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name

value

score

weighting

FCP (First Contentful Paint)

Value2.6 s

63/100

10%

LCP (Largest Contentful Paint)

Value2.7 s

85/100

25%

SI (Speed Index)

Value3.3 s

91/100

10%

TBT (Total Blocking Time)

Value110 ms

98/100

30%

CLS (Cumulative Layout Shift)

Value0.073

95/100

15%

TTI (Time to Interactive)

Value3.0 s

96/100

10%

duste.com

427 ms

get_flash_blue.gif

94 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 Duste.com and no external sources were called. The less responsive or slowest element that took the longest time to load (427 ms) belongs to the original domain Duste.com.

Content Size

7.6 kB

After Optimization

2.0 kB

In fact, the total size of Duste.com main page is 7.6 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. HTML takes 7.6 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 5.6 kB

Original 7.6 kB
After minification 6.8 kB
After compression 2.0 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 803 B, which is 11% 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 5.6 kB or 74% 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 Duste. According to our analytics all requests are already optimized.

Accessibility Issues

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

Image elements do not have [alt] attributes

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

High

Serves images with low resolution

Low

Detected JavaScript libraries

Search Engine Optimization Advices

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

High

Page is blocked from indexing

High

robots.txt is not valid

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

High

Image elements do not have [alt] attributes

Language and Encoding

Language Detected

FR
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 Duste.com can be misinterpreted by Google and other search engines. Our service has detected that French 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 Duste.com 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

duste.com

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