Test regular expressions against test strings with live matching
Executed entirely on the client side. Your code, hashes, or credentials are never transmitted over the internet.
Designed for developer comfort with a high-contrast layout, clean typography, and optimized code displays.
Complies with standard RFCs and programming specifications (JSON, Web Tokens, standard cryptographic hashes) for reliable results.
Everything runs inside your web browser. We never upload your text, files, or personal data to any servers.
No sign-ups, no subscriptions, and no usage limits. Get your results instantly in a single click.
Yes, completely. The calculations are processed entirely within your browser window. No data is sent to our servers or logged.
Yes, our developers tools follow official standard specifications (such as RFC 7519 for JWT or official SHA cryptographic specs).
Yes. Because the tool runs client-side and is server-less, it is safe to use with sensitive configurations and keys.
By eliminating round-trip API delays to external servers, formatting occurs instantly, saving development time.
No. All state is held in standard local browser memory and is completely wiped as soon as you close the tab.
Yes, completely. All calculations and file conversions happen entirely inside your own browser. We do not store, view, or upload any of your input data to our servers.
No. UtilsGo is 100% free. You don't need to create an account, register, or pay for any features.
Built by UtilsGo • Last updated May 2026 • No ads • No tracking