Testing

19 articles tagged “Testing”

• 25 Sept 2026

  Screenshot Testing: How to Get Reliable Results

  Screenshot testing works only when the same page gives the same image twice. How to capture reliably, what to compare, and how to tell flake from a real bug.

  Visual TestingTestingScreenshots
• 23 Sept 2026

  The Best Visual Regression Testing Tools in 2026

  Open-source and hosted visual regression testing tools compared on price, free tiers and what they actually screenshot. Every figure from the vendor's own page.

  Visual TestingTestingTools
• 14 Sept 2026

  AI Visual Testing: What It Actually Does (and Doesn't)

  Every visual testing tool now advertises AI. What the models actually do, what stays deterministic, and where AI still gets it wrong, with the numbers.

  AIVisual TestingTesting
• 9 Sept 2026

  Responsive Design Testing: Breakpoints Checklist and Tools

  Which breakpoints to test in 2026 (with device data), what breaks at each one, manual vs automated testing, the tools, and how to screenshot every breakpoint on every deploy.

  Visual TestingTestingAutomation
• 8 Sept 2026

  Website Migration Testing Checklist (with Visual QA)

  A practical website migration testing checklist: build the URL inventory, verify redirects and content, compare every page visually at every breakpoint, and keep monitoring after launch.

  Visual TestingTestingDrupal
• 22 Aug 2026

  Diffy AI Summary: Visual Diffs Explained in Plain English

  Diffy AI reads every changed screenshot in a comparison and writes one plain-English summary, split into Critical and Minor changes. Available on request.

  Visual TestingAITesting
• 14 Aug 2026

  AI Screenshot Checks: Recommendations For Better Screenshots

  Diffy's AI check catches cookie banners, CDN challenge pages, unloaded media and broken layouts before they turn into false positives in your results.

  Visual TestingAITesting
• 7 May 2026

  Visual Regression Testing: When and What to Test

  Visual regression testing sits between manual QA and automated tests. When it makes sense, what to test, and why good screenshots are hard.

  Visual TestingTestingDrupal
• 13 Nov 2022

  25 QA & Web Development Testing Statistics for 2026

  25 web development and QA testing statistics on bugs, automation and design, with sources, to help you benchmark your own testing process.

  QATesting
• 24 Aug 2022

  Regression Testing: Your Step-by-Step Action Plan

  A step-by-step regression testing plan for a website you did not build, including how to prioritise tests, plus two real-world worked examples.

  Visual TestingTesting
• 12 Aug 2022

  12 Common Visual Bugs Automated Testing Catches

  The visual bugs you can catch by eye and the ones you cannot, based on the regressions we see most often across the sites Diffy tests daily.

  Visual TestingTesting
• 27 Jul 2022

  Automation Testing 101: Benefits, Types & Tools

  What automation testing is, when it beats manual testing, the main types of automated tests, and how to choose the right tool for your project.

  TestingAutomation
• 1 Jun 2022

  User Acceptance Testing: Checklist and Process

  User acceptance testing explained: prerequisites, a full UAT checklist, how to plan it, and how to identify test scenarios and prepare test data.

  Testing
• 17 May 2022

  Compatibility Testing: Types, Examples & Tools

  Compatibility testing explained: the main types, worked examples, and the tools we recommend for checking your site across browsers and devices.

  Testing
• 13 Apr 2022

  Functional vs. Non-Functional Testing Compared

  Functional vs non-functional testing compared: what each one measures, when you need it, and the tools we recommend for both kinds of testing.

  Testing
• 22 Mar 2022

  Non-Functional and Functional Testing: Types and Tools

  The full testing taxonomy in one guide: functional types (unit, integration, system, acceptance) and non-functional types (load, volume, security, scalability), with examples and tools.

  Testing
• 22 Oct 2020

  How to Screenshot Tabs, Mobile Menus and Sliders

  How to capture screenshots of tabs, mobile menus and sliders by running click actions on the page before each screenshot is taken.

  Testing
• 26 Feb 2020

  Visual Testing False Positives: 5 Ways to Fix Them

  Why visual tests flag changes that aren't bugs, and five fixes: mask elements, hide them with CSS, freeze animations, use content fixtures and sync environments.

  Visual TestingTesting
• 18 Feb 2020

  Visual Testing of Patternlab and Drupal

  How to run visual regression testing against a Patternlab component library in Drupal and catch regressions across every component at once.

  DrupalVisual TestingTesting