Web Testing
Browsers, responsive layouts, DevTools, cookies, accessibility and the basics of API testing.
- 01
Cross-browser Testing
The same website can look and behave differently in Chrome, Safari, Firefox and Samsung Internet. Learn why, which browsers to test, what usually breaks, and how to hunt down browser-specific bugs.
30 min beginner
- 02
Responsive Design Testing
One website, every screen from a 320px phone to a 2560px monitor. Learn how viewports and breakpoints work, what to test at each size, and how to find layout bugs with DevTools and real devices.
30 min beginner
- 03
DevTools for Testers
The browser's built-in developer tools are a tester's X-ray. Learn to open them, read the Elements, Console, Network and Application panels, and use them to find and prove bugs.
40 min beginner
- 04
Cookies, Sessions and Storage
How websites remember you with cookies, sessions, localStorage and sessionStorage, what consent banners must really do, and how to test login state, expiry, carts and privacy with DevTools.
35 min intermediate
- 05
Accessibility Basics (WCAG)
Who accessibility is for, how WCAG is organized, the failures testers find most often and exactly how to check each one, with a hands-on lab that lets you experience the web with a keyboard, blurred vision, color filters and a screen reader.
40 min beginner
- 06
Performance Basics
Why speed is a quality issue, what Core Web Vitals mean, and how a manual tester measures, explains and reports a slow page with DevTools, Lighthouse and PageSpeed Insights.
30 min beginner
- 07
Security Basics for Testers
The simple, authorized security checks every manual tester can do on a web app, from access control and login to input handling, data exposure and responsible reporting.
35 min intermediate
- 08
API Testing with Postman
What an API is, how REST requests and responses work, and how to test an API with Postman, from your first GET request to environments, collections and automated checks.
35 min beginner
- 09
API Testing in Depth: Auth, Negative Tests and Data Checks
Go beyond "status is 200". Test tokens and JWTs, 401 vs 403, IDOR and admin access, negative and boundary requests, response schemas, CRUD chains, pagination, rate limits, ETags and versioning, then hunt 8 bugs in a FoodDash API sandbox.
30–45 min intermediate Quick & detailed