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DevOps Utilities Tools
Cron, JSON, YAML, regex, redirects — everyday utilities for DevOps and backend engineers.
- Cron Expression Explainer Decode any cron schedule into plain English and preview the next run times.
- JSON Formatter & Validator Beautify, minify and validate JSON with clear error messages.
- YAML ↔ JSON Converter Convert YAML to JSON and back, with clear parse errors.
- Regex Tester Test regular expressions against text and inspect every match and group.
- .htaccess & nginx Redirect Generator Turn a list of old → new URLs into Apache .htaccess and nginx redirect rules.
- Unix Timestamp Converter Convert Unix/epoch timestamps to human-readable dates and back — seconds or milliseconds.
- JSON ↔ CSV Converter Convert a JSON array of objects to CSV and back, with proper quoting and headers.
- Number Base Converter Convert between binary, octal, decimal and hexadecimal — with big-number support.
DevOps Utilities guides
All guides →- Unix Timestamps Explained: Epoch, Seconds vs Milliseconds Epoch time, demystified: what the number really means, the seconds-vs-milliseconds bug that bites everyone, and why timestamps have no timezone.
- 301 vs 302 Redirects: Which to Use (and Why It Matters for SEO) 301 or 302? The wrong choice can quietly tank your SEO. Here's what each redirect means, when to use it, and the chain mistakes to avoid.
- Cron Syntax Cheat Sheet: How to Read Cron Expressions Stop guessing what a cron line does. A quick, practical reference to the five fields, the special characters, and the schedules you'll actually write.
- JSON vs YAML: When to Use Each JSON and YAML describe the same data in very different styles. Here's how they compare, the YAML traps to watch for, and which to reach for when.
- Regex Basics: A Beginner's Guide to Regular Expressions Regular expressions look like line noise until you learn the handful of building blocks. Here's the beginner's path, with examples you can test as you go.
- What Is the CSV Format? Delimiters, Quoting & Pitfalls CSV looks trivial until a comma appears inside a value. Here's how the format really works — delimiters, quoting rules, and the gotchas that corrupt data.
- How Binary Works: Binary Numbers Explained Why computers count in 1s and 0s, how to read a binary number, and how to convert to and from decimal — the foundation under bits, bytes and hex.