01 // NETWORKING
CIDR & subnet calculator
Inspect IPv4 network and broadcast addresses, host ranges, and whether two ranges overlap.
Open calculator →TOOLS // SMALL UTILITIES
Useful when you need them.
Focused engineering helpers. Calculations and token inspection run locally in your browser; no input is uploaded.
02 // RELIABILITY
SLO & error budget
Translate an availability target into a time budget and understand example alert burn rates.
Open calculator →03 // IDENTITY
JWT & cron inspector
Decode a JWT payload locally or check a standard five-field cron expression and upcoming times.
Open inspector →