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comirnaty.com screenshot

Report Summary

  • 89

    Performance

    Renders faster than
    90% of other websites

  • 98

    Accessibility

    Visual factors better than
    that of 94% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

comirnaty.com

Pfizer-BioNTech COVID-19 Vaccine, Bivalent | Official Site

Page Load Speed

1.3 sec in total

First Response

328 ms

Resources Loaded

923 ms

Page Rendered

73 ms

comirnaty.com screenshot

About Website

Click here to check amazing Comirnaty content for United States. Otherwise, check out these important facts you probably never knew about comirnaty.com

See authorized use for Pfizer-BioNTech COVID-19 Vaccine, Bivalent (Original and Omicron BA.4/BA.5).

Visit comirnaty.com

Key Findings

We analyzed Comirnaty.com page load time and found that the first response time was 328 ms and then it took 996 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

comirnaty.com performance score

89

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.6 s

63/100

10%

LCP (Largest Contentful Paint)

Value2.8 s

84/100

25%

SI (Speed Index)

Value4.6 s

71/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value2.8 s

97/100

10%

Network Requests Diagram

www.covidvaxoption.com

328 ms

styles.css

186 ms

media_1b227088a371cf830f5426fb3404ce22bb21a2a3b.png

136 ms

media_1037855670932aa48509d0f7fa64549080bfe8512.png

151 ms

media_18886a7bd9756f4a065265e086eb9ae9d3a614c70.png

150 ms

Our browser made a total of 5 requests to load all elements on the main page. We found that all of those requests were addressed to Comirnaty.com and no external sources were called. The less responsive or slowest element that took the longest time to load (328 ms) relates to the external source Covidvaxoption.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 11.6 kB (3%)

Content Size

453.6 kB

After Optimization

442.0 kB

  • HTML
  • Images

In fact, the total size of Comirnaty.com main page is 453.6 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. Only 5% of websites need less resources to load. Images take 443.0 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 7.8 kB

  • Original 10.6 kB
  • After minification 9.1 kB
  • After compression 2.8 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. This page needs HTML code to be minified as it can gain 1.5 kB, which is 14% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 7.8 kB or 74% of the original size.

Image Optimization

-1%

Potential reduce by 3.8 kB

  • Original 443.0 kB
  • After minification 439.2 kB

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. Comirnaty images are well optimized though.

Requests Breakdown

We found no issues to fix!

Requests Now

4

After Optimization

4

  • Images
  • CSS

The browser has sent 4 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Comirnaty. According to our analytics all requests are already optimized.

Network Requests Diagram

www.covidvaxoption.com

www.covidvaxoption.com

328 ms

styles.css

styles.css

186 ms

media_1b227088a371cf830f5426fb3404ce22bb21a2a3b.png

media_1b227088a371cf830f5426fb3404ce22bb21a2a3b.png

136 ms

media_1037855670932aa48509d0f7fa64549080bfe8512.png

media_1037855670932aa48509d0f7fa64549080bfe8512.png

151 ms

media_18886a7bd9756f4a065265e086eb9ae9d3a614c70.png

media_18886a7bd9756f4a065265e086eb9ae9d3a614c70.png

150 ms

Accessibility Review

comirnaty.com accessibility score

98

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

comirnaty.com best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

General

Impact

Issue

High

Page has valid source maps

SEO Factors

comirnaty.com SEO score

100

Search Engine Optimization Advices

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Comirnaty.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Comirnaty.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

comirnaty.com

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