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Developer Tools tools

Format JSON, encode Base64, generate UUIDs, decode JWTs, and more.

JSON Formatter & ValidatorFormat, validate, and minify JSON with helpful error messages.Base64 Encoder & DecoderEncode text to Base64 or decode Base64 back to text. Supports URL-safe variant.UUID GeneratorGenerate v4 UUIDs (random) or v7 UUIDs (time-ordered). Batch up to 100 at a time.URL Encoder & DecoderPercent-encode or decode text for use in URLs. Component vs full URL modes.JWT DecoderDecode a JSON Web Token to inspect its header and payload. Does not verify the signature.QR Code GeneratorGenerate a QR code for a URL, text, Wi-Fi credentials, or contact card. Download as PNG or SVG.Password GeneratorCryptographically-strong random passwords with length & charset options.Random Number GeneratorRandom integers in a range, dice (NdM) and lottery picker (k from n).