·5 min read
How QR Codes Work: From Invention to Scan
QR codes are everywhere - but what is actually in that grid of squares, and why does a QR code still scan when part of it is covered by a logo?
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Guides and explainers for developers and everyday users.
·5 min read
What Your BMI Score Actually Means (and Its Real Limitations)
BMI is one of the most-used health metrics and one of the most misunderstood. Here is what your score means - and what it cannot tell you.
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URL Encoding Explained: What %20 Means and Why It Matters
Ever seen %20 in a URL and wondered what it means? That is URL encoding. Here is why URLs need it and how to apply it correctly.
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How to Create a Strong Password (and Why Length Matters More Than Complexity)
Most people think replacing letters with symbols makes a strong password. Research says otherwise - here is what actually matters.
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What Is a Unix Timestamp and How Do You Convert It?
If you have seen a 10-digit number in a database or API and wondered what it means, that is a Unix timestamp. Here is everything you need to know.
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How to Format and Validate JSON: A Practical Guide
Minified JSON is efficient for machines but painful for humans. Here is how to format and validate JSON and avoid the most common syntax mistakes.
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What Is Base64 Encoding and When Should You Use It?
Base64 converts binary data into a safe ASCII string. Here is how it works, when to use it, and why it is not a form of encryption.
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