Comprehensive quality assurance for web applications — cross-browser compatibility, responsive design testing, session management, web-specific performance, and end-to-end functional coverage across every browser your users rely on.
Web application testing is a specialised QA discipline covering the unique quality challenges of browser-based software — from cross-browser rendering differences to session handling, caching behaviour, and responsive layout across device sizes.
Why web applications need specialist testing: Unlike desktop software that runs in a controlled environment, web applications execute inside browsers — each with their own rendering engine, JavaScript engine, caching behaviour, and security model. Your application might work perfectly in Chrome but break in Safari. It might look correct on a 1440px desktop monitor but be unusable on a 375px mobile screen. A button might work on the first click but fail after a session timeout. These are web-specific problems that require web-specific testing expertise.
At 360 Fahrenheit, we test web applications with the full complexity of real-world browser environments in mind. We cover Chrome, Firefox, Safari, Edge, and legacy browsers — on desktop, tablet, and mobile screen sizes — using both manual testing on real devices and automated cross-browser execution via BrowserStack. We test not just whether your application functions, but whether it functions consistently across the full range of browsers and devices your users actually use.
We deliver web application testing to software teams across Pakistan, Saudi Arabia, UAE, UK, and the United States — from early-stage web startups doing their first pre-launch quality check to large enterprise teams validating complex, multi-tenant web platforms before major releases.
We test across the browsers and devices that account for the vast majority of your real users — defined by your actual analytics, not arbitrary selections.
Latest + 2 previous versions. Android Chrome included.
Current release + ESR (Extended Support Release).
macOS Safari + iOS Safari — the most distinct rendering engine.
Chromium-based Edge on Windows 10 and 11.
Chrome and Safari on real iOS and Android devices.
Safari deserves special attention: Safari is consistently the most problematic browser for web developers because it uses Apple's WebKit rendering engine rather than Chrome's Blink. CSS features, JavaScript APIs, and web platform behaviours that work in every other browser sometimes don't work in Safari — or behave differently. For any web application serving users on iPhones or Macs, thorough Safari testing is non-negotiable. Our testers flag Safari-specific issues explicitly in all test reports.
Web application quality covers many dimensions beyond basic functionality — we address each one systematically.
Systematic testing of every significant feature across your full browser matrix — verifying layout rendering, JavaScript behaviour, form handling, file uploads, animations, and interactive components behave consistently across Chrome, Firefox, Safari, and Edge. We document browser-specific issues clearly so your developers can apply targeted fixes without guesswork.
Your web application is tested across the full range of screen sizes — from 320px mobile through tablet breakpoints to large desktop monitors. We verify that responsive layouts don't break at specific viewport widths, that touch targets are appropriately sized on mobile, that content doesn't overflow containers, and that navigation patterns work correctly on small screens.
Web-specific quality checks covering session timeout behaviour, cookie persistence across browser restarts, back button navigation correctness, browser refresh handling, multiple tab behaviour, and state management edge cases. These are the scenarios that users encounter constantly but that developers rarely test because they're not captured in unit tests.
Thorough testing of every form in your application — client-side validation messages, server-side error handling, required field enforcement, input format validation, file upload restrictions, maximum field lengths, and form behaviour under network interruption. Forms are where users interact most intensively with your application and where validation gaps cause the most user frustration.
Evaluation of your web application's perceived performance — page load times, time to first meaningful content, render-blocking resources, image optimisation, and Core Web Vitals (LCP, FID, CLS) that directly affect Google search rankings. We use Chrome DevTools and Lighthouse to identify specific performance improvements with measurable impact.
Systematic checking of all internal links, external links, navigation paths, breadcrumbs, and error states — 404 pages, 500 errors, network timeout handling, and empty state displays. Broken links and unhandled error states damage user trust and SEO rankings. We catch them all before your users do.
We review your web analytics — browser share, device type, operating system — to define a realistic browser and device testing matrix. Testing against your users' actual browser distribution ensures you catch the bugs that matter to your audience, rather than spending effort on edge case browsers that represent 0.1% of your traffic.
We configure BrowserStack or local browser environments to match your agreed testing matrix. For Safari testing on iOS, we use real device cloud environments rather than simulators — iOS Safari behaves differently from macOS Safari and desktop browser emulation is not reliable for mobile web testing. Environment setup is validated before test execution begins.
We execute functional test cases across every browser in the matrix — running the same scenarios in Chrome, Firefox, Safari, and Edge and recording any differences in behaviour, rendering, or functionality. Cross-browser issues are documented with side-by-side comparison screenshots showing the problem browser against the expected rendering.
We test your application at standard responsive breakpoints — 320px, 375px, 768px, 1024px, 1280px, 1440px — and at intermediate sizes to catch layout issues that only appear between defined breakpoints. We also test on real iOS and Android devices for genuine mobile browser behaviour rather than relying solely on desktop browser device emulation modes.
All findings are documented in your defect tracking system with browser/OS/device details, reproduction steps, and severity ratings. Cross-browser issues are tagged with the affected browsers to help developers prioritise fixes. We deliver a web testing summary report covering browser-specific findings, responsive design issues, and performance observations with actionable recommendations.
We recommend testing on at least Chrome, Firefox, Safari, and Edge as a minimum — these four cover over 95% of global browser usage. The priority within this set depends on your specific audience. For applications targeting iPhone users, Safari testing is critical. For enterprise applications used on corporate Windows machines, Edge testing is important. We define your browser matrix based on your actual analytics data, not generic recommendations.
Yes, though they are complementary. Web application testing is the QA discipline — the practice of systematically verifying web application quality through a combination of manual and automated techniques. Web test automation is a specific technique within that discipline — writing scripts to automate test execution. Our web testing service uses both manual and automated approaches as appropriate for each type of test scenario.
Yes — and we specialise in it. Single-page applications built with React, Angular, or Vue.js have specific testing challenges that traditional web testing approaches miss: client-side routing, dynamic DOM updates, asynchronous data loading, and complex state management. Our testers are experienced with SPA-specific testing techniques and know which Playwright and Selenium configurations work reliably for dynamic JavaScript-heavy applications.
Yes. 360 Fahrenheit is based in Lahore, Pakistan and delivers web application testing fully remotely to clients across Pakistan, Saudi Arabia, UAE, UK, and the United States. We access your application through standard web browsers, use cloud-based browser testing platforms for the full device and browser matrix, and deliver all test artefacts digitally. All communication is in English with daily updates during active testing cycles.