Tools & Wizards About Us

Report Summary

  • 9

    Performance

    Renders faster than
    23% of other websites

  • 98

    Accessibility

    Visual factors better than
    that of 94% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

windowsdefender.com

Windows Security: System Guard, Antivirus & More for Windows 11 | Microsoft

Page Load Speed

2.7 sec in total

First Response

188 ms

Resources Loaded

1.8 sec

Page Rendered

661 ms

About Website

Click here to check amazing Windows Defender content. Otherwise, check out these important facts you probably never knew about windowsdefender.com

Protect your data and devices with Windows Security. Get next-gen antivirus, malware defense, and tracking prevention with System Guard, the new Windows Defender.

Visit windowsdefender.com

Key Findings

We analyzed Windowsdefender.com page load time and found that the first response time was 188 ms and then it took 2.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

windowsdefender.com performance score

9

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.8 s

0/100

10%

LCP (Largest Contentful Paint)

Value21.9 s

0/100

25%

SI (Speed Index)

Value15.2 s

1/100

10%

TBT (Total Blocking Time)

Value1,100 ms

24/100

30%

CLS (Cumulative Layout Shift)

Value0.653

8/100

15%

TTI (Time to Interactive)

Value23.0 s

1/100

10%

Network Requests Diagram

comprehensive-security

188 ms

Jquery.js

22 ms

oneplayeriframe.js

172 ms

Globalstyles.css

49 ms

mwf-main.min.css

620 ms

Our browser made a total of 63 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Windowsdefender.com, 24% (15 requests) were made to Assets.adobedtm.com and 14% (9 requests) were made to Microsoft.com. The less responsive or slowest element that took the longest time to load (801 ms) relates to the external source Img-prod-cms-rt-microsoft-com.akamaized.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 559.7 kB (16%)

Content Size

3.5 MB

After Optimization

3.0 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Windowsdefender.com main page is 3.5 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 70% of websites need less resources to load. Images take 2.9 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 298.9 kB

  • Original 350.8 kB
  • After minification 317.1 kB
  • After compression 51.9 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 298.9 kB or 85% of the original size.

Image Optimization

-3%

Potential reduce by 75.1 kB

  • Original 2.9 MB
  • After minification 2.8 MB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Windows Defender images are well optimized though.

JavaScript Optimization

-67%

Potential reduce by 185.7 kB

  • Original 276.4 kB
  • After minification 268.8 kB
  • After compression 90.7 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 185.7 kB or 67% of the original size.

Requests Breakdown

Number of requests can be reduced by 21 (38%)

Requests Now

55

After Optimization

34

  • Images
  • JavaScript
  • CSS

The browser has sent 55 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Windows Defender. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 22 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

windowsdefender.com accessibility score

98

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Some elements have a [tabindex] value greater than 0

Best Practices

windowsdefender.com best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

windowsdefender.com SEO score

91

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

Mobile Friendly

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Windowsdefender.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Windowsdefender.com main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

Open Graph data is detected on the main page of Windows Defender. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: