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Developer guides, tutorials, and tips.
SQL Formatter: How to Format and Read SQL Queries
Learn how to format SQL queries for readability, common formatting rules, dialect differences, and how to use SQL formatters effectively.
Timestamp Converter: Working with Unix and Human-Readable Dates
Understand Unix timestamps, how to convert between timestamp formats, common mistakes, and working with dates in JavaScript, Python, and command line.
JSON to YAML Converter: When and How to Convert
Understand the differences between JSON and YAML, when to use each format, and how to convert between them with practical examples.
Hash Generator Guide: SHA256, MD5, and Cryptographic Hashing
Understanding cryptographic hash functions — SHA256, SHA512, MD5 — when to use each, and how to generate hashes in JavaScript, Python, and command line.
URL Encoding Explained: How Percent-Encoding Works
Understand URL encoding (percent-encoding), when to encode and decode URLs, and how to handle special characters in query strings and paths.
UUID Generator Guide: Understanding Universally Unique Identifiers
What UUIDs are, the different versions (v1, v4, v7), when to use each, and how to generate UUIDs in JavaScript, Python, and other languages.
How to Test Regex Patterns: A Developer Guide
Learn how to test regular expressions effectively, match groups, flags, and common patterns. Includes JavaScript, Python, and online testing tools.
Base64 Encoder and Decoder Explained
Learn how Base64 encoding works, why it exists, and how to encode and decode Base64 strings in JavaScript, Python, and command line.
How to Format JSON: A Complete Developer Guide
Learn how to format, validate, and minify JSON data. Covers syntax rules, common errors, and best practices for working with JSON in APIs and configuration files.
What Is a JWT? Understanding JSON Web Tokens
A complete guide to JSON Web Tokens (JWT) — how they work, their structure, common use cases, and how to decode and inspect JWT tokens for debugging.