Guides, tutorials, and insights on testing web applications with AI agents.
Heavy WebGL Workloads Are Not Supported Yet
Certyn supports self-hosted runners today, but heavy WebGL and GPU-backed browser workloads are not supported yet. Here is what that means and what we plan to add.
The Best Customer CI Setup with Certyn
A practical Certyn deployment model: post-deploy smoke as the gate, environment version updates for traceability, and App Explorer as a non-blocking default-environment follow-up.
Having Fun with Appetize.io
We pointed our AI agent at Appetize.io to see if it could test a native mobile app. Spoiler: it worked.
What's Coming Next
A look at where Certyn is heading — native app testing, device clouds, Chrome extensions, and the bring-your-own-environment model.
Real-World Combined Testing Scenarios
Combine device emulation, network simulation, geolocation, timezones, and more to test realistic user conditions.
Testing on Mobile Devices with Certyn
Use device emulation to test your web app on iPhone, iPad, Pixel, and Galaxy — without owning any of them.
Performance Testing with Browser Metrics
Collect real browser performance metrics to catch slow pages, memory leaks, and layout thrashing before users do.
Testing Dark Mode and Light Mode
Catch contrast issues, invisible text, and broken themes by testing both color schemes automatically.
DOM Inspection for Debugging
Use DOM inspection to extract element properties, computed styles, and HTML structure for precise debugging and validation.
Testing with Slow Networks and Offline Mode
Simulate real-world network conditions to test loading states, error handling, and offline behavior.
Testing Location-Based Features
Override browser geolocation to test store locators, delivery zones, and region-gated content from anywhere.
Testing Across Timezones
Override the browser timezone to catch date/time display bugs, scheduling issues, and timezone conversion errors.
Accessibility Testing with AI Agents
Use the accessibility tree to verify screen reader compatibility, ARIA labels, keyboard navigation, and semantic structure.
From Observations to Bug Reports
How Certyn's observation pipeline turns exploratory findings into verified, actionable bug reports with evidence.
Testing from Your Issue Tracker
Use the Certyn browser extension to test, ask questions, and verify fixes directly from Linear, GitHub, Jira, and other tools.
Automatic Bug Reproduction
When the explorer finds something suspicious, the bug reproducer agent automatically verifies it — turning hunches into confirmed bugs.
Exploratory Testing with AI Agents
Let the AI explorer systematically navigate your app, discover flows, record observations, and surface issues you didn't think to test.
Writing Effective Test Cases
How to write test cases that AI agents can execute reliably — clear instructions, proper tagging, and lifecycle management.
Understanding Test Processes
Learn how Certyn organizes testing into processes — reusable, schedulable bundles that run smoke tests, regression suites, and exploratory sessions.
CI/CD Quality Gates with Certyn
Block bad deploys automatically by adding Certyn quality gates to your GitHub Actions, GitLab CI, or any CI pipeline.
Getting Started with the Certyn CLI
Install the CLI, authenticate, and run your first quality gate from the terminal in under 5 minutes.
