Developer Blog
Free guides and tutorials for developers. Learn how the tools you use every day actually work — DNS, JSON, regex, JWT, hashing, image optimization, and more.
14 articles across 7 categories
🌐 Network Tools
📄 Data Formats
What is JSON? Complete Guide with Examples
Learn JSON syntax, data types, formatting, validation, and best practices for APIs.
📖 9 min readUnderstanding Base64 Encoding & Decoding
What Base64 is, how it works, when to use it, and common use cases in web development.
📖 7 min readSQL Formatting Best Practices for Readable Queries
How to write clean, readable SQL with proper formatting, indentation, and naming conventions.
📖 8 min read🔐 Security
Password Security Guide: How to Create & Manage Strong Passwords
Everything you need to know about creating strong passwords, password managers, and 2FA.
📖 10 min readJWT Authentication Explained: How JSON Web Tokens Work
Deep dive into JWT structure, signing algorithms, claims, expiration, and security best practices.
📖 10 min readCryptographic Hash Functions: MD5, SHA-256, SHA-512 Explained
Understand hash functions, their uses in security, and which algorithm to choose for your use case.
📖 9 min read✏️ Text & Code
Regular Expressions (Regex) Beginner's Guide
Learn regex from scratch with practical examples for validation, extraction, and text processing.
📖 12 min readLinux Cron Jobs: Complete Guide to Scheduling Tasks
Learn how to schedule automated tasks on Linux using cron. Covers crontab syntax, expressions, special characters, and real-world examples.
📖 10 min read🖼️ Images & Media
Image Optimization Guide: Compress, Resize & Convert Images
How to optimize images for the web, reduce file sizes, choose the right format, and improve page speed.
📖 8 min readPDF Tools Guide: Merge, Split, Compress & Convert PDFs
Complete guide to working with PDFs — merging, splitting, compressing, and converting to other formats.
📖 7 min read