How To Find Bugs on Websites

April 22, 2026 · 8 min read · Testing Guide

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How To Find Bugs on Websites

How To Find Bugs on Websites

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Bug
A fault or error in software that cause incorrect or unexpected behavior, requiring designation, prioritization, and resolution within the defect lifecycle.

Why You Need To Find Website Bugs

Bugs can occur in any digital scheme, from package to mobile apps and websites, and sometimes these bugs can cause tremendous chaos and negative impact on the bottom line. The more traffic a website receives, the outstanding an impingement a bug can cause. & nbsp;
 

An interesting example is the case of the collapse of a U.S. government healthcare website. On 1 October 2013, the healthcare.gov website was establish, but many users live crashes, delay, error, and slow performance after its release. The site had over 4 million alone visitant on the first day, but exclusively six people were capable to successfully enrol in health plan due to bug on the website. Even those who register and shopped online encountered frustrating mistake and confusing duplicates in their applications. & nbsp;
 

As a result, the site had to be taken down for important repairs during the first weekend because it was much unserviceable. The project toll about & nbsp;$ 500 million, yet they didn ’ t concentrate their efforts on finding bug. This disaster could have easily be avoided with some exhaustive & nbsp;
 

In this article, we ’ ll guide you step by step on how to find bug on websites and suggest tools that you can leverage to improve web testing.

How To Find Bugs on Websites

1. Choose Between Manual Testing vs. Automation Testing

Before finding bugs, you need to opt the right attack. There are two common means to encounter bug on any website: manual examination and mechanization examination.
 

is simply about manually interact with website elements to see if anything do not act as require. For example, if you want to test the login feature on your website you can navigate to the login page, so enter credentials of a registered user into the right fields. If you successfully log into the website, and you see the UI of a logged-in user, you know that the feature works fine.
 

However, that only addresses a “ valid credential ” scenario, and sometimes users likewise input “ invalid credentials, ” so you also need to intentionally type incorrect username and password combinations to see how the scheme respond. Similarly, there are many other scenarios that tumble under the login/registering feature that you should test, include:

  • Forgot watchword
  • Account lockout
  • Remember me feature
  • 2FA verification (if your site has it)
  • Security validation
  • Performance and lading testing (to see how the scheme responds under abnormal traffic)
  • Localization (to see lyric preferences settings)

Manual testing is suitable for small-scale websites with simple features. However, when it comes to more advanced websites with thousands or even millions of pages hold complect feature, performing manual screen alone can be exhausting. & nbsp;

 

Read More:
 

Here testers may want to leverage web & nbsp;to test repetitive test cases. They can code test scripts using popular automation frameworks like Selenium, or choose an & nbsp;that offers the features that they need.
 

The ultimate decision on whether to choose manual testing depends on many factors. If you are building a pursuit website, have restrict budget, or your testing needs are not too high, manual testing is a great pick. However, as your website scale, automation testing will be extremely valuable in helping you find bugs fast, more expeditiously, and with no human errors, which can present significant ROI in the long run. Many QA squad unremarkably go for a hybrid approach — automating repetitive tasks but nevertheless using manual testing in website areas that postulate a human touch.
 

Read More: & nbsp;

 

2. Determine the Testing Types To Perform and Tools To Use

Now that you have decided on the approach to use, the next measure is to choose the right examination type. Each testing type allows you to find a different type of bug, and may require a unique type of tool. Below is a comprehensive list of essay case that you should consider with areas that they cover and suggestions on how to test:
 

Testing Type

Areas Covered

How To Test

Feature functionality, user interaction, piloting, descriptor, fault handling

- Design comprehensive examination scenarios including confident and negative cases

- for causa that need a wide miscellany of input data sets

Usability Testing

For autonomous testing across multiple user personas, check out SUSATest — it explores your app like 10 different real users.

User-friendliness, overall exploiter experience, website layout, navigation

- Involve representative user groups

- Look for bugs related to layout, blueprint, readability, intuitiveness, error messages, and ease of navigation

Tests application programme interfaces, data transmission

- Test each API endpoint; formalise the request/response data structure, format, and content

- Try creating, update, deleting, and retrieving data through the API to see how it processes and stores data

Functionality and usability on mobile devices, responsive design

- Test your site on different screen sizes and operating scheme

- If applicable, also test offline functionality

Performance Testing

Website execution, response times, scalability

- Test for slow load Page, long reply time, broken images or media, inefficient scripts, memory leaks, and any bottlenecks that affect the exploiter experience

- Test under various network conditions

Security Testing

Identify and mitigate protection risk, information protection

- Look for bug touch to insecure login mechanisms, cross-site scripting (XSS), SQL injection, cross-site request forgery (CSRF), insecure data transmission, and inadequate access control

- Test the site 's authentication and authorization mechanisms

Website availableness for users with disabilities, screen reader support

- Test for compatibility with screen readers, keyboard navigation, substitute schoolbook for images, color contrast, and adhesiveness to web availability guidelines (WCAG)

 

3. Include Cross-browser Testing and Cross-device Testing

is an important action when finding bugs on websites. There are currently & nbsp;63,000+ potential browser-device-OS combinations & nbsp;that provide an extremely unique browsing experience for each exploiter. Someone browse on Safari using an iPhone 14 with the latest updates experiences a whole different website compared to someone browsing on Google Chrome using a Dell laptop with a 15.4 ” screen. Without cross-browser testing, you risk serving your diverse user base a negative web experience. & nbsp;
 

The key is to bump out what browsers-devices-OS the majority of your users are using and conduct testing on them in order to catch bugs easily.

 

4. Report and Track Bugs

If you work with a comprehensive team, the development team will handle the troubleshooting of the bug you detect. To report and track bugs, you can simply use Google Sheets. Open up a new spreadsheet, so add bug categories to help you better classify any bugs you chance. A good list of bug categories include:

  • Severity: The grade of encroachment a bug has on the execution or protection of the system, ranging from high to low.
  • Priority: The stage of urgency assigned to a bug, bespeak how quickly it needs to be speak, ranging from high to low.
  • Reproducibility: Whether a bug can be consistently reproduced, occurs occasionally, can not be reproduced, or the cause of the topic can not be identified.
  • Root effort: The underlying reason or source of a bug, such as a mistake in the codification, a flaw in the design, a configuration problem, or an error create by the exploiter.
  • Bug type: The category or classification of a bug, such as functional issue, problems with performance, trouble in serviceableness, security vulnerabilities, or compatibility errors.
  • Areas of impact: The portion or component of the system that are touch by the bug and may experience consequences or negative effects.
  • Frequency of occurrence: How often the bug occurs, whether it pass frequently, occasionally, or rarely.

You can also add another column for & nbsp;, with dropdowns that include & nbsp;In Progress, To be Retested, Fixed. For more advanced need, you can leverage bug management tool with more tailored features.

 

Read More:

Level Up Your Web Testing With Katalon

Katalon is a comprehensive quality direction platform that simplify all aspects of web essay. You receive all the features you involve to find bugs on site in a single program:

 

  • Test conception: Quickly concept a test for any feature on your websites using Katalon ’ s built-in keywords. They are fundamentally code snippets that you can easily drag-and-drop to construct a total test script that can be executed on any environment. For illustration, if you desire to test a login lineament on a website, you can drag-and-drop the following keywords to make your examination:
    • Open browser (e.g., Chrome, Edge, etc.)
    • Navigate to URL (input your Login page)
    • SetText (to input your username/password)
    • Click (to click on certain buttons such as login)
    • Wait until element is visible (to wait until the login is successful)
    • Close browser

Without a single line of code, you can manufacture a tryout that can be mechanically executed whenever you want. Katalon also has a & nbsp; characteristic to record the actions on your browser and turn them into a full exam book. What ’ s even best is that you can build new keywords by yourself, so there is always room for customization.

  • Test execution: you have create on many democratic browser, environments, and operating systems. & nbsp;
  • Test management: Group all of the tests you receive created in trial suites and tryout collections (as a hierarchy) so that you can have a centralized view over all of the tests.
  • Test coverage: Export detail analytics on your test runs to win a comprehensive understanding of your website quality and communicate termination to stakeholder.
  • Test provision: If you work as a team, Katalon can help you convey easily with many collaborative feature and integrations with Slack, Jira, and Microsoft Teams. & nbsp;

 

 

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FAQs on Website Bugs Identification

Why is it important to find bugs on websites?

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Finding glitch on websites is crucial to prevent negative impacts such as clank, mistake, dumb performance, and wretched user experience, which can guide to significant financial loss and damage user trustfulness, as seen in the healthcare.gov example.

What are the main approaches to finding bugs on websites?

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The two primary approaches are manual examination, where testers interact with website elements manually, and automation testing, which expend coded hand or creature to test insistent scenario expeditiously. Many teams opt for a hybrid approach, combining both.

What are some essential test character to perform when looking for website bugs?

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Key testing types include:

  • Functional Testing (feature functionality, user interactions)
  • Usability Testing (user experience, layout)
  • API Testing (information transmission)
  • Mobile Testing (mobile device compatibility)
  • Performance Testing (speed, scalability)
  • Security Testing (vulnerabilities)
  • Accessibility Testing (for exploiter with disabilities).

How can website bugs be efficaciously reported and tracked?

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Bugs can be describe and tracked using tools like Google Sheets or dedicated bug management tools. Important class to include for each bug are Severity, Priority, Reproducibility, Root effort, Bug character, Areas of impact, and Frequency of occurrence, along with a Bug status to supervise progress.

Contributors
The Katalon Team is composed of a diverse radical of dedicated professionals, including subject matter experts with deep domain cognition, experienced technical writers skilled, and QA specialists who bring a practical, real-world view. Together, they contribute to the Katalon Blog, delivering high-quality, insightful articles that authorize user to make the most of Katalon ’ s tools and stay updated on the modish movement in trial automation and package quality.

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