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CSSViewer VS Jest

Compare CSSViewer VS Jest and see what are their differences

CSSViewer logo CSSViewer

A simple CSS property viewer

Jest logo Jest

Jest is a delightful JavaScript Testing Framework with a focus on simplicity.
  • CSSViewer Landing page
    Landing page //
    2023-09-30
  • Jest Landing page
    Landing page //
    2023-09-10

CSSViewer features and specs

  • Ease of Use
    CSSViewer offers a simple and intuitive interface that allows users to easily inspect CSS properties of web elements by hovering over them.
  • Quick Access
    The extension provides quick access to CSS properties without the need to open the browser's developer tools, saving time for developers and designers.
  • Detailed Information
    CSSViewer displays detailed CSS information, such as font, color, and box properties, which can be useful for debugging or learning CSS.
  • Lightweight Tool
    The extension is lightweight and doesn't require significant system resources, making it a convenient tool for front-end developers.

Possible disadvantages of CSSViewer

  • Limited Functionality
    CSSViewer is limited to viewing CSS properties and does not allow users to edit them directly or offer any advanced features available in full-featured developer tools.
  • Browser Compatibility
    The extension is explicitly designed for Google Chrome, which means users of other browsers may need to look for alternatives.
  • No Updates or Support
    Users have reported that CSSViewer lacks regular updates, which may lead to compatibility issues with newer versions of Chrome or fails to support newer CSS features.
  • Potential Security Risks
    As with any third-party extension, users need to be cautious about permissions and potential security risks associated with installing and using such tools.

Jest features and specs

  • Easy Setup
    Jest provides an out-of-the-box configuration which makes it easy to set up and start testing quickly without needing extensive configuration.
  • Snapshot Testing
    Jest supports snapshot testing, allowing developers to capture the state of UI components, making regression testing easier.
  • Mocking Capabilities
    Jest offers powerful mocking capabilities for functions, modules, and timers, enabling isolated and independent unit tests.
  • Parallel Test Execution
    Jest runs tests in parallel, utilizing multiple workers to speed up test execution and improve performance.
  • Comprehensive Documentation
    Jest has thorough and well-maintained documentation which helps developers easily understand and utilize its features.
  • Watch Mode
    Jest has a watch mode feature that automatically re-runs tests when files are updated, improving development workflow.
  • Built-in Code Coverage
    Jest provides built-in code coverage reports, giving developers insights into which parts of their code are covered by tests.

Possible disadvantages of Jest

  • Performance Overhead
    Jest's parallel test execution can sometimes introduce performance overhead, especially in large projects with many workers firing at once.
  • Test Initialization
    Tests can take longer to initialize due to the need for Jest to transform code from modern JavaScript syntax down to older syntax versions.
  • Limited Browser Testing
    Jest is primarily designed for testing Node.js applications and may require additional configuration or tools for full-featured browser testing.
  • Learning Curve
    For developers unfamiliar with JavaScript testing frameworks, understanding Jest's extensive feature set and configuration options can be challenging.
  • Specific to JavaScript
    Jest is specifically designed for JavaScript and may not be suitable for projects that involve multiple programming languages.

Analysis of Jest

Overall verdict

  • Jest is considered a good choice for modern JavaScript development, particularly for projects involving React, due to its robustness, ease of use, and active community support. Its ability to run tests in parallel and produce detailed diagnostics contributes significantly to improving testing efficiency.

Why this product is good

  • Jest is a popular testing framework for JavaScript that provides a simple and highly effective environment for unit testing, especially for applications built with React. It comes with an extensive set of features including a zero configuration setup, a powerful mocking library, and coverage reports, all without needing additional tools. Jest's ease of use and speed make it a preferred choice for developers looking for seamless integration in their development process.

Recommended for

  • Developers working with React and looking for easy integration with minimal configuration.
  • Teams that require a fast and reliable testing tool with excellent community support and active development.
  • Projects that demand comprehensive testing capabilities including unit tests, integration tests, and snapshot testing.

CSSViewer videos

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Jest videos

60 Second Book Review: “Infinite Jest” by David Foster Wallace

More videos:

  • Review - How I Get Through Tough Books - Infinite Jest and Proust
  • Review - David Foster Wallace interview on "Infinite Jest" with Leonard Lopate (03/1996)

Category Popularity

0-100% (relative to CSSViewer and Jest)
Developer Tools
31 31%
69% 69
Development
100 100%
0% 0
JavaScript Framework
0 0%
100% 100
Design Tools
100 100%
0% 0

User comments

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Social recommendations and mentions

Based on our record, Jest seems to be a lot more popular than CSSViewer. While we know about 75 links to Jest, we've tracked only 5 mentions of CSSViewer. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

CSSViewer mentions (5)

  • 7 Must Have Chrome Extensions for JavaScript Developers
    The "CSS Viewer" Chrome extension is a handy tool for JavaScript developers seeking to inspect and analyze CSS styles on web pages. With a simple click on the extension's icon in the Chrome toolbar, it provides a user-friendly interface that allows you to hover over any element on a webpage and instantly view its corresponding CSS properties and values. - Source: dev.to / almost 2 years ago
  • 20 Top Best Chrome Extensions for Web Developers in 2022
    CSS Viewer is a simple but very effective Chrome extension for web developers. As its name implies, this addon shows you the CSS properties of a given page wherever you hover your mouse. A small popup window appears showing you the CSS data that makes up the element you’re pointing at. - Source: dev.to / almost 3 years ago
  • Top 10 Chrome Extensions for Web Developers in 2022
    1 - CSSViewer : It allows to show the CSS properties of element on any webpage, you just hover your mouse on it . A small window appears showing you the CSS data . - Source: dev.to / over 3 years ago
  • 21 Chrome Extension for web developer and designer
    CSSViewer helps us to view CSS properties of an object in a web page in the most general way such as color, font, size, position... You just need to select this utility and hover your mouse over the object that they want. If you want, the CSS information will automatically appear. CSSViewer. - Source: dev.to / almost 4 years ago
  • Awesome Tools and Technologies I Use as a Developer!
    CSSViewer - For viewing and inspecting CSS on a page. - Source: dev.to / about 4 years ago

Jest mentions (75)

  • Mastering Webhook & Event Testing: A Guide
    Popular frameworks like Jest, Mocha, or JUnit provide everything you need for effective webhook unit testing, with mocking capabilities that let you simulate external dependencies. - Source: dev.to / about 1 month ago
  • Most Effective Approaches for Debugging Applications
    Proactive testing is critical for catching bugs before they reach production. Comprehensive test suites—covering unit, integration, and UI scenarios—detect issues early in the Software Development Lifecycle (SDLC). Roman Surikov, Founder of Ronas IT, advises, “Ensure that [automated testing] covers various scenarios including unit, integration, and user interface testing to catch bugs early.” A 2024 Sauce Labs... - Source: dev.to / about 1 month ago
  • Between Diapers and Development – How My Blog Came to Life with Eleventy
    To maximize learning, I could choose something new. Normally, I consider that a valid reason. But given my limited time, that wasn't a priority for me. Another criterion could be long-term viability: Is there a large core team and an active community? Well, who still remembers AngularJS? From Google? And didn’t Facebook/Meta start Jest? I wouldn’t rely too much on that. - Source: dev.to / about 2 months ago
  • Migrating from AngularJS to React
    Additionally, I wrote Jest and Enzyme unit tests to demonstrate how to go about unit testing the components, as test driven development (TDD) is another methodology my organization subscribes to. Jest is a unit testing framework that actually shipped with React if you use the Create React App CLI to make a new React project. And at the time, Enzyme was created by Airbnb and added additional functionality to Jest... - Source: dev.to / about 2 months ago
  • Top React Testing Libraries in 2025
    Jest is a comprehensive testing framework developed by Facebook and is the default choice for testing React applications. It includes built-in capabilities for mocking, spying, and snapshot testing, ensuring minimal setup for testing even the most complex applications. Jest’s extensive support for parallel test execution and interactive features like coverage reporting and watch mode makes it highly efficient. - Source: dev.to / about 2 months ago
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What are some alternatives?

When comparing CSSViewer and Jest, you can also consider the following products

CSS Peeper - Smart CSS viewer tailored for Designers.

react-testing-library - [`React Testing Library`][gh] builds on top of `DOM Testing Library` by adding

Unused CSS finder - Crawl your website and find unused CSS

Mochajs - Mocha is a JavaScript test framework running on Node.js and the browser, making asynchronous testing simple.

Unused CSS - Easily find and remove unused CSS rules

Vitest - A blazing fast unit test framework powered by Vite