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Practical guides on image formats, PDF tricks, security, and developer tools. No fluff, no signup, no paywall.
HEX, RGB, HSL, CMYK: every color format explained
Designers and developers work with colors in different formats. Learn what each one means, when to use it, and how to convert between them.
Latest articles
MD5 vs SHA-256: which hash should you use today?
Hashing is everywhere from passwords to file integrity to blockchains. Here is when to use MD5, SHA-1, SHA-256, and why the answer is almost always SHA-256.
UUID v4 explained: a developer's guide to unique identifiers
What UUIDs are, why version 4 became the default, and when to use them instead of auto-increment database IDs.
What is Base64 encoding? (with real-world examples)
Base64 turns any binary data into safe ASCII text. Learn how it works, when to use it, and why it is not encryption.
PNG vs JPG vs WebP: which image format should you use?
A practical breakdown of the three most common web image formats. When to use each, how they compress, and how to pick the right one for your project.