Guides
Practical, plain-English guides to files, images, PDFs, security and web tools — how they work and how to get the best results.
Understanding JWT tokens
What a JSON Web Token is, what its three parts do, how the signature keeps it honest, and the security rules that trip developers up — with a decoder to inspect your own.
Read guideHow to remove an image background for free
Automatic background removal has gotten remarkably good — and can now run entirely in your browser. Here’s how it works, when it shines, and how to clean up the edges.
Read guideBase64 encoding explained
What Base64 is, why it exists, where you’ll run into it, and the one thing it is definitely not — encryption. A plain-English guide for developers.
Read guidePNG vs JPG vs WebP: which image format should you use?
A practical guide to the three formats that matter on the web — what each is good at, when to choose it, and how to convert and compress images in your browser.
Read guideWhat makes a password strong (and how to generate one)
Length beats complexity, reuse is the real danger, and why a random generator plus a password manager is the combination that actually keeps your accounts safe.
Read guideHow to compress a PDF without losing quality
Why PDFs get so large, how compression actually works, and how to shrink a PDF in your browser to fit an email or upload limit — while keeping it readable.
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