Access stmarksschool.org. Home

name

value

score

weighting

FCP (First Contentful Paint)

Value4.4 s

17/100

10%

LCP (Largest Contentful Paint)

Value22.2 s

0/100

25%

SI (Speed Index)

Value11.5 s

5/100

10%

TBT (Total Blocking Time)

Value2,870 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value0.417

23/100

15%

TTI (Time to Interactive)

Value24.9 s

0/100

10%

stmarksschool.org

31 ms

www.stmarksschool.org

933 ms

dc.js

34 ms

si_behaviors-c.js

91 ms

si_onload.js

56 ms

Our browser made a total of 106 requests to load all elements on the main page. We found that 87% of them (92 requests) were addressed to the original Stmarksschool.org, 5% (5 requests) were made to Fonts.gstatic.com and 2% (2 requests) were made to Stats.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Stmarksschool.org.

Content Size

10.0 MB

After Optimization

8.7 MB

In fact, the total size of Stmarksschool.org main page is 10.0 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. Only a small number of websites need less resources to load. Images take 9.7 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 50.1 kB

Original 62.2 kB
After minification 62.1 kB
After compression 12.2 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 50.1 kB or 80% of the original size.

Image Optimization

-12%

Potential reduce by 1.1 MB

Original 9.7 MB
After minification 8.6 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. Obviously, St Mark S School needs image optimization as it can save up to 1.1 MB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-34%

Potential reduce by 48.9 kB

Original 142.8 kB
After minification 142.7 kB
After compression 93.9 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 48.9 kB or 34% of the original size.

CSS Optimization

-82%

Potential reduce by 125.9 kB

Original 154.1 kB
After minification 114.2 kB
After compression 28.2 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Stmarksschool.org needs all CSS files to be minified and compressed as it can save up to 125.9 kB or 82% of the original size.

Requests Now

After Optimization

The browser has sent 94 CSS, Javascripts, AJAX and image requests in order to completely render the main page of St Mark S School. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and from 20 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

High

[aria-*] attributes do not match their roles

High

ARIA input fields do not have accessible names

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

High

Buttons do not have an accessible name

High

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

Search Engine Optimization Advices

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

High

Links are not crawlable

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

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/).

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

Language Detected

EN
Language Claimed

N/A
Encoding

ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Stmarksschool.org 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 Stmarksschool.org main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

stmarksschool.org

Open Graph description is not detected on the main page of St Mark S School. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks:

Report Summary

Performance

Accessibility

Best Practices

SEO

Home - St. Mark's School

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

stmarksschool.org

www.stmarksschool.org

dc.js

si_behaviors-c.js

si_onload.js

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

stmarksschool.org

www.stmarksschool.org

dc.js

si_behaviors-c.js

si_onload.js

jquery.min.js

jquery.hammer-full.min.js

jquery.timer.js

jquery-migrate-1.2.1.js

jquery.min.js

LinkedGallery.js

appendAround.js

matchMedia.js

matchMedia.addListener.js

responsive-nav.min.js

responsive.js

jquery_onload.js

enquire2.1.0.min.js

IncludesHtm_HeadTags_LocalCss_ScreenMedia

gallery.css

academics.css

athletics.css

directory.css

notes.css

responsive.css

home.js

home.css

conversion.js

news.css

calendar.css

fonts-a5d4f2453ad2d07c05806ae2b7195e1675949aae.css

reset-87b9077e4bf509c7c142d20f71e3a863712723e4.css

structure-36e993f31c2ae19c420f7f95b6646cff639ae450.css

navigation-27c900a21c41fdd9ab6d21bb86ee86c80bafcd37.css

html-f37f62898387f28c84e91f5af4ae9afa9b7c063e.css

misc-6dbe8ad7dae4e7d19e246e98594861d5d61e96a8.css

module-8fcd11f120506cd983f7feb24502b5049a07fc97.css

directory.css

css

headerlion.png

aboutphotowithtext1.png

admissionsphotowithtext3.png

academicsphotowithtext21.png