Developer bench
Useful utilities, without the setup. Ten free browser tools with local processing.
Choose your next task
No account requiredJSON formatter
Make valid JSON easier to inspect with indentation and clear nesting.
02 / DEV ↗UTF-8 Base64
Encode Unicode text as Base64 or decode Base64 bytes back into UTF-8 text.
03 / DEV ↗URL component encoder
Encode a single URL component without confusing its spaces and special characters with URL syntax.
04 / DEV ↗HTML entities
Escape characters that have special meaning in HTML or decode the supported entities.
05 / DEV ↗CSS comment cleaner
Remove CSS comments outside quoted strings while keeping whitespace and expressions intact.
06 / DEV ↗JavaScript minifier
Parse and minify a JavaScript snippet with the bundled Terser processor.
07 / DEV ↗HTML comment cleaner
Remove comments from parsed HTML while retaining text whitespace in the output.
08 / DEV ↗Regex tester
Test a regular expression in a separate worker with a processing time limit.
09 / DEV ↗Hex ↔ RGB
Convert supported hex and RGB notation into consistent representations of the same colour.
10 / DEV ↗Unix timestamp converter
Convert Unix seconds to UTC dates or an explicitly offset date to Unix seconds.
Your files, your device.
Files are processed in your browser. No processing server, account or paid API is required. Device text-to-speech voices may use operating-system network services.