Free cost calculators, Dockerfile generators, and migration utilities.
18 guides
Look up CNAME records for any domain instantly. See the canonical name target for any hostname. Free, no login required.
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes instantly. Runs in your browser using the Web Crypto API. Nothing is sent to a server.
Validate JSON syntax instantly. Paste your API responses, config files, or package.json to find errors with line numbers and helpful messages.
Decode JWT tokens instantly. View the header, payload, and signature of any JSON Web Token. Runs entirely in your browser — no tokens are sent to a server.
Check MX records for any domain. See mail server hostnames, priorities, and routing. Free, no login required.
Generate MySQL connection strings in URL, JDBC, and DATABASE_URL formats. Special characters in passwords are auto-encoded.
Convert Unix timestamps to human-readable dates and vice versa. See the current epoch time, convert milliseconds and seconds, and format in UTC or local time.
Calculate allowed downtime for any SLA uptime percentage. See how much downtime 99.9%, 99.95%, and 99.99% SLAs allow per year, month, and day.
Encode text to base64 or decode base64 strings instantly. Handles Unicode correctly. Inspect Kubernetes secrets, JWT tokens, and HTTP Basic Auth headers.
Generate and validate cron expressions with a visual editor. Build schedules for cron jobs, GitHub Actions, Kubernetes CronJobs, and more.
Convert JSON to clean, readable YAML. Transform API responses, Terraform output, and data structures into properly indented YAML for Kubernetes and CI/CD.
Validate OpenAPI (Swagger) specifications online. Supports OpenAPI 2.0, 3.0, and 3.1 in YAML or JSON format with detailed error reporting.
Generate PostgreSQL connection strings in URL, JDBC, and DATABASE_URL formats. Includes an AZIN Cloud SQL preset for instant setup.
Generate a robots.txt file with rules for search engine and AI crawlers. Configure user-agent directives, allow/disallow paths, crawl delays, and sitemap references.
Generate cryptographically random v4 UUIDs using the Web Crypto API. Bulk generate up to 50 UUIDs at once with one-click copy.
Format and pretty-print YAML. Normalize indentation, expand inline arrays, and clean up Kubernetes manifests, Docker Compose files, and CI/CD configs.
Convert YAML to pretty-printed JSON instantly. Transform Kubernetes configs, Docker Compose files, and CI/CD pipelines from YAML to JSON.
Validate YAML syntax instantly. Paste your Kubernetes manifests, GitHub Actions workflows, Docker Compose files, or any YAML config to find errors with line numbers.