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W3C Markup Validation Service VS puppeteer

Compare W3C Markup Validation Service VS puppeteer and see what are their differences

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W3C Markup Validation Service logo W3C Markup Validation Service

Validates HTML markup of web pages, one at a time.

puppeteer logo puppeteer

Puppeteer is a Node library which provides a high-level API to control headless Chrome or Chromium...
  • W3C Markup Validation Service Landing page
    Landing page //
    2019-08-30
  • puppeteer Landing page
    Landing page //
    2023-08-02

W3C Markup Validation Service features and specs

  • Standards Compliance
    The W3C Markup Validation Service ensures that your web pages conform to established web standards, helping to improve web interoperability and accessibility.
  • Error Identification
    The service identifies errors and warnings in your HTML and XHTML documents, making it easier to debug and fix these issues to improve code quality.
  • Improved Compatibility
    By validating your markup, you can better ensure that your web pages are compatible with various browsers and devices, providing a more consistent user experience.
  • Free of Charge
    The validation service is provided by W3C at no cost, making it an accessible tool for developers of all levels to enhance their web projects.
  • Educational Tool
    For beginners in web development, the W3C Validator can serve as an educational resource by highlighting common mistakes and promoting best practices in coding.

Possible disadvantages of W3C Markup Validation Service

  • Limited to Syntax
    The validator primarily checks for syntax errors and does not assess other vital web development aspects such as design or functionality.
  • Outdated Standards
    The tool relies on W3C's standards, which can sometimes lag behind real-world usage and popular web development trends, potentially limiting its relevance.
  • Overly Strict
    The validator can be overly strict, flagging non-critical issues that may not impact user experience but are still considered 'errors' by the tool.
  • Misinterpretation of Results
    Less experienced developers might misinterpret the validator's results, focusing too much on achieving perfect validation without understanding the real impact on usability.
  • Lack of Support for Modern Frameworks
    As a markup validator, it might not fully support or correctly evaluate modern JavaScript frameworks that generate markup dynamically.

puppeteer features and specs

  • Headless Browsing
    Puppeteer allows headless browsing, which means you can automate and test web applications without opening a browser user interface, resulting in faster execution and lower resource usage.
  • Full Browser Control
    Enables full control over Chrome or Chromium browsers, allowing for comprehensive browser testing and automation, including taking screenshots, generating PDFs, and capturing web pages.
  • Rich API
    Offers a rich set of APIs that can control browsers, manage cookies, intercept network requests, and handle various browser events, making it versatile for different use cases.
  • Active Community
    Highly active open-source community with regular updates and a plethora of plugins and extensions, providing robust support and continuous improvements.
  • Compatibility
    Supports the latest JavaScript features and works seamlessly with popular libraries and frameworks, providing a modern development experience.

Possible disadvantages of puppeteer

  • Restricted to Chrome/Chromium
    Puppeteer is primarily designed to work with Chrome and Chromium browsers, limiting cross-browser testing capabilities compared to other tools that support multiple browsers.
  • Resource Intensive
    Running multiple instances of headless browsers can be resource-intensive in terms of CPU and memory usage, potentially affecting performance on limited hardware.
  • Learning Curve
    Requires some learning curve for developers unfamiliar with browser automation or the Puppeteer API, making initial setup and usage potentially time-consuming.
  • Lacks JavaScript Redaction
    Unlike some other tools, Puppeteer does not natively support JavaScript error redaction, which means developers must manage error handling and debugging themselves.
  • Not Ideal for GUI Tests
    Since Puppeteer is headless by default, it might not be ideal for GUI end-to-end tests that require visual validation, requiring additional tools or configurations to enable full browser displays.

W3C Markup Validation Service videos

+ Add

A Walkthrough the W3C Markup Validation Service

puppeteer videos

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Puppeteer - Video Review

More videos:

  • Review - GameSpot Reviews - Puppeteer
  • Review - CGR Undertow - PUPPETEER review for PlayStation 3

Category Popularity

0-100% (relative to W3C Markup Validation Service and puppeteer)

W3C Markup Validation Service

puppeteer

SEO
100 100%
SEO
0% 0
Automated Testing
0 0%
Automated Testing
100% 100
SEO Tools
100 100%
SEO Tools
0% 0
Browser Testing
0 0%
Browser Testing
100% 100

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare W3C Markup Validation Service and puppeteer

W3C Markup Validation Service Reviews

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puppeteer Reviews

Top Selenium Alternatives
Puppeteer offers more direct and tighter integration with Chrome or Chromium through the DevTools Protocol, unlike Selenium which abstracts the browser interaction through WebDriver, making it more versatile across different browsers but potentially less optimized for specific browser internals like those Puppeteer accesses in Chrome.
Source: bugbug.io
Best Data Scraping Tools
It is completely free. Puppeteer is well backed and supported by Google Chrome and hence replacing Selenium and PhantomJS. It automatically installs an efficient, compatible Chromium binary in its setup, therefore reducing the burden of keeping track on your browser.
Source: pamelaewallaceu.medium.com
Puppeteer vs Selenium
If you're looking for a better alternative, try Endtest. It has Puppeteer's speed, it supports Selenium's browsers AND it has all the features that they're missing.
Source: dev.to
Introduction to Headless Browser Testing
The Puppeteer API can be used to take screenshots, create PDFs, navigate pages, and fetch information from pages. We’ll write some example code to see Puppeteer in action.
Source: blog.logrocket.com

Social recommendations and mentions

puppeteer might be a bit more popular than W3C Markup Validation Service. We know about 106 links to it since March 2021 and only 98 links to W3C Markup Validation Service. 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.

W3C Markup Validation Service mentions (98)

  • HTML Validation
    How to use HTML Validation service 👇 Step 1: Access the HTML validator ● Open the HTML validator in your web browser i.e go to https://validator.w3.org/. - Source: dev.to / 4 months ago
  • WebKit Fix: Quirk News.Y Combinator to Skip TextAutoSizing
    Looking at the html of HN's pages, can't blame them really. Running though https://validator.w3.org/ , the result is abysmal. At this rate, if web browsers started requiring sites to output HTML that is somewhere in the realm of normalcy, HN would sooner shut down than consider ever updating. - Source: Hacker News / 11 months ago
  • We Need to Talk More About Conformance, If We Want to Stop Fantasy HTML
    Whether you’re a frontend developer, lead, or manager, reconsider your expectations and practices if you haven’t yet chosen not to ship erroneous HTML. The more of us decide to talk about using actual HTML on our sites and in our apps, and lead by example, the better for our users and clients, and the better for our craft and profession. On the engineering side of web development, it’s HTML first—if it is HTML. - Source: dev.to / 12 months ago
  • What is cross-browser compatibility, and why should you care?
    Validate Your Code Include tools like W3C code validation service and CSS validator to ensure your code meets web standards. - Source: dev.to / about 1 year ago
  • What You Need to Know About Domain and Hosting
    ===> Click here to run your code through the HTML validator. - Source: dev.to / over 1 year ago
View more

puppeteer mentions (106)

  • Top React Testing Libraries in 2025
    Puppeteer is a headless browser automation tool built on Chromium. It allows developers to simulate user interactions, capture screenshots, and perform UI tests with a high degree of accuracy. Puppeteer is particularly useful for testing cross-browser compatibility and visual elements in React applications. Its robust API enables precise control over browser actions, making it a valuable tool for UI testing and... - Source: dev.to / about 2 months ago
  • End-to-End SEO Testing with Playwright and Lighthouse
    Vitest is a next-generation JavaScript testing framework powered by Vite. It’s an excellent alternative to Jest, offering native TypeScript support, a fast setup, and solid performance. However, while it has an experimental headless browser, it’s not ideal for advanced scenarios like running SEO audits in CI/CD pipelines. Instead, we can pair Vitest with Pupetter, a more mature tool for headless browser automation. - Source: dev.to / 2 months ago
  • The Puppeteer Language Experiment
    This project tests how the browser language can be changed with Puppeteer. It implements multiple options to set the language of Chrome and checks each option against BrowserLeaks to see how it affected the JavaScript proeprties and HTTP headers available by the browser. For more information, see my article The Puppeteer Language Experiment on DEV.to. - Source: dev.to / about 1 year ago
  • Scrapy Vs. Crawlee
    In Crawlee, you can scrape JavaScript rendered websites using the built-in headless Puppeteer and Playwright browsers. It is important to note that, by default, Crawlee scrapes in headless mode. If you don't want headless, then just set headless: false. - Source: dev.to / about 1 year ago
  • Sometimes things simply don't work
    I am not in any way associated with the developers at puppeteer, but if you are looking for a way to contribute, they are open source. - Source: dev.to / about 1 year ago
View more

What are some alternatives?

When comparing W3C Markup Validation Service and puppeteer, you can also consider the following products

Rocket Validator - Site-wide Accessibility and HTML validation made easy. With a single click, Rocket Validator will check thousands of web pages on your site for Accessibility and HTML conformance, producing a detailed, actionable report on seconds.

Selenium - Selenium automates browsers. That's it! What you do with that power is entirely up to you. Primarily, it is for automating web applications for testing purposes, but is certainly not limited to just that.

PageSpeed Insights - PageSpeed is addon for ...

Cypress.io - Slow, difficult and unreliable testing for anything that runs in a browser. Install Cypress in seconds and take the pain out of front-end testing.

Total Validator - Total Validator can check your website to help ensure that it is accessible, uses valid HTML and CSS, has no broken links, and is free from spelling mistakes.

Playwright - Playwright is automation software for Chromium, Firefox, Webkit using the Node.js library having a single API in place.

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