BackstopJS
pixelmatch
BackstopJS | pixelmatch | |
---|---|---|
11 | 5 | |
6,620 | 5,847 | |
- | 0.9% | |
9.0 | 3.1 | |
1 day ago | 8 months ago | |
JavaScript | JavaScript | |
MIT License | ISC License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
BackstopJS
- Waiting for hte clients site to load after updating plugins
-
Is there a way to automatically find UI related/CSS bugs, something that works like unit testing but it's UI?
Ive used backstopjs for this in the past https://github.com/garris/BackstopJS
-
Comparing Full Page Screenshots, Cross-Device
There are different tools for visual screenshot testing, like BackstopJS, and Cypress.io also has a screenshot() function. In this series, I focus on writing tests with CodeceptJS.
- BackstopJS automates visual regression testing of your responsive web UI by comparing DOM screenshots over time
- BackstopJS: Catch CSS Curve Balls
-
What's your primary goal when you do screenshot testing?
I’ve been using BackstopJS for doing the regression testing, which is very useful and provides a nice report showing differences if it finds any. Recently I’ve been looking at Cypress for my other types of tests, and realized it also supports visual regression testing, though there isn’t a nice report that it outputs. Setting it up in Cypress is pretty easy though.
-
Help on post-deployment test
I would look into visual regression testing instead of programmatically checking for the presence of UI elements if possible. Basically , you take screenshots of all your web pages pre and post deployment. The selected tool then compares the screenshots and shows the pixel differences. I have used backstop js in the past: https://github.com/garris/BackstopJS but am not sure what tool is more used nowadays. After a quick Google search, I had a difficult time trying to find a free tool. Since you are using Cypress, I found an article where someone was able to use the snapshot plugin to create a visual regression test suite: https://www.toptal.com/web-qa/ui-visual-regression-testing . Sorry for lack of formatting. I am on mobile and this is the best I can do right now. Hope this helps.
-
Visual Regression Testing with Playwright
Popular libraries such as BackstopJS for Puppeteer, or Loki provides developers and QA with powerful techniques to quickly, and easily, set up visual regression testing.
-
Ask HN: What is the best visual diff program for web pages?
Backstop.js is very useful for this. Provides good tools for viewing the visual diffs. Also possible to automate in a CI environment.
https://github.com/garris/BackstopJS
-
Automated Visual Regression Testing with BackstopJS
BackstopJS is a framework that automates visual regression testing. This framework is written in JS and consists of the following tools:Puppeteer(headless chrome)+ ResembleJS(diff library). It uses a headless Chrome, in that way it's not actually opening up our Chrome browser and it's not taking screenshots that we can see. All we have to do is, write a script for simulating user scenarios and run backstopJS commands and it goes through and simulates user flows with headless chrome automatically. All we have to do is, run a simple command in the command-line tool so that it will take care of all the work for us.
pixelmatch
-
Immich - High-performance self-hosted backup photos/videos from your mobile phone (kinda like a Google Photos replacement) - Progress update July 27th, 2022. The album feature on the web is here 🎉
I'm the dev for a javascript-based reddit bot that implements image comparisons using both pixel matching and/or perceptual hashes (that could be stored in a DB). I'd be happy to go over high-level or implementation details if its something your team would be interested in. Either on github or elsewhere.
-
JS Question
There are quite a few image comparison libraries in pure Javascript for both node and browser.
-
Show HN: Instantly create a GitHub repository to take screenshots of a web page
You could absolutely get this working with GitHub Actions with a bit of creativity.
I've been playing around with my own image-diff tool for this kind of thing, but it's not yet in a decent state: https://github.com/simonw/image-diff - there are other, better options out there such as https://github.com/mapbox/pixelmatch
Needle is an older system that did this using Selenium - updating that to work with Playwright (or Playwight via shot-scraper) would be an interesting project: https://github.com/python-needle/needle
-
Visual Regression Testing with Playwright
Internally, Playwright Test uses the pixelmatch library to compare screenshots for visual differences. It is possible to pass several options to this library, to fine-tune the comparison of images. The most important option is the threshold option, which indicates the threshold amount of differences allowed between two images.
-
An Introduction to Scraping (Almost) Anything With Puppeteer and Node.js
Other use-cases include combining screenshots with the Autocode scheduler, a file hosting platform like Box, and a package like pixelmatch to create daily screenshot diffs for regression testing.
What are some alternatives?
cypress-image-snapshot - Catch visual regressions in Cypress
odiff - The fastest pixel-by-pixel image visual difference tool in the world.
loki - 👁 Visual Regression Testing for Storybook
Cypress - Fast, easy and reliable testing for anything that runs in a browser.
screenity - The free and privacy-friendly screen recorder with no limits 🎥
android-capture - Capture video and screenshots from Android devices and emulators.
vue-testing-library - 🦎 Simple and complete Vue.js testing utilities that encourage good testing practices.
DownloadNet - 💾 DownloadNet - All content you browse online available offline. Search through the full-text of all pages in your browser history. ⭐️ Star to support our work!
cypress-visual-regression - Module for adding visual regression testing to Cypress
nightwatch - Integrated end-to-end testing framework written in Node.js and using W3C Webdriver API. Developed at @browserstack
TestCafe - A Node.js tool to automate end-to-end web testing.