rgx.tools

rgx.tools is a simple web tool that turns natural language descriptions into regular expressions. You type something like "match a URL with http/https protocol" or "validate an email address," and it generates the regex pattern for you, along with a code example. It's basically a text-to-regex translator powered by AI — no manual regex writing required.

Behind the scenes, the tool is a wrapper around OpenAI's GPT-3.5 Turbo. You pick a programming language (JavaScript, Python, Java, C#, Ruby, PHP, Go, Rust, Kotlin, Swift, or SED), type your description, and the AI produces a clean, readable regex with a matching code snippet. There's also a set of pre-built examples for common patterns like phone numbers, dates, passwords, hex colors, and social security numbers. The output is simple: the regex and a code example — nothing fancy, but it gets the job done.

The main audience is developers and anyone who occasionally needs regex but doesn't want to become a regex expert. If you're building a form validator, scraping data, or just need to find specific text patterns, this tool saves you from staring at regex charts or trial-and-error testing. It's also useful for students learning regex — you can describe what you want and see how it translates into the pattern.