Free browser-based tools for DevOps engineers.

• Cron Expression Builder: Visually build and validate cron expressions. Get plain-English explanations, next run times in your timezone, and platform-specific output for Linux, AWS, GitHub Actions, and Kubernetes.
• CIDR Calculator: Calculate subnet details, usable hosts, and network ranges. Split CIDRs, plan AWS VPC layouts, and copy any value with one click. Supports IPv4 and IPv6.
• JSON Formatter: Format, validate, and minify JSON with syntax highlighting.
• JWT Decoder: Decode and inspect JWT tokens without sending them to any servers.
• Base64 Encoder: Encode and decode Base64 strings and files instantly.

All tools run entirely in your browser, ensuring privacy and instant results. OpsBash offers a completely free, ad-free, and paywall-free experience for engineers, with no sign-up or installation required. Works offline for maximum convenience.