Guides & articles
Clear, practical explainers about browsers, displays, graphics, networks and online privacy.
What Your Browser Reveals About You (and What It Doesn't)
A web page can read a surprising amount about your setup with no permission at all — and there are hard limits it cannot cross. Here is exactly where the line sits.
Screen Resolution, DPR and Retina Displays Explained
Why the resolution your browser reports may not match the pixels in the panel, what device pixel ratio really means, and why "Retina" is just marketing for a number you can read yourself.
What Is a User Agent String?
Every request your browser sends carries a strange line of text claiming to be several browsers at once. Here is what it means, why it is full of historical fibs, and why it is slowly being retired.
WebGL, WebGPU and Hardware Acceleration
How the browser hands work to your graphics card, why the GPU name often looks scrambled, and what the newer WebGPU standard changes.
Understanding Your Device's Network Connection
What the browser can tell you about your connection speed and quality, why those figures are estimates, and why it can never show your public IP.
Why Local-Only Tools Are Better for Privacy
When a tool runs entirely in your browser, your data never travels anywhere. Here is what that protects, and the honest trade-off it demands.