Manual Testing Articles

A cross-browser difference only means something when the browser is the only thing that changed. Here is how to run a controlled sweep in one live session.

Naima Nasrullah

September 30, 2026

9 min read

Chrome Beta ships over a month before Stable. Here is how to test your site on a beta browser version in a live session and catch breaking changes early.

Naima Nasrullah

September 30, 2026

11 min read

Learn the POUR framework behind WCAG, Perceivable, Operable, Understandable, Robust, with real tester scenarios for catching accessibility bugs before users do.

Pricilla Bilavendran

August 31, 2026

5 min read

Learn how to write test cases effectively with a field-by-field walkthrough, real examples, weak vs. strong steps, and a ready-to-use template.

Bhawana

August 14, 2026

28 min read

A practical checklist of test cases for search functionality: positive, negative, boundary, engine behavior, autocomplete, results, filters, and automation.

Salman Khan

August 9, 2026

5 min read

A bug bash is a timeboxed session where the whole team hunts defects together. Get the agenda, roles, charters, bug report template, and triage matrix.

Harshit Paul

August 6, 2026

5 min read

Set a custom user-agent string in Chrome DevTools, Selenium, and Playwright, and see why spoofing the string alone never changes how a page renders.

Naima Nasrullah

July 14, 2026

5 min read

Confirmation testing means retesting a fix to confirm the bug is gone. Learn how it differs from regression testing and how to verify a fix across browsers.

Naima Nasrullah

July 1, 2026

5 min read

Test a banking application across every browser before release. Build the coverage matrix, run real-time checks on login and transfers, and catch bugs early.

Shubham Soni

July 1, 2026

5 min read

Test whether your site breaks when users run ad blockers. See what fails, which blockers and browsers to check, and how to test it live across browsers.

Shubham Soni

July 1, 2026

5 min read

A bug that only appears in one browser is useless until you recreate it. Learn to reproduce browser-specific bugs in the exact configuration and verify the fix.

Naima Nasrullah

June 30, 2026

5 min read

Dive deep into the world of SDLC and STLC with this comprehensive guide. Understand their phases, differences, and integration strategies to improve your software development process and ensure quality.

Poornima Pandey

September 17, 2025

18 min read

Learn the key differences in bugs vs defects with examples, and discover how understanding them improves software quality, testing, and team efficiency.

Abhishek Mishra

September 15, 2025

26 min read

Explore software testing and quality assurance: learn how testing finds defects and QA ensures reliable processes for top-quality software.

Nandini Pawar

September 15, 2025

27 min read

Learn how to create an effective Test Strategy Document with key components, examples, and best practices to improve test coverage and product quality.

Learn the 7 Principles of Software Testing with real-world examples in this complete guide. Improve QA processes, ensure quality, and deliver faster software

Prince Dewani

August 28, 2025

14 min read

Discover the 9 best cloud testing tools in 2026, from real-device clouds to load and API testing, with key features and tips to choose the right one.

Himanshu Sheth

August 19, 2025

18 min read

Kickstart your software testing career in 2026 with the top free software testing courses for beginners. Learn manual and automated testing skills to succeed.

Saniya Gazala

March 3, 2025

14 min read

Remote testing can be very challenging, we have compiled a list of all the key challenges of software testing and the tricks to overcome those challenges of working remotely.

Praveen Mishra

February 21, 2025

20 min read

Discover the top 13 QA manager skills that blend technical and non-technical traits, helping you lead teams effectively and ensure quality in Agile development.

Arnab Roy Chowdhury

February 20, 2025

24 min read

Agile testing breaks down over changing requirements, flaky tests, and short sprints. Here are 14 challenges in Agile testing and how to avoid each one.

Jay Singh

February 18, 2025

21 min read

Explore the top 10 most-liked videos of 2024 on the TestMu AI (Formerly LambdaTest) YouTube Channel!

Kavita Joshi

February 6, 2025

11 min read

13 tools for JavaScript developers, from Sublime Text, npm, and Webpack to ESLint, Mocha, and Jenkins, with what each does and how AI is changing them.

Shravan Mahajan

January 30, 2025

14 min read

Cyclomatic complexity counts the independent paths through a program's control flow, showing how many test cases the code needs and how hard it is to maintain.

Nazneen Ahmad

December 17, 2024

18 min read

Learn how to optimize cycle time in software development, improve workflow efficiency, and reduce bottlenecks for faster, high-quality releases.

Nazneen Ahmad

December 13, 2024

21 min read

Learn the key differences between quality assurance vs quality control in software development, and how QA and QC work together to ship high-quality products.

Zikra Mohammadi

November 26, 2024

14 min read

A web application testing checklist covering functional, UI, performance, security, and accessibility testing to ship a reliable, high-quality web app.

Zikra Mohammadi

October 3, 2024

35 min read

Functional testing checks what software does against its requirements. Non-functional testing checks how well it performs on speed, security and usability.

Veethee Dixit

October 1, 2024

10 min read

Learn black-box, white-box, and experience-based software testing techniques, with boundary tests run on a real form and a worked MC/DC coverage example.

Nazneen Ahmad

May 16, 2024

31 min read

This blog on sanity testing vs regression testing highlights the key differences between sanity and regression testing with examples and best practices.

Nazneen Ahmad

May 16, 2024

26 min read

Alpha testing is run internally by the development team; beta testing is run by real users outside it. Compare goals, testers, environments, and criteria.

Nazneen Ahmad

May 13, 2024

21 min read

Perform UI testing to identify common UI bugs, fix them effectively, and deliver better UI web applications.

Confused between smoke testing vs sanity testing? This blog dives into the differences & helps you choose the right testing approach.

Nazneen Ahmad

March 26, 2024

22 min read

The test plan creates the project-specific roadmap, while the test strategy sets the direction for testing. Learn more about test plan vs test strategy.

Nazneen Ahmad

March 18, 2024

38 min read

AI debugging uses LLMs and AI agents to parse logs, surface root causes, and suggest fixes. Learn how it works, where it falls short, and the proven debugging practices that still matter.

Saif Sadiq

March 7, 2024

10 min read

Learn about bug severity and priority and understand its differences, guidelines, and real-time examples. Explore insights on bug reports and more.

Nazneen Ahmad

February 20, 2024

34 min read

Explore main SDLC models like Waterfall, Agile, and more. Optimize software development success by choosing the right model.

Nazneen Ahmad

February 12, 2024

43 min read

The 15 core types of software testing, what each one verifies, when to run it in your pipeline, and which to automate. With a decision guide.

Himanshu Sheth

February 1, 2024

34 min read

Check out our top 10 most-viewed YouTube videos of 2023 from the TestMu AI (Formerly LambdaTest) YouTube Channel.

Kavita Joshi

January 22, 2024

14 min read

Revisit TestMu AI's 10 most-read articles of 2023, from React Virtual DOM and monkey patching in Python to Cypress vs Playwright and installing Appium.

Devansh Bhardwaj

January 19, 2024

19 min read

Learn what test data management is, how masking, subsetting, and synthetic data work, and how to build a TDM strategy that keeps automated tests compliant.

Abhishek Mishra

December 29, 2023

18 min read

Safari Developer Tools are a built-in suite for designing, testing, and debugging websites in Safari, similar to the developer tools in Chrome or Firefox. They include an Elements Inspector, Console, Network panel, JavaScript Debugger, Responsive Design Mode, and the safaridriver WebDriver, letting testers inspect HTML and CSS, debug scripts, and automate cross-browser checks directly in Safari.

Salman Khan

December 15, 2023

27 min read

Supercharge your testing prowess with must-have utility tools for testers. Explore a comprehensive collection of powerful tools designed to streamline testing.

Prince Dewani

November 27, 2023

59 min read

Fastening the test cycle is simpler when you bring in the approach to the table. How do you do that? Read our latest blog on how to speed up testing cycle.

Shubham Saxena

August 9, 2022

29 min read

A test environment is a controlled hardware and software setup for running test cases before deployment. Covers elements, types, and best practices.

Swastika Yadav

July 26, 2022

19 min read

Learn how to write a bug report that developers act on fast. Covers key components, real examples, a ready-to-use template, do's and don'ts, and expert tips.

Arnab Roy Chowdhury

May 30, 2022

24 min read

Web application testing checks a browser-based app across browsers, while mobile application testing checks an installed build on real iOS and Android devices.

Mayank Bhola

May 26, 2022

21 min read

Moving from manual to automation testing means replacing repetitive, error-prone manual execution with scripted tests that run across multiple devices, browsers, and operating systems at speed, addressing the 32% of software project failures Statista attributes to insufficient testing time. Defining a realistic scope, since 100% automation is a myth, determines what to automate and what to leave manual.

Shahzeb Hoda

December 9, 2021

31 min read

A detailed guide which talks about the importance of cross browser testing on older browser versions and the ways in which you can test on older browsers.

Harshit Paul

July 23, 2020

16 min read

Learn what automated functional testing is, which functional test types to automate, key techniques, and best practices to release reliable web apps faster.

Harshit Paul

June 26, 2020

10 min read

A UI test plan sets the scope, approach, resources, and schedule for UI testing. Learn to write the plan, test scenarios, test cases, and test scripts.

Harish Rajora

May 13, 2020

20 min read

Collaboration between developers and testers is crucial to deliver your web application on time. Find 7 ways to achieve it, from shift-left testing to QAOps.

Praveen Mishra

February 26, 2020

12 min read

From automated browser testing to starting your own blog, here are some of the most interesting and intriguing new year resolutions for every website tester to aim in 2020.

Nikhil

January 14, 2020

19 min read

Code coverage measures how much source code your tests execute. Test coverage measures how much of the requirements and user flows your tests check.

Himanshu Sheth

December 18, 2019

28 min read

Wondering if your role as a functional tester is restricted to only testing? Here are 13 ways for you to add more value to SDLC, apart from functional testing.

Ramit Dhamija

November 29, 2019

20 min read

QAOps applies a DevOps mindset to quality assurance, moving automated, parallel, and scalable testing into the CI/CD pipeline. Learn its lifecycle and practices.

Praveen Mishra

November 20, 2019

26 min read

Here are 17 excuses which are often made by website testers to save themselves from the trouble, without realizing how careless these excuses portray them.

Veethee Dixit

July 30, 2019

23 min read

Verification checks a website against its spec through static reviews; validation runs the finished product through dynamic tests for real users.

Arnab Roy Chowdhury

May 6, 2019

21 min read

Set up a cross browser testing environment: pick target browsers, run other OSes in VMs, add mobile emulators, debug in DevTools, or use a cloud grid.

Harish Rajora

April 22, 2019

23 min read

WordPress browser compatibility breaks in templates, layouts, plugins, and typography. A screenshot plugin captures full page renders across real browsers.

Harshit Paul

February 15, 2019

5 min read

Ensure browser compatibility with our WordPress plugin by running full paged automated screenshots of WordPress pages on 2000+ real browsers on various devices.

Harshit Paul

February 15, 2019

11 min read

The pressure of working under a fast-paced Agile environment, leads to many mistakes in website testing. Here are 24 most common things that we forget to test.

Arnab Roy Chowdhury

February 14, 2019

25 min read

As a QA Lead setting goals for test department becomes very challenging yet critical at the same time. Here are some powerful tips to help you with it.

Himanshu Sheth

January 29, 2019

17 min read

Code review should not only involve developers but QAs and product managers too. Here we look into the code review best practices, ways & objective of the same.

Arnab Roy Chowdhury

January 28, 2019

20 min read

Manual cross browser testing takes a lot of time. These 34 ways reduce that effort, covering linting, CSS profiling, parallel testing, and visual comparison.

Harshit Paul

December 13, 2018

32 min read

Exploratory testing has no predefined test cases, so testers face the oracle problem, thin documentation, and flaky results. Here is how to fix each one.

Akshay Pai

November 28, 2018

17 min read

Exploratory testing is a black box technique where testers learn, design, and run tests at once. Learn its types, process, pros and cons, and common myths.

Garima Tiwari

November 26, 2018

16 min read

Software tester skills run from analytical thinking and defect reporting to automation and cross browser testing. Learn the 17 skills effective testers build.

Akshay Pai

November 19, 2018

16 min read

Testing validates whether software works as intended, while debugging is the manual process developers use to fix issues testing surfaces, tracked through a bug life cycle running from New and Assigned through Open, Retesting, and Closed. Effective debugging means prioritizing bugs by impact, recognizing HTTP error codes like 404 and 502, and reproducing each bug before fixing it.

Akshay Pai

November 13, 2018

5 min read

Software development is advancing by the minute. With a plethora of technological advances, developing software has become simplified. Every SDLC(Software Development Life Cycle) is aided with the help of debugging and testing.

Akshay Pai

November 13, 2018

18 min read

Testing single-page AngularJS applications relies on a stack of complementary tools: Karma, the Angular team's own test runner that ships by default with the CLI and integrates with Jenkins or CircleCI, Jasmine for behavior-driven unit tests, Mocha, and Protractor for browser automation. Effective coverage combines these frameworks with cross-browser compatibility, visual regression, and accessibility testing.

Arnab Roy Chowdhury

November 1, 2018

9 min read

Testing Progressive Web Apps verifies that a site meets Google's three core PWA criteria - reliability, speed, and an engaging experience - checking that service workers cache content for offline use, pages load fast, and features like home screen installation work correctly across browsers and devices.

Akshay Pai

October 25, 2018

14 min read

Parallel testing runs automated tests on many applications, or many parts of one application, at the same time using a virtual machine and a cloud-based testing server, instead of executing them one after another. This cuts testing time dramatically while covering the same browser and OS combinations without added cost or effort.

Arnab Roy Chowdhury

October 9, 2018

8 min read

A copy-paste bug report template for manual testing, plus a mobile app UI testing checklist and the bug lifecycle from discovery to closure.

Arnab Roy Chowdhury

October 4, 2018

9 min read

Every microservice exposes its own API, so one weak endpoint can open the whole system. See the main risks, the six test types, and how to check each service.

TestMu AI

September 26, 2018

8 min read

Adoption of DevOps and Agile has been one of the biggest trends to be seen in 2017 in the testing domain. A rising trend in the domain of automation testing is leading to more systems being developed in every minute. With the development of information technology, the testing domain is also changing.

Arnab Roy Chowdhury

September 25, 2018

9 min read

Web application testing challenges include cross browser compatibility, responsiveness, security, and performance. Learn 16 challenges and how testers solve them.

Shubham Saxena

September 19, 2018

9 min read

Usability testing checks whether real users can use your website effectively. Popular methods, the step-by-step process, and the key benefits explained.

TestMu AI

September 18, 2018

12 min read

Usability testing breaks down when planning, screening, or facilitation slips. Learn 13 common usability testing mistakes and how to avoid each one.

Arnab Roy Chowdhury

September 14, 2018

9 min read

Staging environment is something which is suggested as best practice but considered as a burden. Many of us feel pounded with the thought of extra investment and effort involved to upkeep it. It happens very often that a company in spite of having a Staging environment ends up failing in reaping proper results from it

Harshit Paul

September 13, 2018

14 min read

A dedicated staging environment lets QA teams catch bugs safely before release. Learn why it matters and how to set one up correctly.

Harshit Paul

September 12, 2018

12 min read

Manual testing runs steps by hand; automation testing runs them with scripts. Compare cost, accuracy, regression testing, and UAT to pick the right approach.

Arnab Roy Chowdhury

September 10, 2018

9 min read

Learn what software testing really involves, how a tester's work differs from a developer's, and which skills and tools a beginner needs to start a testing career.

Arnab Roy Chowdhury

September 7, 2018

8 min read

Android powers most mobile devices worldwide, so a buggy app loses users fast. Learn why Android application testing matters and what to check before you release.

Arnab Roy Chowdhury

September 5, 2018

9 min read

Software testers miss bugs when they check that a feature runs instead of testing how it behaves. Learn the habits that hide defects and how to change them.

Harshit Paul

September 4, 2018

9 min read

Bug triage is the process of reviewing, prioritizing, and assigning reported defects. Learn what to check in a bug report and how to set severity and priority.

Saif Sadiq

August 29, 2018

9 min read

Apache Web Server, launched in 1995, is a free, open-source, cross-platform HTTP server that once powered 67% of all websites worldwide as of November 2013, though its share has since declined. Maintained by the Apache Software Foundation and available on Unix, Linux, and Windows, it supports numerous programming languages, database connectivity, and built-in user authentication for testing a website's environment.

Harshit Paul

August 28, 2018

11 min read

Flaky tests, brittle locators, test data, CI/CD, slow feedback: here are 11 common test automation challenges and practical ways to solve each one.

Harshit Paul

August 23, 2018

10 min read

Having the perfect web development environment set up is the dream of every User Interface developer. Having a local environment enables the developers to work remotely on their client’s webpage from anywhere around the world.

Arnab Roy Chowdhury

August 22, 2018

9 min read

How to test multiscreen behavior: check layouts, buttons, and fonts across real devices, browsers, and screen sizes, since emulators alone miss key breakages.

Arnab Roy Chowdhury

August 16, 2018

8 min read

Learn how to test a mobile website across screen sizes, emulators, simulators, and real devices, plus how mobile-first indexing and Core Web Vitals affect ranking.

Harshit Paul

August 15, 2018

5 min read

Reduce and simplify test cases using pairwise testing, clustering, genetic algorithms, greedy selection and fuzzy logic, plus how AI models now shrink a test suite.

Saif Sadiq

August 15, 2018

9 min read

By far, I am sure we have all witnessed an increase in the usage of mobile web browsers. According to StatCounter, there has been a noticeable incline in mobile and tablet users. By April 2014, 30% of web traffic was incoming through mobile users and the percentage has been elevating ever since.

Harshit Paul

August 15, 2018

12 min read

Here is a detailed guide on remote debugging: remote debugging with firefox and remote debugging on android

Arnab Roy Chowdhury

August 14, 2018

8 min read

In this guide, explore what WebViews are, how they work, and how to test them. Discover best practices and tips for WebView testing today.

Harshit Paul

August 14, 2018

9 min read

Microservices testing brings real challenges: integration testing, service coordination, and performance tracing. See what causes them and how to fix each one.

Harshit Paul

August 8, 2018

9 min read

Regression testing confirms mobile web functionality still works after code changes, using entry and exit criteria, manual checks, and automated suites.

Arnab Roy Chowdhury

August 8, 2018

9 min read

Learn why expected test fails and unexpected passes happen in software testing, what causes false positives and negatives, and how teams catch them today.

Gaurav Khattar

August 6, 2018

7 min read

Test a microservice architecture by validating each service independently, then its scalability, functionality with ReadyAPI, and the full system end to end.

Arnab Roy Chowdhury

August 3, 2018

8 min read

Cognitive overhead is the number of mental jumps a user's brain makes to complete a goal on a page. Reducing it keeps users focused instead of leaving.

Deeksha Agarwal

July 30, 2018

9 min read

Testers care about the software same as developers. The end result of both of them working together is an enjoyable bug free application. The value of manual testing can never be underestimated, and there are some reasons for which manual testing is still prevailing.

Arnab Roy Chowdhury

July 27, 2018

10 min read

Software testing is a high-demand career with routes into manual testing, automation, performance testing and AI testing. Here are 13 reasons to choose it.

Arnab Roy Chowdhury

July 17, 2018

10 min read

Run this cross browser testing checklist before launch. It covers layout, SSL, fonts, media, APIs, forms, dark mode, and cookies across browsers and devices.

Deeksha Agarwal

June 19, 2018

13 min read

Learn key tips and compatibility issues to build Safari compatible websites, including standards to follow and common challenges developers faced in 2018.

Robin Jangu

May 25, 2018

11 min read

Cross browser testing checks that a website or web app displays and functions correctly across different operating systems, browsers, browser versions, and screen resolutions on both desktop and mobile devices. TestMu AI supports this with live interactive testing plus visual UI checks like screenshot testing across 25 configurations at once, responsive testing, and automated visual bug detection.

Deeksha Agarwal

May 19, 2018

5 min read

Making a cross-browser compatible website means testing beyond your default browser choice, since a site built and verified only in the latest Chrome can break entirely in Safari or Firefox with misaligned sections and missing animations. Fixing this involves checking the doctype, applying a CSS reset, using separate stylesheets where needed, choosing cross-browser-friendly libraries, and validating the result.

Deeksha Agarwal

May 11, 2018

14 min read

Cross browser compatibility means a website's code and design work consistently across every browser, device, and screen size your visitors use to access it. Without it, users who hit rendering problems leave, and statistics show 45 percent will hesitate to revisit that site again.

Deeksha Agarwal

May 4, 2018

13 min read

How modern e-commerce websites are built for speed and UX: service worker caching, lean webpack bundles, image loading, PWAs, and AI shopping agents.

Robin Jangu

April 19, 2018

12 min read

Build a cross browser testing strategy in three levels: find bugs locally, rank browsers by rendering engine and risk, then run a sanity pass by market share.

Deeksha Agarwal

March 1, 2018

15 min read

Learn how to test fintech applications with real examples: business scenarios, functional, database, security and UAT testing, plus how AI changes fintech QA.

Deeksha Agarwal

February 23, 2018

11 min read