Report Summary

  • 62

    Performance

    Renders faster than
    77% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 72% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 85

    SEO

    Google-friendlier than
    56% of websites

carb.ibch.ru

Roundcube Webmail :: Welcome to Roundcube Webmail

Page Load Speed

2.3 sec in total

First Response

871 ms

Resources Loaded

1.3 sec

Page Rendered

135 ms

carb.ibch.ru screenshot

About Website

Welcome to carb.ibch.ru homepage info - get ready to check Carb Ibch best content for Russia right away, or after learning these important things about carb.ibch.ru

Laboratory of Carbohydrate Chemistry. Institute of Bioorganic Chemistry. Russian Academy of Sciences. Moscow. Russia.

Visit carb.ibch.ru

Key Findings

We analyzed Carb.ibch.ru page load time and found that the first response time was 871 ms and then it took 1.5 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

carb.ibch.ru performance score

62

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.6 s

6/100

10%

LCP (Largest Contentful Paint)

Value5.6 s

18/100

25%

SI (Speed Index)

Value5.7 s

52/100

10%

TBT (Total Blocking Time)

Value50 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value5.7 s

69/100

10%

Network Requests Diagram

carb.ibch.ru

871 ms

style.css

316 ms

menu.css

314 ms

carblab.gif

465 ms

trans.gif

357 ms

Our browser made a total of 9 requests to load all elements on the main page. We found that all of those requests were addressed to Carb.ibch.ru and no external sources were called. The less responsive or slowest element that took the longest time to load (871 ms) belongs to the original domain Carb.ibch.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 9.8 kB (39%)

Content Size

25.3 kB

After Optimization

15.6 kB

In fact, the total size of Carb.ibch.ru main page is 25.3 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. Images take 12.8 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 8.1 kB

  • Original 10.4 kB
  • After minification 10.4 kB
  • After compression 2.3 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 8.1 kB or 78% of the original size.

Image Optimization

-1%

Potential reduce by 96 B

  • Original 12.8 kB
  • After minification 12.8 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. Carb Ibch images are well optimized though.

CSS Optimization

-75%

Potential reduce by 1.6 kB

  • Original 2.1 kB
  • After minification 1.9 kB
  • After compression 513 B

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. Carb.ibch.ru needs all CSS files to be minified and compressed as it can save up to 1.6 kB or 75% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

8

After Optimization

8

The browser has sent 8 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Carb Ibch. According to our analytics all requests are already optimized.

Accessibility Review

carb.ibch.ru accessibility score

89

Accessibility Issues

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

carb.ibch.ru 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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

carb.ibch.ru SEO score

85

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Page is blocked from indexing

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    N/A

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Carb.ibch.ru 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 Carb.ibch.ru 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

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