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HTML Validator VS WebPagetest

Compare HTML Validator VS WebPagetest and see what are their differences

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HTML Validator logo HTML Validator

HTML Validator is a Mozilla extension that adds HTML validation inside Firefox and Mozilla.

WebPagetest logo WebPagetest

Run a free website speed test from multiple locations around the globe using real browsers...
  • HTML Validator Landing page
    Landing page //
    2019-06-07
  • WebPagetest Landing page
    Landing page //
    2023-07-05

HTML Validator videos

+ Add

Let's have a look at CSE HTML Validator Lite

More videos:

  • Demo - CSE HTML Validator Professional quick demo

WebPagetest videos

+ Add

WebPageTest - The State of the Web

More videos:

  • Tutorial - How To Use WebPageTest.org - For Beginners

Category Popularity

0-100% (relative to HTML Validator and WebPagetest)

HTML Validator

WebPagetest

SEO
100 100%
SEO
0% 0
Website Monitoring
19 19%
Website Monitoring
81% 81
SEO Tools
100 100%
SEO Tools
0% 0
Performance Monitoring
0 0%
Performance Monitoring
100% 100

User comments

Share your experience with using HTML Validator and WebPagetest. For example, how are they different and which one is better?
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Social recommendations and mentions

Based on our record, WebPagetest seems to be more popular. It has been mentiond 51 times since March 2021. 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.

HTML Validator mentions (0)

We have not tracked any mentions of HTML Validator yet. Tracking of HTML Validator recommendations started around Mar 2021.

WebPagetest mentions (51)

  • A PageSpeed insight report, but for every page in your domain
    Trust neither. The most optimal option I've found is webpagetest.org Its been quite handy lately. This tool does look interesting. Source: 12 months ago
  • How are you all accurately checking your website load time? Not sure PageSpeedInsights is very helpful.
    Webpagetest.org is another. Pagespeedinsights and lighthouse are great for identifying page load issues to fix, but actual page load times will always vary between the user and your web server. Universal analytics has some page load timings but that's going away soon and nothing afaik is in GA4. I've seen an example of building a page load timer in tag manager and dumping the results into an event. Source: about 1 year ago
  • Extreme confusing over Speed Index results -- webpagetest.org
    So I am working on rebuilding our company's site with a new stack. I am running tests using webpagetest.org, and I am having trouble fully understanding the speed index results as well as the film strip view. The page renders quite fast everywhere I test it. Google Lighthouse shows it in the 90s + for performance score, however when I test the page on webpagetest, I get load times of 77 seconds (NOT MS) which is... Source: about 1 year ago
  • Does anyone else experience pure ecstasy when they get 100 on Lighthouse? 😩
    Webpagetest.org is great, and checking OP's site they have done an incredible job, I don't think I have ever made or seen an Ecom site this slick. Super clean waterfall view. Source: about 1 year ago
  • Performance scores for Google Lighthouse/Insights seem to be very inaccurate
    Thanks for the recommendation regarding webpagetest.org, another user made a similar recommendation so I will check it out. Source: about 1 year ago
View more

What are some alternatives?

When comparing HTML Validator and WebPagetest, you can also consider the following products

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.

GTmetrix - GTmetrix is a free tool that analyzes your page's speed performance. Using PageSpeed and YSlow, GTmetrix generates scores for your pages and offers actionable recommendations on how to fix them.

W3C Markup Validation Service - Validates HTML markup of web pages, one at a time.

PageSpeed Insights - PageSpeed is addon for ...

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.

Google Lighthouse - Lighthouse is an open-source, automated tool for improving the quality of web pages.

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