ToolWrenWhat Is Base64 Encoding? A Plain-English Guide
Base64 explained simply: what it is, how it works, when to use it, and why it is encoding — not encryption. With worked examples.
How to Decode a JWT (and What Each Part Means)
A step-by-step guide to reading JSON Web Tokens: the header, payload and signature, what the standard claims mean, and how to check expiry safely.
HEX vs RGB Color Codes: What's the Difference?
HEX and RGB describe the same colours in different notations. Learn how each works, how to convert between them, and when to use HSL or alpha.
How to Calculate BMI (and What the Number Really Means)
The BMI formula explained with worked examples in metric and imperial, the standard categories, and the important limitations of BMI.
Unix Timestamps Explained (Seconds, Milliseconds and the Year 2038)
What a Unix timestamp is, why it starts in 1970, the difference between seconds and milliseconds, and what the Year 2038 problem actually is.
How to Create a Strong Password (Length Beats Complexity)
Why password length matters more than special characters, how passphrases work, and how to generate and manage strong, unique passwords.