1 minute read
Here is the list with some of the most popular visual comparison tools for discovering UI design issues:
LoadFocus Visual Regression Testing – AUTOMATED VISUAL REGRESSION TOOL for Websites and UI Designs
BackstopJS – BackstopJS automates visual regression testing of your responsive web UI by comparing DOM screenshots over time.
Wraith – A responsive screenshot comparison tool
PhantomCSS – Visual/CSS regression testing with PhantomJS
CasperJS – Navigation scripting and testing utility for PhantomJS and SlimerJS http://casperjs.org/
Spectre – A simple UI for browsing and inspecting diffs, and an API for runner scripts to submit screenshots to and receive a pass or fail in real time. (For use with Wraith, Backstop, Selenium etc)
VisualReview – VisualReview, a human-friendly tool for testing and reviewing visual regressions.
Gemini – Gemini is a utility for regression testing the visual appearance of web pages.
WebdriverCSS – Regression testing tool for WebdriverIO
Kobold – Visual regression testing framework, comparing screenshots from multiple builds
LoadFocus is a cloud testing platform for Load Testing, Website Speed Testing, Mobile Testing, Automated Website Testing and Visual Regression Testing. 2 minutes read
Visual Regression Testing tool from LoadFocus allows to compare two version of your website in just seconds. Let’s say that you have two environments for your website, Staging and Production, and you want to make sure that any visual change you made on the Staging version is expected and now other changes/bugs are going to be introduced.
With Visual Regression Testing tool you can create a test where you define the two versions of your website, with every webpage that you want to run the screenshot comparison test.
Here are the steps how you can compare two versions of your website in seconds, have the test saved in LoadFocus Platform.
- Define each webpage you want to runt the test agains i.e. https://loadfocus-staging.com vs https://loadfocus.com
- Choose which responsive screen or mobile device to open the webpage and take the screenshot
- Set the threshold for passing/failing the test (basically all different pixels below this threshold are going to be ignored)
- Run the test from within https://loadfocus.com/visual-regression-testing or from the Chrome Extension
- Inspect the generated screenshot to view differences highlighted in red
Run the Visual Regression test in just seconds for all the defined webpages, also for faster access to results, you can use the Chrome Extension for Visual Regression Tests.
Easily spot the differences by accessing the generated comparison image which is available from within the visual test.
The Visual Regression test will fail if the differences between the two pages are higher than a set threshold (“tolerance” can be set from 0% to 90%).
Hope you enjoyed this new visual regression testing service which will make your life easier and will give you more confidence when releasing new functionalities/features. To have an idea, how this service works, you can play with the free screenshot comparison tool.
The Visual Regression Testing tool is part of LoadFocus and will be available for all plans, check our Pricing and Plans.
LoadFocus is a cloud testing platform for Load Testing, Website Speed Testing, Mobile Testing, Automated Website Testing and Visual Regression Testing.
1 minute readLoadFocus.com: Screenshot Comparison tool is visual regression testing of your responsive web UI by comparing DOM screenshots
screenshot test application for responsive websites and web-applications.
The Screenshot Comparison tool uses a headless browser to create screenshots of webpages on different environments and then creates a diff of the two images with the affected areas are highlighted in red.
1. Takes screenshots of your webpages (URLs)
2. Run a comparison task across them
3. Output a diff PNG file comparing the two images with the number of pixels that have changed.
4. If any screenshot’s diff is above the threshold you specified, the test Passes.
5. The failed screenshot will also be highlighted in the list.
Create more tests and define more URLs per test with Visual Regression Testing Tool.
LoadFocus.com: Free Screenshot Comparison tool is useful to test responsive layouts since it’s very hard and time consuming to test all of a project’s screen elements at every breakpoint.
Visual regression allows you to make comparisons based on (pixel differences) between the baseline versions of the site and the version in development (comparing staging vs. production environments).
1 minute readWe’ve compiled a full list that we used in order to promote out startup. In order to save time we’re going to present only the list, the best startup list to promote your startup and find investors:
1 minute readWebsite speed testing metrics are useful when you understand what do they mean and which are the most important metrics that you need to consider. Below is a list of metrics used in website speed testing that you may find useful, here are the metrics and their definitions:
First byte – Delay between the first HTTP request from the web browser and the reception of the first byte of the web page by the browser
It’s recommended a time less than 200 ms
DOM Ready – Delay between the first request from the web browser and the first display on the user’s screen
It’s recommended that the visible part of your web page appears in less than 1 second
Load time – The web page is fully loaded, all the resources are fetched, parsed and executed
Page must be loaded within 4 seconds
Page size – The total size of assets loaded: CSS, JS, HTML + other
Page score – The score calculated based on a number of factors: compression of the resources, enable/disable caching, CSS/HTML/JS minifying etc
Run a website speed test now to check how fast is your website and find potential improvements.
1 minute readLoad testing should be an easy, on going task that your team should focus in terms of constantly improving the quality of your application.
LoadFocus is an easy to use, in browser, cloud load testing application which allows to simulate load tests from the browser to your application with up to 600k connections per test. This should give you an overall idea of how your application behaves in terms of high load.
Make your you start your load test with a lower number of clients and check the live results, in order to find potential bottlenecks of the website, API or any web service you are trying to debug.
Increase the load gradually, to understand where the errors start to appear, and the time metrics increase more than expected.
At the beginning of your test, you should understand which is the current load on your website and run load test much above your current average, just to be able to handle unexpected load on your application.
Load tests are easy to run using LoadFocus.com, an online cloud testing platform, that runs from your browser. No coding or configuration needed.
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