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Front-End Testing Handbook: Definition, Types, Resources, Checklists, and More

Looking for a comprehensive guide to front-end testing? This guide has everything you need to get started, from cross-browser compatibility testing to unit and performance testing. Plus, find out how online surveys can enhance your testing process.

What is Front-End Testing?

Front-end testing is a process of testing the graphical interface of web applications to ensure that they are free of defects. This type of testing is important because it helps to ensure that users have a positive experience when using the application and that they are able to navigate through it easily. GUI tests can check things like alignment, navigation, and page load speed.

Front-end testing of websites ensures that Internet pages function. There are several sources of errors that can have a negative impact on the appearance and functionality of websites.

An Introduction to Frontend Testing

An Introduction to Frontend Testing – by Sentry (05m:10s)

How Front-End and Back-End Testing Are Different

What is Back-End Testing?

Back-end testing is used to validate the business logic and database layers of a web application. Back-end testing is typically done in the early stages of development.
Back-end testing focuses on verifying the business logic and database layers of a web application, which users cannot see. It is used to test the server-side of an application.
Back-end testing includes checking for schema, CRUD operations, ACID properties, business rule compliance, security and performance.

Why is Back-End Testing important?

Because it allows developers to catch errors and bugs early on in the development process. By catching these errors early, developers can save time and money by avoiding having to fix them later down the line.

The Difference between Front-End and Back-End Testing

Front-End Testing verifies the user-facing interface of a software application. It requires knowledge about requirements related to user experience, but not about the database and the back-end mechanics.

Back-End Testing checks the efficacy of the functionality on the server and database side of the software.

Front-End Testing Types

Unit Testing

Unit testing is the process of testing a unit of code (a section, function, or piece of data) by running it as if it were part of the whole program. This allows developers to verify that the code works as expected and identify any potential issues early on.

Integration Testing

Integration testing is a quick and easy way to test the interaction between different parts of your application. Integration testing can be set up relatively cheaply. By integration testing different parts of your application, you can ensure that they work together as expected and identify any potential issues early on. This can save you time and money in the long run, as fixing issues later on in the development process can be more costly.

System Testing

System tests check how an application behaves under various conditions, such as when users are logged in or when the system is under stress. This type of testing helps to ensure that an application will work correctly under real-world conditions.

Acceptance Testing

Acceptance testing is a process of testing software to ensure that it meets the user’s requirements. This type of testing is typically done by the development team, rather than by independent testers. Acceptance testing can be used to confirm that user inputs, user flows, and any designated actions on the front-end are coded and functioning properly. Development teams use acceptance testing to make sure the final model of the application works as it is expected to by end users.

Visual Regression Testing

Visual regression testing is a type of front-end testing that compares screenshots of the interface to see if they match the expected version. This test focuses on the interface of the application.

Accessibility Testing

Accessibility testing is a process used to ensure that an application can be used by everyone, regardless of their ability or disability. This type of testing is important for making sure that all users can access and use the features and functionality of an application.
There are many different ways to test for accessibility, but some common methods include using screen readers or other assistive technologies, testing with users who have different disabilities, and checking for compliance with accessibility standards.

Performance Testing

Performance testing is a process of assessing the speed, stability, and scalability of a software application. It is important because it helps to ensure that the product maintains its desired quality when the user load is increased. Performance testing can be used to analyze many aspects of the application, such as speed, stability, scalability and responsiveness.

End-to-End Testing

End-to-end testing is a type of testing that checks the flow of an application from start to finish. It ensures that all system elements work as expected and that communication between them is smooth. End-to-end testing is important because it can catch errors and problems that may not be apparent during unit or integration testing. By mimicking real world scenarios, end-to-end testing can give you a more accurate picture of how your application will perform in a live environment.

Cross-Browser Compatibility Testing

Cross-browser compatibility testing is a process of confirming that an application works as expected in different web browsers. Cross-browser testing is automated to reduce the time and effort required. Cross-browser compatibility testing is important because it helps ensure that users will have a positive experience using your application no matter which browser they are using.

market research - types of front-end testing

Leveraging Online Surveys for Effective Front-End Testing

As already mentioned, front-end testing is a crucial step in the development of any digital product, ensuring that the user interface is user-friendly, functional, and visually appealing. Online surveys can be invaluable tools in this process, allowing market research professionals to gather user feedback, uncover usability issues, and validate design decisions. In this section, we’ll explore how to use online surveys for front-end testing, the key steps involved, the challenges you might encounter, and best practices for successful testing.


Don’t just rely on the opinion of a few testers, tap into the knowledge of the masses. More than 5 million survey participants of our worldwide community are ready to visit your websites and document any errors or usability problems.

Set up a front-end testing survey and see for yourself the quality and quantity of constructive feedback you can use to optimize your website.

Learn more about our UX Survey Tool

The Process of Front-End Testing with Online Surveys

  1. Define Objectives and Target Audience: Begin by clearly defining your front-end testing objectives. What specific aspects of your digital product are you testing? Who is your target audience, and what are their characteristics? This step helps you tailor your survey questions and identify relevant user segments.
  2. Create Survey Questions: Craft survey questions that align with your testing objectives. Questions should be clear, unbiased, and relevant. They can cover various aspects, such as ease of navigation, visual appeal, and overall user experience. Consider using a mix of multiple-choice, rating scales, and open-ended questions for comprehensive feedback.
  3. Select Survey Tools: Choose an online survey platform that suits your needs. The popular market research tool resonio e.g., offers user-friendly interfaces and various customization options. resonio also supports skip logic, branching, and result analysis.
  4. Recruit Participants: Depending on your target audience, you can use resonio’s community of survey participants or various other recruitment methods, such as email invitations or social media. Ensure that your sample size is statistically significant for meaningful insights.
  5. Distribute the Survey: Share your survey with selected participants, ensuring it’s easily accessible and user-friendly. Make it clear why their feedback is valuable and set expectations for the time required to complete the survey.
  6. Collect Responses: Monitor the response rate and analyze the collected data in real-time. Ensure that your survey platform allows you to gather both quantitative data and qualitative data.
  7. Analyze Data: After data collection, perform a thorough analysis of the survey results. Look for patterns and trends and identify specific pain points and opportunities for improvement in the front-end design.
  8. Implement Changes: Use the survey insights to inform design changes and improvements. This might involve tweaking the user interface, modifying content placement, or enhancing navigation.
  9. Iterate: Continue to iterate and conduct further surveys as necessary, progressively refining the front-end design based on user feedback.

Challenges of Front-End Testing with Online Surveys

  1. Sample Bias: Ensure your survey sample represents your actual user base. Sample bias can lead to skewed results.
  2. Survey Length: Long surveys can deter participants, resulting in incomplete responses. Keep surveys concise and to the point.
  3. Interpretation: Analyzing survey data requires careful interpretation. Understanding user comments and feedback can be complex.
  4. Survey Fatigue: Over-surveying your audience can lead to survey fatigue, impacting the quality of responses.
  5. Technology Limitations: Not all users may have access to or be comfortable with online surveys, so consider alternative testing methods.

Simple example of an online survey for front-end testing

In this chapter, we will explore a straightforward example of creating an online survey tailored for front-end developers, highlighting essential features and best practices.

Front-End Testing Survey: User Experience Feedback

Thank you for helping us improve our website! Your feedback is invaluable in making our platform more user-friendly. Please take a few minutes to answer the following questions to the best of your ability.

1. Demographic Information (Optional)

How old are you?

❍ Under 18
❍ 18-34
❍ 35-54
❍ 55 or over

What is your gender?

❍ Male
❍ Female
❍ Other
❍ Prefer not to say

Where are you currently located?

2. First Impressions

On a scale of 1 to 5, how visually appealing do you find our website? (1 = Not at all appealing, 5 = Extremely appealing)

3. Case Presentation (If applicable)

Please review the “Product X” case study on our website and assess its relevance and informativeness.

❍ Very Relevant
❍ Relevant
❍ Neutral
❍ Not that Relevant
❍ Totally Irrelevant

If “Not that Relevant or Totally Irrelevant,” please explain why:

4. Navigation and Layout

How easy was it to navigate on our website to find “Category Y”?

❍ Very Easy
❍ Somewhat Easy
❍ Neutral
❍ Somewhat Difficult
❍Very Difficult

Were you able to find information about “Product Z” easily?

❍ Yes
❍ No

If no, please describe the issues you encountered:

5. Functionality

Were you able to add “Item A” to your cart and successfully check out?

❍ Yes
❍ No

If no, please describe the issues you faced:

6. Mobile Experience (If applicable)

How does the website perform on mobile devices? (1 = Very Poor, 5 = Excellent)

7. Overall Satisfaction

On a scale of 1 to 5, how satisfied are you with your overall experience on our website? (1 = Very Dissatisfied, 5 = Very Satisfied)

8. Suggestions for Improvement

What specific improvements would you recommend to enhance your experience on our website?


This sample survey covers various aspects of front-end testing, including visual appeal, navigation, content, functionality, mobile experience (if applicable), and overall satisfaction. It combines quantitative and qualitative questions to gather comprehensive feedback from users.

Front-end testing tools focus on automated functional and UI testing to ensure the technical quality and functionality of the front-end, while front-end testing with surveys gathers user feedback and usability insights to improve the user experience and design of the application. Both approaches are valuable and can complement each other in achieving a high-quality, user-friendly web application.

Types of Testing Tools

There are many different types of testing tools available, each with its own advantages and disadvantages. The most popular types of testing tools are:

  • Functional Testing Tools
    These tools allow you to test the functionality of your product. They can be used to test both the front-end and back-end of your product.
  • Environmental Testing Tools
    These tools allow you to test the conditions under which your product will be used. This includes testing for things like compatibility with different operating systems or devices.

Examples of Front-End Testing Tools

Rainforest QA

Rainforest QA is a cloud-based testing platform that helps teams automate the process of finding and fixing bugs in their software. Testing with Rainforest QA is free for the first five hours each month, making it a great option for teams on a budget. To get started, simply sign up for an account and create a new test.


Selenium is a tool that can be used for testing websites. It can be used to test in various browsers and platforms, including Windows, Mac, and Linux. Selenium can also be used to develop tests in various languages, including Java and PHP.


Katalon Studio is a record-and-playback test automation platform that is built on top of Selenium and Appium. Katalon has an easy-to-use interface that helps testers without programming background to create tests with a drag-and-drop manual editor. Katalon offers helpful tools such as built-in keywords and project templates to help create test cases faster.

Front-End Testing Challenges and How to Deal With Them

Are You Using Automation for the First Time?

  • Automation can be a time-consuming and difficult process for new teams.
  • Implementing automation early in the project can help speed up testing and minimise problems.
  • Make sure your team is well-trained in automation frameworks and test case writing.
  • Make sure all setup issues are resolved before the development team begins work.

Emulating the Real World

When conducting front-end tests, avoid using emulators and simulators. Instead, use real browsers and devices. This will help ensure that your tests are error-free and reliable.

Agile and Regression

Agile testing is a methodology that helps developers and testers work together more effectively to deliver quality software. It helps reduce the risk of regression bugs by allowing developers to make changes quickly and easily, and then testing those changes to ensure they improve the app’s functionality. Testing tools are essential for ensuring quality software, and they can help find regression bugs before deployment.

Is It Front-End or Back-End?

Front-end testing is important because it verifies the user-facing interface of a software application. By testing the front-end, you can ensure that users will have a positive experience when using your software. Additionally, front-end testing can catch errors that may not be apparent on the back-end.

How to Create a Front-End Testing Plan

Step 1: Decide the Budget

The budget for front-end testing will vary depending on the size and complexity of the project. For small projects, a few hundred dollars may be sufficient. For larger projects, the budget may be in the thousands or even tens of thousands of dollars.

There are many different tools available for front-end testing, and the cost of these tools can vary widely. Some tools are free, while others can cost hundreds or even thousands of dollars. It’s important to decide which tools you need and how much you’re willing to spend on them before starting your front-end testing project.

Step 2: Decide the Tools

There are many tools available for front-end testing, so it is important to decide on a budget before beginning testing. Having a list of specific tools for different tasks will speed up the process.

Step 3: Set a Timeline

Before starting testing, it is important to set a timeline to ensure that all aspects of the front-end are covered. The following steps can help you create a front-end testing plan:

  1. Decide what needs to be tested. Make a list of all the features and functionality that need to be tested.
  2. Determine how long each test will take. Estimate the amount of time needed for each test, including setup time, execution time, and cleanup time.
  3. Create a schedule. Based on the information gathered in steps 1 and 2, create a schedule for testing. Be sure to allow adequate time for each test and leave some buffer time in case something unexpected comes up.
  4. Stick to the plan. Once the plan is created, do your best to stick to it. If changes need to be made, make them in consultation with stakeholders so everyone is on the same page

Step 4: Define the Project Scope

Determine the extent of testing required and the level of user feedback you aim to obtain.

front-end testing plan


Front-end testing is a critical process in web development, ensuring that user interfaces are flawless and user-friendly. As we’ve explored the various types of front-end testing, from unit testing to cross-browser compatibility testing, it’s evident that each method serves a unique purpose in maintaining the integrity and functionality of web applications.

Front-end testing not only enhances user experiences but also contributes to the overall success of digital products. Additionally, we’ve seen the power of leveraging online surveys to gather user feedback and usability insights, enabling developers to make data-driven decisions for continuous improvement.

Leveraging tools such as Rainforest QA, Selenium, and Katalon Studio can streamline the testing process and improve efficiency. By adhering to the principles and practices outlined in this guide, developers can create web applications that consistently meet user expectations and perform exceptionally in a diverse online landscape.

In an ever-evolving digital world, front-end testing, coupled with online surveys, remains a crucial cornerstone of web development, ensuring that applications remain robust, accessible, and user-centric.

FAQs on Front-End Testing

Why is front-end testing important?

Front-end testing is important because it allows you to test the functionality of your website before it goes live. This type of testing can help identify any potential issues that could impact the user experience, such as broken links or pages that load slowly. By testing the front-end of your site, you can ensure that your users have a positive experience when they visit your site.

What is meant by front-end testing?

Front-end testing is the process of testing a website or web application's user interface to ensure it meets the required standards. This type of testing can be performed manually or using automated tools.

What are the main types of front-end-testing?

There are several main types of front-end testing, which include unit testing, functional testing, and regression testing. Unit tests focus on small pieces of code to ensure that they are working as intended. Functional testing checks that the various elements of the front-end are working together as intended. Regression testing is used to check for bugs after changes have been made to the codebase.

What are common steps in front-end testing?

Common steps in front-end testing are as follows:

  1. load the page in the web browser
  2. check that all expected elements are present
  3. check that all links work
  4. check that the page layout is as expected
  5. check for broken images
  6. test the forms to ensure they are working correctly

Optimize Your Frontend Testing Discover our versatile online survey tool at resonio! Seamlessly design frontend test surveys, select participants, and access comprehensive survey analyses – all on a single, powerful platform. Learn more about our online survey tool
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Ines Maione


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Ines Maione brings a wealth of experience from over 25 years as a Marketing Manager Communications in various industries. The best thing about the job is that it is both business management and creative. And it never gets boring, because with the rapid evolution of the media used and the development of marketing tools, you always have to stay up to date.