Report Summary

  • 21

    Performance

    Renders faster than
    40% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 82% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 91

    SEO

    Google-friendlier than
    71% of websites

asf.edu.mx

Home - The American School Foundation

Page Load Speed

2.4 sec in total

First Response

708 ms

Resources Loaded

1.4 sec

Page Rendered

348 ms

asf.edu.mx screenshot

About Website

Welcome to asf.edu.mx homepage info - get ready to check Asf best content for Mexico right away, or after learning these important things about asf.edu.mx

The American School Foundation is a non-profit organization that delivers a high-quality American independent education to international and Mexican students.

Visit asf.edu.mx

Key Findings

We analyzed Asf.edu.mx page load time and found that the first response time was 708 ms and then it took 1.7 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

asf.edu.mx performance score

21

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

30/100

10%

LCP (Largest Contentful Paint)

Value10.0 s

0/100

25%

SI (Speed Index)

Value7.4 s

27/100

10%

TBT (Total Blocking Time)

Value2,520 ms

4/100

30%

CLS (Cumulative Layout Shift)

Value0.098

90/100

15%

TTI (Time to Interactive)

Value19.4 s

2/100

10%

Network Requests Diagram

index.aspx

708 ms

dc.js

31 ms

si_behaviors-c.js

43 ms

si_onload.js

26 ms

jquery.min.js

41 ms

Our browser made a total of 74 requests to load all elements on the main page. We found that 85% of them (63 requests) were addressed to the original Asf.edu.mx, 7% (5 requests) were made to Fonts.gstatic.com and 4% (3 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (708 ms) belongs to the original domain Asf.edu.mx.

Page Optimization Overview & Recommendations

Page size can be reduced by 485.3 kB (15%)

Content Size

3.3 MB

After Optimization

2.8 MB

In fact, the total size of Asf.edu.mx main page is 3.3 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. 60% of websites need less resources to load. Images take 2.9 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 25.9 kB

  • Original 32.5 kB
  • After minification 28.7 kB
  • After compression 6.6 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 3.8 kB, which is 12% 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 25.9 kB or 80% of the original size.

Image Optimization

-6%

Potential reduce by 181.4 kB

  • Original 2.9 MB
  • After minification 2.7 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. Asf images are well optimized though.

JavaScript Optimization

-69%

Potential reduce by 130.5 kB

  • Original 190.0 kB
  • After minification 177.1 kB
  • After compression 59.5 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 130.5 kB or 69% of the original size.

CSS Optimization

-85%

Potential reduce by 147.5 kB

  • Original 173.4 kB
  • After minification 78.9 kB
  • After compression 25.9 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. Asf.edu.mx needs all CSS files to be minified and compressed as it can save up to 147.5 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 34 (52%)

Requests Now

66

After Optimization

32

The browser has sent 66 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Asf. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 24 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

asf.edu.mx accessibility score

93

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

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

Names and labels

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.

Impact

Issue

High

Links do not have a discernible name

Tables and lists

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

Impact

Issue

High

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

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

asf.edu.mx best practices score

75

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

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

asf.edu.mx 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

    N/A

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Asf.edu.mx 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 Asf.edu.mx 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

Open Graph description is not detected on the main page of Asf. 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: