Format JSON, encode Base64, generate UUIDs, test regex, decode JWT, and more — free online developer utilities.
Format JSON online free. Beautify, prettify, and minify JSON instantly. Free JSON formatter for developers.
Validate JSON online free. Check JSON syntax errors instantly with a free JSON validator.
Encode and decode Base64 online free. Convert text to Base64 and back instantly in your browser.
Generate UUID online free. Create UUID v4 identifiers instantly for apps, tests, and databases.
Format HTML online free. Beautify and tidy HTML markup instantly in your browser.
Format CSS online free. Beautify stylesheets and clean CSS formatting instantly.
Format JavaScript online free. Beautify and prettify JS code instantly in your browser.
Decode JWT online free. Inspect JWT header and payload locally in your browser.
Pick colors and convert HEX, RGB, HSL online free. Free color picker for CSS and design.
Convert Unix timestamp online free. Epoch to date and ISO conversion for developers.
Test regex online free. Live match highlighting and capture groups in your browser.
Format and beautify XML online free. Pretty-print and check well-formed XML in your browser.
Format YAML online free. Beautify YAML and convert between YAML and JSON instantly.
Explain cron expressions online free. Translate cron schedules into plain English.
Convert number bases online free. Binary, octal, decimal, and hexadecimal converter.
Format SQL online free. Pretty-print and beautify SQL queries in your browser.