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Add line numbers to text, with your choice of start value, step, and format (1., 1), 01, or tab-separated). Blank lines can be skipped.
The result appears here as you type.
Steps, a list, or code you want to reference by line.
Choose the start value, step, and format. Zero-padded numbers (01, 02 … 10) keep columns aligned.
Blank lines are skipped by default, so numbering continues across paragraph gaps.
Yes. Set Start at to any whole number, and Step to count by 2, 5, 10, and so on. BASIC-style numbering is start 10, step 10.
Use Find & replace with regular expressions on: find ^\d+[.):]?\s* and replace it with nothing.
No. Everything runs in your browser, and nothing you paste is sent to a server or stored.
Text & code
Compare two texts or code files side by side, with changed words highlighted. Ignore whitespace or case, and export a unified .diff patch that git apply accepts.
Count
Count words, characters, sentences, paragraphs, and lines as you type, with reading and speaking time. Check text against X, SEO title, and meta description limits.
Case
Convert text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, and more, line by line.
Cleanup
Clean up messy text: remove extra spaces, blank lines, invisible characters, and HTML tags, straighten quotes, and rejoin hard-wrapped lines.
Lines
Delete repeated lines from a list and keep the original order. Choose case sensitivity, whether to ignore surrounding spaces, and whether to keep the first or last copy.
Lines
Delete blank lines from text, or collapse runs of blank lines down to one so paragraphs stay separated.