Regex Playground is a powerful yet intuitive tool for building, testing, and understanding regular expressions on your Mac. Features: • Live Pattern Testing — See matches highlighted instantly as you type your regex pattern • Pattern Explanation — Break down any regex into tokens with plain-English explanations for each part • Quick Insert — Insert common regex tokens with one click — anchors, quantifiers, character classes, and more • Code Generation — Export your regex as ready-to-use code in 10 languages: Swift, Python, JavaScript, TypeScript, Java, C#, Go, Rust, PHP, and Ruby • Multi-String Testing — Test your pattern against multiple strings at once with pass/fail assertions • Find & Replace — Preview replacements with capture group references ($1, $2) and compare with diff view • Performance Analysis — Get warnings about potentially slow patterns like catastrophic backtracking or nested quantifiers • Pattern Library — Access common patterns for emails, URLs, dates, and more — or save your own • History — Quickly revisit your recently used patterns • Export/Import — Share your custom patterns as JSON files • Cheat Sheet — Built-in reference for regex syntax when you need a quick refresher Whether you're learning regex for the first time or you're a seasoned developer, Regex Playground helps you craft the perfect pattern faster.
