Master Selenium Test Automation
Lessons, recipes, quizzes and interview prep with every example in Java, Python, JavaScript, and C#. Verified against Selenium 4.48.0: from your first test to WebDriver BiDi and Grid on Kubernetes.
Selenium 4.48.0 · 27 Aug 2026
BiDi protocol layers generated from a shared schema; Grid file transfer for Kubernetes, Docker and relay sessions
- 27 Apr 2026
.NET assemblies are now strongly signed
- 4 Apr 2026
Selenium Grid Docker images mirrored to GitHub Container Registry
- 10 Mar 2026
Chrome moves to two-week releases
Content verified against Selenium 4.48.0 on 9 Sept 2026. Minimums: Java 11+, Python 3.10+.
Selenium in 2026
The topics that did not exist when most Selenium tutorials were written.
WebDriver BiDi
Console errors, auth, DOM events and preload scripts across browsers.
Network interception
Block, modify and mock requests without a proxy.
Selenium vs Playwright vs Cypress
The honest 2026 comparison and how to decide.
Grid on Kubernetes
Native Pods, session events, Redis state, failure-only video.
AI-assisted testing
What works, what to avoid, and the guardrails.
Migrating from Selenium 3
Capabilities, Duration timeouts, Service objects, checklist.
Copy-paste recipes
Stale elements, downloads, basic auth, mocking, hover menus, cookie banners. One problem, one working solution, four languages.
Interview questions with answers
Junior to senior plus scenario questions, each linked to the lesson that goes deeper, and live-coding challenges to practise on.
Quiz questions and debugging challenges
Twelve quizzes across every chapter with saved best scores, and ten broken tests to fix with progressive hints.
Learning Path
67 lessons in 10 chapters, from first test to WebDriver BiDi
Setup & Basics
- Getting Started with Selenium
- Browser Options & Configuration
- Finding Elements
- Project Structure
- +3 more
Locators & Navigation
- ID, Name, and Class Locators
- CSS Selectors
- XPath Basics
- XPath Advanced Techniques
- +2 more
Actions & Interactions
- Click and Type
- Forms and Inputs
- Dropdowns and Select Elements
- Drag and Drop
- +3 more
Waits & Synchronization
- Implicit Waits
- Explicit Waits
- Fluent Waits
- Expected Conditions
- +2 more
Advanced Features
- iFrames and Frames
- Windows and Tabs
- Alerts and Popups
- File Uploads
- +5 more
Design Patterns
- Page Object Model
- Page Factory
- Data-Driven Testing
- Screenplay Pattern
- +1 more
Frameworks & Integrations
- TestNG and JUnit Integration
- pytest Integration
- Mocha and Jest
- Cucumber and BDD
- +5 more
Debugging & Best Practices
- Debugging Tips
- Screenshots and Videos
- Common Errors
- Flaky Tests: Diagnosis and Cure
- +1 more
Performance & Scaling
- Parallel Execution
- Selenium Grid
- Headless Browsers
- Grid on Docker and Kubernetes
- +2 more
Selenium 4, BiDi & Beyond
- What's New in Selenium 4
- Migrating from Selenium 3 to 4
- WebDriver BiDi
- Network Interception with BiDi
- +3 more
Everything you need to master Selenium
Structured learning path with practical examples and hands-on practice
Multi-Language Examples
Every tutorial includes code in Java, Python, JavaScript, and C#. Switch languages with a single click.
Best Practices
Learn patterns that scale. Every example is tagged with robustness ratings so you know what works in production.
Quizzes That Remember
A quiz for every chapter. Your best score is saved locally so you can see where to revise.
Challenges & Interview Prep
Fix real broken tests with progressive hints, then rehearse junior-to-senior interview questions with model answers.
Printable Cheat Sheet
Quick reference for all Selenium commands. Print it, bookmark it, or keep it on your second monitor.
Current, Not Copied
Verified against the latest Selenium 4.4x release. BiDi, Selenium Manager, Kubernetes Grid and the Selenium 5 roadmap, not 2019 tutorials.
Frequently Asked Questions
Quick answers to common questions
What programming languages are covered?
All tutorials include code examples in Java, Python, JavaScript (with Selenium WebDriver), and C#. You can switch between languages with a single click.
Is this suitable for beginners?
Yes. Chapter 1 starts with installation, how WebDriver works and your first test. Each chapter builds on the last, and the quizzes let you check understanding as you go. Senior engineers will find the BiDi, Grid, patterns and interview sections go deep.
Does this cover Selenium 4?
Yes. Content is verified against the current Selenium 4.4x releases and covers Selenium Manager, relative locators, WebDriver BiDi, Kubernetes-native Grid and the Selenium 5 roadmap. Every example is tagged with version compatibility.
Is this free?
Yes, completely free. All tutorials, quizzes, challenges, and the cheat sheet are available without any registration or payment.