Developer tools: QR code generator · JSON formatter · Base64 encoder / decoder.
Turn text or a URL into a downloadable QR code.
Format, minify and validate JSON.
Convert text to Base64 and back, including Unicode.
Encode and decode special URL characters.
Calculate SHA-256, SHA-384 and SHA-512.
Generate random UUID v4 values in batches.
Choose length and characters. Secure random values.
Convert Unix seconds, milliseconds and dates.
Convert HEX, RGB and HSL color values.
Generate MD5 or compare your own candidate texts.