Security & Privacy
You don't need to be a security expert to avoid the most common ways people get compromised — reused passwords, missing second factors, and files that quietly carry private data. A few good habits cover the vast majority of the risk.
These guides focus on the practical steps that actually matter, explained clearly, with tools to help you put them into practice.
Guides in this topic
How to Create and Manage Strong Passwords
What actually makes a password strong, why length beats complexity, how attackers really crack passwords, and practical habits like password managers and 2FA.
Two-Factor Authentication (2FA) Explained
What two-factor authentication is, why a password alone isn't enough, how authenticator apps and hardware keys work, and which method to choose.
Other guide topics
Data Formats & Encoding
Guides to the formats and encodings that move data around the web — JSON, XML, YAML, CSV, Base64, URL encoding, and character sets.
Text & Writing
Guides for working with text — case conventions, word counts and readability, URL slugs, cleaning up messy text, and character encoding.
Images & Media
Guides to working with images for the web — compression, choosing formats, resizing and cropping, and the metadata hidden inside photos.
PDF & Documents
Guides to editing and organizing PDF files — merging, splitting, compressing, and converting — all without uploading your documents.
Web & Developer
Guides to the building blocks of web development — JWTs, timestamps, HTTP status codes, regular expressions, and color formats.
Device & Hardware Testing
Guides to checking your hardware — screens, keyboards, mice, cameras, microphones, and sensors — with browser tests that need no installation.