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Free developer tools online: JSON formatter, JWT decoder, regex tester, Base64, UUID and hash generators.
Everyday engineering utilities for formatting, decoding, and generating data — built for speed and privacy in the browser.
Pretty-print, validate and minify JSON instantly.
Decode and inspect JSON Web Token payloads.
Encode and decode Base64 strings and files.
Generate UUIDs (v4) for apps and databases.
Test regular expressions with live match highlighting.
Generate MD5, SHA-1, SHA-256 and other hashes.