Hash Generator
Calculate SHA-256, SHA-384 or SHA-512 locally and output the digest as hex or Base64.
Developer Tools
The developer tools generate UUIDs, cryptographic hashes and Base64 encodings right in the browser. Every operation runs locally through the Web Crypto API — no data ever leaves your device.
Cryptography & Security
Calculators and tools in the Cryptography & Security section.
Open
UUID Generator
Generate UUID v4 locally with correct version and variant bits.
Encoding & Formats
Calculators and tools in the Encoding & Formats section.
Base64 Encoder
Encode UTF-8 text as standard Base64 or decode Base64 to text.
JSON Formatter
Check JSON for validity and display it formatted with indentation – locally in the browser, with no data transmission.
URL Encoder
Encode text as a percent-encoded URL component (RFC 3986) or decode it back – locally in your browser.
Development Tools
Calculators and tools in the Development Tools section.
Regex tester
The RegExp is run in isolation in a Web Worker against the test text; matches and groups are displayed.