DevUtil.dev

A free, privacy-first toolbox with 22 utilities and practical guides. Format JSON/SQL/XML, convert YAML ↔ JSON or JSON ↔ CSV, build cron schedules, preview Markdown, generate UUID v4 & v7 — all in your browser. No login. No uploading tool inputs.

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Deep links into high-demand utilities (dofollow to www.devutil.dev).

JSON Formatter →SQL Formatter →YAML ↔ JSON →JSON ↔ CSV →Cron Generator →Markdown Preview →UUID v4 & v7 →JWT Decoder →

100% client-side processing — tool inputs stay on your device

22 tools spanning formatters, converters, encoders, and generators

Guides for JSON, SQL, cron, and YAML vs JSON workflows