Free online line numberer — add sequential line numbers to text instantly in your browser. No data is stored. Configurable starting number, separator, padding width, and empty line handling.
Free online line numberer — add sequential line numbers to text instantly in your browser. No data is stored. Configurable starting number, separator, padding width, and empty line handling.
Runs entirely in your browser. No data is sent to our servers.
Add sequential line numbers to a code snippet
Case Converter
Free online case converter — transform text between camelCase, PascalCase, snake_case, kebab-case, and more instantly in your browser. No data is stored. Supports 11 formats including CONSTANT_CASE, dot.case, and path/case.
Slugify
Free online slugify tool — convert text to URL-friendly slugs instantly in your browser. No data is stored. Supports custom separators, Unicode/accent handling, and strict mode for special characters.
Text Reverser
Free online text reverser — reverse characters, word order, or line order instantly in your browser. No data is stored. Outputs all three reversal modes simultaneously with proper Unicode support.
Line Sorter
Free online line sorter — sort lines of text alphabetically, numerically, naturally, or by length instantly in your browser. No data is stored. Supports ascending/descending order, case sensitivity, and empty line filtering.