DevOps Tools

Fast, free utilities for everyday operations work — cron expressions, CIDR maths, YAML, permissions and certificates. Everything runs in your browser.

12 tools

Cron Expression Parser
Read a cron line in plain English, expand every field, and see the next ten firings in local time and UTC.
Decoder
CIDR / Subnet Calculator
Turn an IPv4 or IPv6 prefix into netmask, broadcast, usable range and host count — then split it, compare it, or aggregate a range.
Network
chmod / Unix Permissions Calculator
Bind permission checkboxes, octal and symbolic modes together — including setuid, setgid, sticky and what a umask leaves behind.
Reference
Uptime & SLA Calculator
Convert an availability target into allowed downtime per day, month and year, track the error budget, and chain several services together.
Calculator
Kubernetes Resource Converter
Convert CPU and memory quantities between every suffix Kubernetes accepts, and catch the ones that mean a billion times what you meant.
Converter
YAML ↔ JSON Converter
Convert either way with key order and comments-free fidelity, then see every scalar whose written form and parsed value disagree.
Converter
.env File Converter
Parse a dotenv file the way real readers do — quoting, escapes, comments — and retype it as JSON, YAML, docker flags, Compose, a Secret or a ConfigMap.
Converter
htpasswd Generator
Build Apache basic-auth lines with bcrypt, $apr1$, {SHA} or plain text, verify an existing hash, and collect several users into one file.
Generator
docker run to Compose Converter
Turn a docker run command into a Compose service — with every flag either translated or listed with the reason it could not be.
Converter
Certificate & CSR Decoder
Read an X.509 certificate, a chain or a signing request — subject, SANs, validity, key, extensions and fingerprints, all decoded in your browser.
Decoder
PII Sanitizer
Strip emails, phone numbers, card numbers, IPs, SSNs, API tokens — or anything your own regex matches — out of a log before you share it.
Text
cURL Command Generator
Build a curl command from a URL, headers and a body — correctly quoted for bash, PowerShell or cmd, with the fetch() equivalent beside it.
Generator