Report Summary

  • 100


    Renders faster than
    97% of other websites

  • 91


    Visual factors better than
    that of 78% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 67


    Google-friendlier than
    25% of websites

IIS Windows Server 115

Page Load Speed

25.6 sec in total

First Response

1.8 sec

Resources Loaded

23.4 sec

Page Rendered

452 ms screenshot

About Website

Click here to check amazing Doncase content for Russia. Otherwise, check out these important facts you probably never knew about

В магазине "Дон Чехол - магазин мобильных аксессуаров" представлены аксессуары для смартфонов и планшетов. Помимо чехлов здесь можно купить зарядные устройства, пленки на экран, кабели, аккумуляторы и...


Key Findings

We analyzed page load time and found that the first response time was 1.8 sec and then it took 23.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics performance score


Measured Metrics





FCP (First Contentful Paint)

Value0.6 s



LCP (Largest Contentful Paint)

Value1.2 s



SI (Speed Index)

Value1.1 s



TBT (Total Blocking Time)

Value0 ms



CLS (Cumulative Layout Shift)




TTI (Time to Interactive)

Value0.6 s



Network Requests Diagram

1818 ms


412 ms


1039 ms


406 ms


404 ms

Our browser made a total of 440 requests to load all elements on the main page. We found that 92% of them (404 requests) were addressed to the original, 3% (13 requests) were made to and 0% (2 requests) were made to The less responsive or slowest element that took the longest time to load (20.1 sec) relates to the external source

Page Optimization Overview & Recommendations

Page size can be reduced by 2.7 MB (80%)

Content Size

3.4 MB

After Optimization

666.7 kB

In fact, the total size of main page is 3.4 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. Javascripts take 2.5 MB which makes up the majority of the site volume.

HTML Optimization


Potential reduce by 239.9 kB

  • Original 260.9 kB
  • After minification 169.2 kB
  • After compression 21.1 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 91.7 kB, which is 35% 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 239.9 kB or 92% of the original size.

Image Optimization


Potential reduce by 29.2 kB

  • Original 256.5 kB
  • After minification 227.3 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. Obviously, Doncase needs image optimization as it can save up to 29.2 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization


Potential reduce by 2.2 MB

  • Original 2.5 MB
  • After minification 1.2 MB
  • After compression 349.6 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 2.2 MB or 86% of the original size.

CSS Optimization


Potential reduce by 256.3 kB

  • Original 325.1 kB
  • After minification 261.1 kB
  • After compression 68.8 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. needs all CSS files to be minified and compressed as it can save up to 256.3 kB or 79% of the original size.

Requests Breakdown

Number of requests can be reduced by 384 (88%)

Requests Now


After Optimization


The browser has sent 435 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Doncase. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 278 to 1 for JavaScripts and from 108 to 1 for CSS and as a result speed up the page load time.

Accessibility Review accessibility score


Accessibility Issues

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.




<html> element does not have a [lang] attribute

Best Practices best practices score


Areas of Improvement

Trust and Safety




Does not use HTTPS


Ensure CSP is effective against XSS attacks

User Experience




Serves images with low resolution

SEO Factors SEO score


Search Engine Optimization Advices

Language and Encoding

  • Language Detected


  • Language Claimed


  • Encoding


Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else) and no language is claimed in <html> or <meta> tags either. Our system also found out that 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 Doncase. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: