ToolWren⚙️Regex Tester
Test a regular expression against sample text with live matches, flags and capture groups. Runs in your browser.
✍️Word Counter
Count words, characters, sentences and paragraphs with reading-time estimate, live as you type. Private, in your browser.
🔠Case Converter
Convert text between UPPER, lower, Title, Sentence, camelCase, PascalCase, snake_case, kebab-case and CONSTANT_CASE.
🔗Slug
Turn any title or sentence into a clean, URL-safe slug. Handles accents and lets you choose the separator.
🔍Text Diff
Compare two blocks of text line by line and highlight what was added, removed or changed. Runs in your browser.
🔄Reverse Text
Reverse text character by character instantly. Free online text reverser.
🧹Dedupe Lines
Remove duplicate lines from a list, keeping the first occurrence. Free online duplicate line remover.
🔤Sort Lines
Sort lines alphabetically (A-Z or Z-A), numerically, or reverse them, with dedupe. Free online line sorter.
📃Line Counter
Count the number of lines, non-empty lines and characters in text. Free online line counter.
✂️Whitespace
Trim each line and collapse repeated spaces and blank lines. Free online whitespace cleaner.
📻NATO Phonetic
Convert text to the NATO phonetic alphabet (Alpha, Bravo, Charlie). Free online NATO phonetic converter.
🙃Upside Down
Flip text upside down using special Unicode characters. Free online upside down text generator.
💬Leetspeak
Convert text to leetspeak (l33t), replacing letters with numbers and symbols. Free online leet converter.
📊Char Frequency
Count how often each character appears in text, sorted by frequency. Free online frequency counter.