Report Summary

  • 10

    Performance

    Renders faster than
    23% of other websites

  • 74

    Accessibility

    Visual factors better than
    that of 41% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 74

    SEO

    Google-friendlier than
    32% of websites

acs.gr

ACS Athens | Modeling education for the 21st Century

Page Load Speed

5.4 sec in total

First Response

527 ms

Resources Loaded

4.3 sec

Page Rendered

561 ms

acs.gr screenshot

About Website

Visit acs.gr now to see the best up-to-date ACS content for Greece and also check out these interesting facts you probably never knew about acs.gr

ACS American Community Schools of Athens

Visit acs.gr

Key Findings

We analyzed Acs.gr page load time and found that the first response time was 527 ms and then it took 4.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

acs.gr performance score

10

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.2 s

0/100

10%

LCP (Largest Contentful Paint)

Value35.6 s

0/100

25%

SI (Speed Index)

Value16.5 s

0/100

10%

TBT (Total Blocking Time)

Value1,250 ms

19/100

30%

CLS (Cumulative Layout Shift)

Value0.398

25/100

15%

TTI (Time to Interactive)

Value19.1 s

3/100

10%

Network Requests Diagram

www.acs.gr

527 ms

common.css

362 ms

squarespace-gallery-slideshow.css

32 ms

yahoo-dom-event.js

56 ms

connection_core-min.js

52 ms

Our browser made a total of 139 requests to load all elements on the main page. We found that 43% of them (60 requests) were addressed to the original Acs.gr, 29% (41 requests) were made to Static1.1.sqspcdn.com and 9% (13 requests) were made to Clients6.google.com. The less responsive or slowest element that took the longest time to load (2.6 sec) relates to the external source Calendar.google.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 775.4 kB (40%)

Content Size

1.9 MB

After Optimization

1.2 MB

In fact, the total size of Acs.gr main page is 1.9 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. 55% of websites need less resources to load. Images take 1.0 MB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 200.9 kB

  • Original 229.6 kB
  • After minification 178.9 kB
  • After compression 28.7 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 50.6 kB, which is 22% 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 200.9 kB or 87% of the original size.

Image Optimization

-5%

Potential reduce by 45.7 kB

  • Original 1.0 MB
  • After minification 966.6 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. ACS images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 301.9 kB

  • Original 433.2 kB
  • After minification 396.6 kB
  • After compression 131.3 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 301.9 kB or 70% of the original size.

CSS Optimization

-84%

Potential reduce by 226.9 kB

  • Original 268.6 kB
  • After minification 224.7 kB
  • After compression 41.7 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. Acs.gr needs all CSS files to be minified and compressed as it can save up to 226.9 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 73 (54%)

Requests Now

135

After Optimization

62

The browser has sent 135 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ACS. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 43 to 1 for JavaScripts and from 27 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

acs.gr accessibility score

74

Accessibility Issues

ARIA

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.

Impact

Issue

High

[aria-*] attributes do not match their roles

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

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

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

acs.gr 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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

acs.gr SEO score

74

Search Engine Optimization Advices

Content Best Practices

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

Impact

Issue

High

Links do not have descriptive text

High

Image elements do not have [alt] attributes

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 Acs.gr 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 Acs.gr 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 description is not detected on the main page of ACS. 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: