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HTML5test VS Mozilla Firefox

Compare HTML5test VS Mozilla Firefox and see what are their differences

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HTML5test logo HTML5test

HTML5test is a platform that assigns you a score based on how well your browser follows the requirements of the HTML5 standard.

Mozilla Firefox logo Mozilla Firefox

Get the browsers that put your privacy first — and always have
  • HTML5test Landing page
    Landing page //
    2023-09-05
  • Mozilla Firefox Landing page
    Landing page //
    2023-09-01

Get the browser that protects what’s important. No shady privacy policies or back doors for advertisers. Just a lightning fast browser that doesn’t sell you out.

HTML5test features and specs

  • Comprehensive Assessment
    HTML5test provides a detailed evaluation of a web browser's support for HTML5 standards, covering a wide range of features.
  • User-Friendly Interface
    The interface is intuitive and easy to use, allowing users to quickly obtain results about their browser's capabilities.
  • Cross-Browser Comparison
    It allows users to compare scores between different browsers, facilitating informed decisions about which browser to use.
  • Regular Updates
    The site is updated regularly to incorporate the latest HTML standards and browser versions, ensuring relevant test results.

Possible disadvantages of HTML5test

  • Focus on Quantitative Score
    HTML5test focuses on a numeric score that might oversimplify the complexities of feature support and real-world performance.
  • Lack of Contextual Information
    The site does not provide detailed explanations about how missing features might impact user experience or web development.
  • Not Comprehensive for All Users
    While HTML5test is good for basic assessment, it might not be sufficient for advanced developers looking for in-depth analysis of browser capabilities.

Mozilla Firefox features and specs

  • Privacy-Focused
    Firefox places a strong emphasis on user privacy by offering features such as Enhanced Tracking Protection, which blocks a wide range of online trackers.
  • Add-Ons and Extensions
    Firefox supports a wide array of add-ons and extensions, allowing users to customize their browsing experience to a great extent.
  • Open Source
    Being open-source, Firefox's code is transparent and reviewed by the community, helping find and fix vulnerabilities more efficiently.
  • Cross-Platform Syncing
    With a Firefox account, you can sync your bookmarks, history, and open tabs across multiple devices, making it convenient to transition between them.
  • Resource Management
    Firefox has made significant efforts in optimizing its resource management, which translates to better performance and reduced memory usage compared to some other browsers.

Possible disadvantages of Mozilla Firefox

  • Extension Compatibility Issues
    Though Firefox supports numerous extensions, sometimes they can have compatibility issues after updates, requiring developers to make adjustments.
  • Slower Performance on Some Sites
    In some cases, Firefox may perform slightly slower than competitors like Google Chrome, particularly with sites heavily optimized for Chrome.
  • Market Share
    Firefox holds a smaller market share compared to giants like Chrome, which can sometimes result in websites being less optimized for Firefox.
  • Limited Native Features
    Some features that are built-in with other browsers need to be added via extensions in Firefox, potentially making the setup process longer.
  • Frequent Updates
    Though generally positive, Firefox's frequent updates can sometimes introduce bugs or lead to unexpected behavior, needing rapid release fixes.

Analysis of Mozilla Firefox

Overall verdict

  • Yes, Mozilla Firefox is considered a good browser. It balances performance, security, and user-centric features well, which makes it a solid choice for many users.

Why this product is good

  • Mozilla Firefox is widely regarded as a robust web browser due to its strong commitment to user privacy, open-source development, and a high degree of customizability. It offers a variety of features like Enhanced Tracking Protection, customizable UI, and support for numerous add-ons and extensions. Its performance in speed and security updates is consistently appreciated by users who prioritize these aspects.

Recommended for

  • Users who prioritize privacy and data protection
  • Individuals who prefer open-source software
  • Those who like to customize their browsers with add-ons and extensions
  • People seeking a lightweight and efficient browsing experience
  • Users wanting regular updates and community-driven development

HTML5test videos

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Mozilla Firefox videos

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Mozilla Firefox Review

More videos:

  • Review - Firefox Quantum: Chrome Killer? Should You Switch Browsers?
  • Review - Six Reasons I Love Firefox Quantum
  • Review - Firefox Quantum Review: Google Chrome killer?

Category Popularity

0-100% (relative to HTML5test and Mozilla Firefox)

HTML5test

Mozilla Firefox

Online Services
100 100%
Online Services
0% 0
Web Browsers
4 4%
Web Browsers
96% 96
Website Testing
100 100%
Website Testing
0% 0
Security & Privacy
0 0%
Security & Privacy
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 HTML5test and Mozilla Firefox

HTML5test Reviews

We have no reviews of HTML5test yet.
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Mozilla Firefox Reviews

  1. Sabu
    · Technical Support Engineer at Stan MM ·
    Best Online Experience

    I adore Firefox's functionality and the fact that it is open source software that might be created by tens of thousands of people worldwide. You can utilize features that aren't accessible on rival products like Chrome because it is open source.

    👍 Pros:    Open-source|Free|Fast
  2. BibGreen
The 7 best web browsers in 2025
Firefox is a lightweight browser and doesn't require much space or memory, meaning it can operate smoothly even on lean machines. But it doesn't compromise on utility. It's packed with supplementary tools, like a handy PDF editor, a tracker and cookie banner blocker, a read-it-later app, and more. I also like that you can isolate tabs on Firefox so they act in a new,...
Source: zapier.com
The 11 Best Web Browsers Not Based on Chromium
Mozilla Firefox stands out as an open-source browser that prioritizes privacy and customization. As a top choice among browsers not based on Chromium, it has gained a loyal following thanks to its strong focus on user control and security.
Source: stackdiary.com
Avoid The Hack: 6 Best Privacy Browser Picks for Windows
Many tweaks, both basic, and advanced, should be made before Firefox can be considered a private browser. While vanilla - or otherwise un-configured - Firefox is arguably better for privacy than Google Chrome or Microsoft Edge, Firefox doesn't come especially configured for optimal (or maximum) user privacy out-the-box. This isn't a difficult task and just takes a chunk of...
Source: avoidthehack.com
Top browsers: features, comparison and stats (2022)
Mozilla Firefox is the fourth most popular web browser; it currently holds 4.1% of the web browser market share. It was released in 2002 by the Mozilla Foundation and its contributors.
Source: www.stackscale.com
6 Best Browser Alternatives to Google Chrome
You can also expect good performance from Firefox, though you might run into a rare compatibility issue. In general, Firefox is speedy (though not as lean as Edge) and its customizable UI should suit most users. While not the most feature-filled, Firefox has some nice additions not available on Chrome, including containers that let you separate work, shopping, or personal...
Source: gizmodo.com

Social recommendations and mentions

Based on our record, HTML5test seems to be more popular. It has been mentiond 58 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.

HTML5test mentions (58)

  • Ask HN: Kindle Browser Specs?
    Take your Kindle and visit https://html5test.com/ and that should give you a good idea. Spoiler: it scores pretty low but supports JavaScript, which is surprising. PS: You could have gotten this answered more quickly by Googling. - Source: Hacker News / 8 months ago
  • Some questions about RAM, BT and Firefox
    I just don't know what else I can do. I compared Chromium and Firefox in html5test.com, got same result. All browsers says they doesn't support H.265. I turned off HW acceleration, nothing changes. I installed ffmpeg-libs and other codecs from Fedora wiki. Nothing changes. Videos are same vp9 in browsers. I spent all day googling but nothing helpful. Source: almost 2 years ago
  • widevine problem?
    What does https://html5test.com/ say for h.264, VP8, VP9 and Theora support? What does it say for aac, Opus, Vorbis and mp3 support? Source: almost 2 years ago
  • is there a way to get surround sound working on firefox?
    You can use this website also https://html5test.com is really helpful with more datails. Source: almost 2 years ago
  • H265 Browser compatibility
    If I go on html5test.com, no matter which browser I use, H265 support is not enabled and I couldn't find any article online that explains why -- what am I missing here? Source: almost 2 years ago
View more

Mozilla Firefox mentions (0)

We have not tracked any mentions of Mozilla Firefox yet. Tracking of Mozilla Firefox recommendations started around Mar 2021.

What are some alternatives?

When comparing HTML5test and Mozilla Firefox, you can also consider the following products

Can I use - Compatibility tables for support of HTML5, CSS3, SVG and more in desktop and mobile browsers.

Google Chrome - Google Chrome is a fast, secure, and free web browser, built for the modern web. Give it a try on your desktop today.

The Acid3 Test - The Acid3 Test is an online test page developed by the Web Standards Project to help everyone check how compliant a specific browser is with different web standards like JavaScript and Document Object Model.

Brave - Fast and secure, ad and tracker blocking browser.

CrossBrowserTesting - Browser Testing made simple! Run automated, visual, and manual tests on 1500+ real browsers and mobile devices. Test more browsers, in less time.

Vivaldi - Vivaldi is a free, fast web browser designed for power-users. You decide how you browse. Download Vivaldi's fully customisable browser now and browse your way.

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