Developer Guides
Practical, no-fluff explainers on the concepts behind the tools — encoding, hashing, data formats and more. Each one links straight to a free tool so you can try it immediately.
How to Decode a JWT
Read the header, payload and expiry of a JSON Web Token — and why you should never trust an unverified one.
Read guide →JSON vs YAML: Differences and When to Use Each
Syntax, readability, data types and the trade-offs between JSON and YAML for configs and APIs.
Read guide →What Is Base64 Encoding?
How Base64 turns bytes into text, when to use it, and why it is encoding — not encryption.
Read guide →UUID v4 vs v7: Which Should You Use?
Random vs time-ordered UUIDs, database index locality, and how to pick the right version.
Read guide →URL Encoding Explained: Component vs Full URL
Reserved and unreserved characters, percent-encoding, and when to encode a component vs a whole URL.
Read guide →How to Convert JSON to CSV (and Back)
Turn a JSON array of objects into spreadsheet-ready CSV, handle nested data, and parse CSV back to JSON.
Read guide →MD5 vs SHA-256: Choosing a Hash
Why MD5 and SHA-1 are broken for security, what SHA-256 is good for, and why hashing is not encryption.
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