DevPane
Free developer tools that don't suck.
Six precision tools for timestamps, cron, JSON, JWTs, subnets, and DNS.
No accounts. No tracking. Just tools.
Epoch Converter
Convert Unix timestamps to human-readable dates and vice versa
Cron Builder
Visual cron expression builder with natural language
Launching Feb 14
JSON Formatter
Format, validate, and beautify JSON data
Launching Feb 21
JWT Decoder
Decode and inspect JSON Web Tokens
Launching Feb 28
Subnet Calculator
Calculate network ranges and subnet masks
Launching Mar 7
Domain Checker
Look up domain information and DNS records
Launching Mar 14
What's New
Epoch Converter launched — Convert timestamps in 9 languages
Cron Builder coming next — Visual builder + natural language
JSON Formatter coming next — Format, validate, and beautify JSON
Press ⌘K to jump to any tool — or just start typing
100% free · No accounts · Client-side (your data never leaves your browser) · Open-source-friendly · Built by Bluminal Labs