Best Visual Testing Tools in the UK - Page 2

WebdriverIO allows you to automate any application written with modern web frameworks such as React, Angular, Polymeror Vue.js as well as native mobile applications for Android and iOS. WebdriverIO not only runs automation based on the WebDriver protocol, it also leverages native browser APIs to enable integrations to popular developer tools such as Chrome DevTools orGoogle Lighthouse. With the plugin you have access to commands for validating if you app is a valid PWA application as well as to commands for capturing frontend performance metrics such as speedIndex and others. The WebdriverIO testrunner comes with a command line interface that provides a nice configuration utility that helps you to create your config file in less than a minute. It also gives an overview of all available 3rd party packages like framework adaptions, reporter and services and installs them for you!

Storybook provides a sandbox to build UIs in isolation so you can develop hard-to-reach states and edge cases. Implement components and pages without needing to fuss with data, APIs, or business logic. Render components in key states that are tricky to reproduce in an app. Save use cases as stories in plain JavaScript to revisit during development, testing, and QA. Use addons to customize your workflow, automate testing, and integrate with your favorite tools. Stories are a pragmatic, reproducible way to keep track of UI edge cases. Write stories once then reuse them to power automated tests. Whenever you write a story you get a handy test case. Quickly browse stories to make sure your UI looks right. Pinpoint UI changes down to the pixel by comparing image snapshots of stories. Reuse stories in your unit tests to confirm nuanced functionality. Stories show how UIs actually work not just how they're supposed to work. That makes gathering feedback and reproductions easy.

TestMatch is a transaction content comparison tool that provides automated testing of mainframe OLTP (terminal-based Online Transaction Processing applications). It can be used to facilitate the migration of such legacy applications to open systems, or it can provide an automated regression test suite for an application. All user interactions can be recorded centrally on an IBM or Siemens mainframe using standard tools (no client-side or server-side installation of Astadia's tools). Since recording is performed at the network level, it works regardless of the development technology. TestMatch visualizes test scenarios and sessions: this includes the terminal contents as well as all attributes that are typical for terminal-based applications, protected/editable, MDT bit, reverse-video, and colors. TestMatch can replay the recorded scenarios, either against the migrated application (as a migration testing tool) or against the original application (as a regression testing tool).

RenderLog helps teams capture, test, and monitor web pages without maintaining their own Playwright infrastructure. Use it to create screenshots, export pages to PDF, Markdown or HTML, run no-code checks for pricing pages, signup flows, docs and UI states, and keep every result in one workspace. Each run can include outputs, metadata, assertions, visual baselines, history, and alerts, so teams can review what changed before users report it.

Diffy is a cloud-based visual regression testing platform for websites. It screenshots every page you list, at every breakpoint you choose, on production, staging, development or pull request environments, and compares them to show exactly what changed. - Compare two environments (e.g. staging vs production) or the same site before and after an update, on demand or on a schedule - Mask, remove or mock dynamic content; custom CSS and JS; log in before capture (Drupal, WordPress and Netlify presets) - Review UI: approve from thumbnails, group the same change across pages, shareable links - AI Summary of each comparison, sent to Slack, email, webhooks and GitHub/GitLab PR comments - Integrations: GitHub, GitLab, CircleCI, Pantheon, Upsun, CLI and API, Claude Code plugin Built for agencies and teams maintaining Drupal and WordPress sites. Free plan: 500 screenshots/month.

Chromatic takes pixel-perfect snapshots of real code, styling, and assets. Your tests reflect what your users actually experience. Chromatic creates tests from the Storybook stories already created during the development process. No need to write the same tests twice. Our custom detection algorithm eliminates flakiness from latency, animations, resource loading, and browser state. Chromatic provides a unified workspace for designers, product managers, and other stakeholders to share feedback and sign-off on UI. Post comments and change requests right beside your live components, so that everyone can follow decision-making. Automatically assign specific stakeholders to review open pull requests to speed up sign-off.