Developer Guides & Tool Tutorials

SQL & Database

SQL Formatter Guide: Writing Queries That Are Actually Easy to Review

A one-line query with six joins is unreviewable. Here is how consistent SQL formatting speeds up code review and cuts down on logic bugs.

Alex Developer

July 22, 2026 • 2 min read

Web & Regex Tools

Mastering Regex: A Practical Guide to Building and Testing Patterns

Regular expressions are unreadable until you test them incrementally. Here is a workflow for building a pattern piece by piece instead of guessing.

Alex Developer

July 22, 2026 • 2 min read

Web & Regex Tools

Text Diff Checking 101: Comparing Code and Content Like a Pro

Line-by-line diffing isn't just for git. Here is how to use a diff checker to review config changes, compare API responses, and catch silent edits.

Alex Developer

July 22, 2026 • 2 min read

ID & Password Generators

UUID vs ULID: Picking the Right Unique Identifier for Your Database

UUIDs are the default for a reason, but ULIDs solve a real problem UUIDv4 has in indexed database tables. Here is how to choose.

Alex Developer

July 22, 2026 • 2 min read

SQL & Database

Converting MySQL INSERT Dumps to JSON for APIs, Tests, and Seed Data

Turn raw INSERT INTO statements from a database export into structured JSON you can actually use in code, without spinning up a database.

Alex Developer

July 22, 2026 • 2 min read

Security & Encoding

How to Decode a JWT Safely (Without Pasting It Into a Random Website)

JWTs carry session data, claims, and sometimes more than they should. Here is how to inspect the header, payload, and expiry without leaking a live token.

Alex Developer

July 22, 2026 • 2 min read

JSON & Data Tools

JSON to CSV and Back: Converting Between Data Formats Without a Backend

A practical guide to converting JSON arrays into spreadsheet-friendly CSV, and parsing CSV exports back into JSON for your APIs.

Alex Developer

July 22, 2026 • 2 min read

Security & Encoding

MD5 vs SHA-1 vs SHA-256 vs SHA-512: Which Hash Should You Actually Use?

Not all hash algorithms are equal. Here is when MD5 is still fine, when SHA-1 is a liability, and why SHA-256 is the default for almost everything now.

Alex Developer

July 22, 2026 • 2 min read

JSON & Data Tools

JSON Formatter and Validator: How to Beautify, Debug, and Validate JSON Instantly

Learn how to catch JSON syntax errors, pretty-print nested objects, and validate API payloads in your browser, with no server round-trip required.

Alex Developer

July 22, 2026 • 2 min read

ID & Password Generators

How to Generate Passwords That Actually Resist Brute-Force Attacks

Length beats complexity. Here is the entropy math behind a strong password, and how to generate one without reusing the same weak pattern everywhere.

Alex Developer

July 22, 2026 • 2 min read