Selenium Load Testing: What One Browser User Costs
Selenium load testing, measured: 20 headless Chrome users took 12.1 GiB and ran slower than 5, while k6 simulated 1,000 users in 296 MiB. When browsers belong.
Test Automation
Test automation guides cover writing and debugging automated tests. You'll find Selenium WebDriver how-tos in Java, from locating elements and XPath to waits, dropdowns, proxies and screenshots, how to debug mobile HTML5 and native apps and their traffic, what HTTP requests look like on the wire, and how to write a test plan that a team will follow.
60 articles
Cloud Testing vs Local Testing: Which Method Is Best?
Explore a detailed comparison of cloud testing vs local testing for mobile performance testing. Learn which approach fits your needs in 2026.
How to Optimize Mobile API Performance: A Practical Guide
Optimize mobile API performance: shrink payloads, paginate, cache, compress, cut chatty calls, refresh tokens safely and test on slow networks.
Load Testing vs Stress Testing: Key Differences and When to Use Each
Load tests verify how your system behaves under expected traffic. Stress tests push past it to find the breaking point.
Mastering JavaScript for Performance: A Practical Guide
Cut JavaScript main-thread blocking: long tasks, INP, defer and async, code splitting, yielding and web workers, plus what a backend load test does not measure.
What Is Smoke Testing in Software Testing?
Smoke testing verifies that a build's critical paths work before deeper testing starts. How it differs from sanity and regression testing, with examples.
Unit Testing vs Functional Testing: Differences & Similarities
Unit tests check a piece in isolation; functional tests check behaviour a user would notice.
Batch testing in Software Testing
Batch testing groups related cases into one run, which cuts setup cost and shortens feedback.
Contract Testing Guide: Definition, Process, and Examples
Contract testing checks that a provider and consumer still agree, without running both together.
How To Improve User Experience Using Synthetic Monitoring
Synthetic monitoring runs a scripted journey on a schedule, so you find failures before users report them.
Chromium vs Chrome in 2026: Understanding the Differences and Choosing the Right Browser
Chromium is the open-source base; Chrome adds proprietary codecs, auto-update and Google services.
How to Speed Up Your WordPress Site in 2026 (Ultimate Guide)
Caching and image optimisation deliver most of the available gain on WordPress.
How are Parameters Sent in an HTTP POST Request?
HTTP POST parameters travel in the request body, and the Content-Type header (form-urlencoded, multipart or JSON) tells the server how to parse them.
What is WebdriverIO? Unlock the Secrets of Automated Testing
WebdriverIO drives both browsers and mobile apps through the WebDriver protocol. Choose it when you need one framework across web and mobile.
What Is Puppeteer? – A Tutorial on How to Use Puppeteer
Puppeteer controls headless Chrome and suits scraping, PDFs and screenshots as much as testing.
What is JSON Schema? A Step-by-Step Guide!
It turns API documentation into something machine-checkable in tests. Start with required fields and types; add constraints once the basics hold.
How to Fix Slow Loading Pages: 6 Practical Tips to Improve Site Speed
Measure before optimising. Most slow pages have one dominant cause, not six small ones.
Contextual Documentation: Revolutionizing User Onboarding with LoadFocus
Dive into LoadFocus's enhanced user experience with contextual documentation. Streamline your onboarding and understand metrics with in-app guidance.
Flaky Tests in Software Testing: Causes, Identification, and Best Practices
A flaky test is worse than no test, because it trains the team to ignore red builds.
Why you should start improving the images on your website
Images are usually the largest thing on a page and the easiest to fix. Modern formats and correct dimensions cut weight without visible quality loss.
How to Monitor Core Web Vitals for your Website with Alerts and Reports
Scheduled checks turn Core Web Vitals from an occasional audit into a trend you can act on.
How to Monitor the SEO of your Website
SEO monitoring catches silent breakage: a noindex shipped by accident, or a redirect chain.
How to Improve your WordPress Performance Score
Caching plus image optimisation covers the majority of the available gain. Audit plugins periodically. Each one adds queries and assets to every page.
Cypress: The Web Testing Framework of the Moment
Cypress runs in the browser alongside your app, which makes debugging far more direct.
Using Selenium IDE Record and Playback tool
Selenium IDE is the fastest way to capture a journey, and the worst way to maintain one. Use it to draft a test, then export and clean up the locators.
Using TestCafe for End to End Testing
TestCafe runs without WebDriver, which removes most of the setup friction. End to end tests are expensive, so keep them to the journeys that matter.
Chrome Extension for Google Lighthouse as a service
Running Lighthouse from an extension gives you an audit without leaving the page you are testing.
What is First Meaningful Paint (FMP)?
FMP tried to capture when the main content appeared, rather than the first pixel. Use LCP for anything current; FMP appears mainly in older reports.
End to End Testing for Asos.com using TestCafe in Under 30 minutes
TestCafe needs no WebDriver, which is why a working suite is possible in half an hour.
Best Practices for Implementing E2E (End-to-End) UI Tests
E2E tests earn their cost only on the journeys that make money; everything else belongs lower in the pyramid.
Building your in house Device Farm on Mac OS using OpenSTF for Android Testing
OpenSTF gives you remote access to real Android devices, which emulators cannot fully replace.
How to Design Effective Load Testing Scenarios
How to design load testing scenarios: set pass/fail goals, build a workload model from real traffic, add think time and test data, then choose the load profile.
How to Click on Element with Puppeteer and Chrome
Puppeteer's page.click does not wait for the selector and throws if it is missing; wait with waitForSelector or use a locator that waits for a visible element.
Mocking APIs using WireMock for testing negative cases when it is not possible to change the API behaviour
WireMock lets you produce failures a real API will not give you on demand: timeouts, 500s, malformed bodies.
Structuring integration tests using JUnit categories by features, API or type of tests
Categories let one suite be sliced by speed or area, so CI can run the fast set per commit.
How to Visually Compare Staging vs. Production Websites Automatically
Compare the same viewport and state, or the diff is dominated by noise. Review differences rather than gating on pixel equality, which fails constantly.
Visual UI Regression Testing with Jest, Puppeteer and Headless Chrome
Image comparison catches visual breakage that assertions never check for. Run in a consistent environment; a different OS produces different pixels.
How to Click a Link by Text in Selenium WebDriver Java
linkText matches the full visible text; partialLinkText matches a substring.
How to Take Screenshots with Puppeteer using Headless Chrome Browser
Puppeteer captures viewport, full-page or single-element screenshots.
Screenshot Comparison Tools
Pixel comparison catches visual regressions that functional tests never assert on. Set a tolerance, or antialiasing and fonts will fail every run.
How to Make a Recording of your Native Application for Demo or Debugging purposes
A screen recording captures the exact sequence that reproduces a bug, which a description rarely does.
How to Debug ES6 in WebStorm with Babel
Debugging transpiled code needs source maps, or breakpoints land on the wrong lines.
Debugging the Traffic from a Native iPhone Application
A proxy between the device and the network is the only reliable way to see native app traffic.
How to Use the DataProvider in TestNG with a JAVA Example
A DataProvider feeds many input sets into one test method, which keeps cases out of the code.
How to Open a New Tab using Selenium WebDriver with Java?
Open a new tab in Selenium WebDriver with Java: Selenium 4's switchTo().newWindow(WindowType.TAB), Ctrl+click on a link, and switching between tabs by handle.
How to Send an Android Application to Background and Reopen It
Backgrounding and resuming is where state bugs surface, so it belongs in the test suite. Verify state after resume, not just that the app reopened.
How to use Explicit and Implicit Waits in Selenium WebDriver with Java
Explicit waits target a condition; implicit waits apply a blanket timeout to every lookup.
How to find by XPath text that contains apostrophe (single quote) in Selenium WebDriver
Wrap the literal in double quotes instead, which is the simplest fix. Use concat() when the text contains both quote characters.
Find all the Links on a Webpage with Selenium WebDriver in Java
Find all links on a page with Selenium WebDriver in Java: findElements(By.tagName("a")), filtering hrefs, checking status codes and avoiding stale elements.
How to MouseOver (Hover) a WebElement using Selenium WebDriver
Hover needs the Actions class; a plain click will not trigger CSS or JS hover states.
How to Select a Dropdown in Selenium WebDriver using Java
Use the Select class for real select elements, and normal clicks for custom widgets.
How to scroll web page UP or Down using Selenium WebDriver?
Selenium 4.2+ scrolls natively with wheel actions (scrollToElement, scrollByAmount); the JavaScript executor scrollBy and scrollIntoView work in every version.
How to find the XPath of your Selenium WebDriver test using Chrome browser?
Chrome DevTools can copy an XPath, but the generated one is usually position-based and brittle.
How to get all the options in a select tag using Selenium Webdriver
The Select class exposes getOptions() for real select elements. Assert on the option text or value, not the count alone, which passes on the wrong list.
How to Clear Local Storage using Selenium WebDriver?
Clearing cookies does not clear local storage, so state survives between tests. Execute localStorage.clear() through the driver's JavaScript executor.
How to take screenshots with Selenium WebDriver
Screenshots on failure turn an unhelpful stack trace into something you can diagnose. Name files by test and timestamp or you cannot match them to runs.
How to Pass Traffic Through a Proxy with Selenium WebDriver
A proxy lets you inspect, record or modify the traffic a browser test generates. HTTPS needs the proxy certificate trusted or every request fails.
How to Debug Mobile HTML5 and Native Applications?
HTML5 apps can be debugged with remote browser tooling; native apps need a proxy or device logs.
How to write a good Test Plan?
A test plan is about scope and risk: what you will not test matters as much as what you will.
How to Locate Web Elements with Selenium WebDriver?
Locate web elements in Selenium 4 with the Java By class: id, name, CSS, XPath and relative locators, with tested code and what selenium.dev recommends.
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