A collection of useful developer tools, utilities and keygens
Format and validate JSON data
Encode and decode Base64 strings
Generate Charles Proxy activation keys
Encode and decode URLs
Decode and inspect JWT tokens
Convert Unix timestamps to dates
Generate MD5, SHA hashes
Generate unique identifiers
Test regular expressions
Format HTML and XML code
Convert between binary, hex, decimal
Compare text differences
Convert images to Base64
Generate QR codes from text
Decode ASN.1 DER/BER structures
Free online developer tools and utilities for encoding, formatting, generating, and analyzing data. No registration required - all tools work directly in your browser.
Built for developers, by developers. Privacy-focused and open source.
Free online tools for Base64 encoding, JSON formatting, URL encoding, hash generation, UUID creation, QR codes, JWT decoding, timestamp conversion, regex testing, and more.
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