Access duoservers.com.

name

value

score

weighting

FCP (First Contentful Paint)

Value0.7 s

100/100

10%

LCP (Largest Contentful Paint)

Value0.8 s

100/100

25%

SI (Speed Index)

Value0.7 s

100/100

10%

TBT (Total Blocking Time)

Value20 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value0.8 s

100/100

10%

duoservers.com

113 ms

attention.gif

30 ms

Our browser made a total of 2 requests to load all elements on the main page. We found that all of those requests were addressed to Duoservers.com and no external sources were called. The less responsive or slowest element that took the longest time to load (113 ms) belongs to the original domain Duoservers.com.

Content Size

627 B

After Optimization

304 B

In fact, the total size of Duoservers.com main page is 627 B. This result falls within the top 5000 of lightweight and thus fast loading web pages. Only a small number of websites need less resources to load. HTML takes 627 B which makes up the majority of the site volume.

HTML Optimization

-52%

Potential reduce by 323 B

Original 627 B
After minification 539 B
After compression 304 B

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 88 B, 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 323 B or 52% of the original size.

Requests Now

After Optimization

The browser has sent 1 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Duoservers. According to our analytics all requests are already optimized.

Accessibility Issues

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

High

Document doesn't have a <title> element

High

Image elements do not have [alt] attributes

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

High

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

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Search Engine Optimization Advices

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

High

Document doesn't have a <title> element

High

Image elements do not have [alt] attributes

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

High

robots.txt is not valid

Language and Encoding

Language Detected

N/A
Language Claimed

N/A
Encoding

N/A

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Duoservers.com 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 Duoservers.com main page’s claimed encoding is . 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

duoservers.com

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