Secrets
Password generator
Encoding
Base64 encode / decode
Integrity
Hash generator
Identifiers
UUID generator
Formatting
JSON formatter / minifier
Time
Unix timestamp converter
Scheduling
Cron schedule helper
Validate 5-field or 6-field (with seconds) Cron expressions and preview the next run times. Supports lists, ranges, steps, and month or weekday names.
Web
URL encode / decode
Web
Query string ↔ JSON
Config
YAML lint / format
Parses YAML with a real browser parser (js-yaml), then reports structure issues and can re-emit cleaned YAML.
Security
JWT decoder
Security
PEM / certificate decoder
Decodes PEM blocks locally and extracts readable certificate fields when present. Does not validate trust chains.
Network
CIDR calculator
Network
Subnet overlap checker
Logs
Regex tester
Config
Text diff
Web
HTTP status / header helper
Ops
kubectl / docker explainer
Paste a kubectl or docker command to get a plain-language breakdown of common flags and subcommands.