DevZen Tools
Fast, privacy-focused online developer utilities. 100% browser-based with zero server lag.
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JSON Formatter, Beautifier & Schema Validator
Format, beautify, validate, and minify JSON payloads in real-time with syntax highlighting and instant structural error detection.
Base64 Encoder & Decoder (UTF-8 / URL-Safe)
Encode plain text or binary strings to Base64 and decode Base64 data with full UTF-8 and URL-safe character support instantly.
RegEx Tester, Debugger & Pattern Matcher
Test and debug regular expressions in real-time with capture group extraction, color-coded match highlights, and common regex presets.
JWT Token Decoder & Expiration Inspector
Decode JSON Web Tokens instantly to inspect header algorithms, payload claims, and token expiration timestamps with 100% client-side privacy.
Cryptographic Hash Generator (MD5, SHA-1, SHA-256, SHA-512)
Generate sub-millisecond cryptographic message digests for strings using native Web Crypto hardware acceleration and RFC 1321 MD5.
Unix Timestamp & Epoch Converter (Live Ticking Clock)
Convert Unix epoch timestamps in seconds and milliseconds to local, UTC, and ISO-8601 human-readable dates and back with live digital clock.
UUID / GUID v4 Bulk Generator (CSPRNG Secure)
Generate RFC 4122 compliant random UUIDv4 and GUID identifiers in bulk using cryptographically secure Web Crypto CSPRNG.
URL Encoder & Decoder (RFC 3986 Query Parser)
Encode and decode URLs, query strings, and URI components with RFC 3986 compliance, plus visual breakdown of parameters and hostnames.
Text Diff Checker & Code Comparison Tool
Compare two text blocks or code snippets side-by-side or inline with visual highlighting of insertions, deletions, and character modifications.