DevOps tools
A focused collection of online DevOps tools for developers, DevOps work, debugging, formatting, conversion, and daily engineering tasks.
Cron Helper
Explain common five-field cron expressions at a glance.
Regex Tester
Test a regular expression against sample text and inspect matches.
Diff Checker
Compare two text blocks and show added, removed, and changed lines.
CIDR Calculator
Calculate network, broadcast, usable range, and address count for IPv4 CIDR.
chmod Calculator
Explain Unix permissions like 755, 644, or rwxr-xr-x.
.env Validator
Check .env files for empty keys, duplicates, and suspicious lines.
Dockerfile Linter
Check a Dockerfile for basic practical mistakes and risky instructions.
JSON Path Tester
Read values from JSON using a simple dot path.
JSON Schema Validator
Validate required fields and basic JSON Schema property types.
MIME Type Lookup
Find common MIME types by extension.
HTTP Status Code Lookup
Look up common HTTP status code meanings.
Nginx Redirect Generator
Generate an Nginx rewrite/return redirect rule.
Nginx Location Matcher Helper
Generate common Nginx location blocks for a path.
Apache htaccess Redirect Generator
Generate Apache RewriteRule redirects.
Docker Compose Validator
Check Docker Compose YAML for common missing fields.
Kubernetes YAML Helper
Inspect common Kubernetes manifest fields and hints.
Terraform Variable Formatter
Turn key=value pairs into Terraform variable blocks.
Prometheus Query Cheat Helper
Generate common PromQL snippets for a metric.
Grafana Loki Query Helper
Generate common LogQL snippets.
Systemd Service Generator
Generate a basic systemd service unit.
Why use this collection
This DevOps collection brings 20 related tools into one fast workspace with stable URLs, localized pages, and direct links to each utility.