparation, review comments, documentation writing, support tickets, and any workflow where line-by-line references save time.