Are these developer tools free?
Yes. Format JSON, encode Base64, generate hashes, UUIDs, QR codes, and more for free.
Tool category
Developer Tools
Free developer tools to format JSON, encode and decode Base64 and URLs, generate hashes, UUIDs, QR codes, and more.
JSON FormatterFormat, validate, and beautify JSON online.Base64 Encode/DecodeEncode text to Base64 or decode Base64 back to text.URL Encode/DecodeEncode or decode URL and query string values.Hash GeneratorGenerate MD5, SHA-1, and SHA-256 hashes from text.UUID GeneratorGenerate random UUID version 4 identifiers instantly.QR Code GeneratorCreate a free QR code for any link or text.Timestamp ConverterConvert Unix timestamps to dates and back.
Developer Tools FAQ
Is my data sent to a server?
No. Developer tools run in your browser, so your code and data stay on your device.
Do I need to sign up?
No signup is needed for the developer tools.