DevToolBox is designed for fast browser-based developer tasks: cleaning JSON, checking regex patterns, decoding Base64 or JWTs, generating hashes, converting timestamps, and building cron expressions without opening a heavyweight IDE plugin.
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DevToolBox is a free collection of online developer tools including JSON formatter, Base64 encoder/decoder, regex tester, hash generator, JWT decoder, timestamp converter, and more โ all running entirely in your browser with no server-side processing.
Yes, all tools on DevToolBox are completely free with no registration required. All data processing happens client-side in your browser, so your data never leaves your machine.
DevToolBox offers tools for JSON formatting, Base64 encoding/decoding, regex testing, hash generation (MD5, SHA-1, SHA-256, SHA-512), JWT decoding, timestamp conversion, URL encoding, CSS gradient and shadow generation, text diff, QR code generation, cron expression building, SQL formatting, chmod calculation, and more.