Practical articles on JSON, CSS, Base64, SEO, structured data and more. Each guide pairs real code examples with free tools so you can go from reading to shipping in minutes.
Understand percent-encoding from scratch. Learn which characters need encoding, the difference between encodeURI and encodeURIComponent, and how to handle encoded URLs in fetch and form submissions.
A clear explanation of cryptographic hashing. Covers MD5, SHA-1, SHA-256 and SHA-512 compared, why passwords are hashed not encrypted, and what hash collisions mean in practice.
Learn how minification reduces file size by removing whitespace, comments, and redundant code. Includes before/after examples, minification vs gzip, and how to integrate it into your build process.
A practical guide to generating QR codes. Covers linking to URLs, business cards, menus, and events — plus error correction levels, minimum print sizes, and whether to use short URLs.
Learn how Open Graph meta tags control how your pages look when shared on Slack, Twitter, and Facebook. Covers required tags, og:image size guidelines, Twitter Card differences, and debugging tools.
A practical introduction to regex with real examples. Learn the most useful metacharacters, then apply them to email validation, phone numbers, URLs, and dates — with patterns you can copy straight away.
Understand Unix timestamps from first principles. Learn what epoch time is, how to convert between timestamps and human-readable dates in JavaScript, Python, and PHP, and what the Year 2038 problem means.
A beginner-friendly guide to Base64 encoding. Learn how it works, common use cases like embedding images in HTML, sending binary data in APIs, and how to decode Base64 strings.