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toolbox/CI / CD/cron expression builder

Cron expression builder

Five-field cron with next-run preview in your local timezone.

Minute

Hour

Day of month

Month

Day of week

about this tool

Edit any of the five fields and see the expression plus its next five fire times evaluated locally — the same semantics crontab and most CI schedulers use, so no UTC surprises.

Presets cover the common shapes (weekdays 09:00, nightly, every six hours); invalid fields surface immediately.

cron schedule crontab timer

GitLab CI generator SemVer checker

all toolbox tools (37)

toolbox index

Docker

Dockerfile generator
Compose file generator
docker run command builder
Image tag & reference tool
Dockerfile linter
Push / pull troubleshooter

Kubernetes

Manifest validator
Deployment generator
Resource calculator
kubectl command builder
YAML ↔ JSON converter
Troubleshooter playbook

Cloud / AWS

IAM policy validator / generator
ARN builder & parser
cloud-init user-data generator

CI / CD

GitHub Actions generator
GitLab CI generator
Cron expression builder
SemVer checker

Networking

DNS lookup
URL parser
IP / CIDR calculator
Port reference
SSL / TLS checker
cURL command builder
HTTP status explorer

Security

Password generator
Secret scanner
JWT decoder
Hash generator

Utilities

JSON formatter
YAML formatter
Base64 / URL codec
Regex tester
Timestamp converter
UUID generator
AD ↔ BS date converter

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