Report Summary

  • 73

    Performance

    Renders faster than
    83% of other websites

  • 61

    Accessibility

    Visual factors better than
    that of 27% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

centa.info

CENTA Power Transmission - USA

Page Load Speed

4.3 sec in total

First Response

828 ms

Resources Loaded

3.2 sec

Page Rendered

323 ms

centa.info screenshot

About Website

Visit centa.info now to see the best up-to-date CENTA content and also check out these interesting facts you probably never knew about centa.info

CENTA ++ drive technology supplier + leading producer of flexible couplings for industrial, marine and power generating applications +++

Visit centa.info

Key Findings

We analyzed Centa.info page load time and found that the first response time was 828 ms and then it took 3.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

centa.info performance score

73

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.6 s

63/100

10%

LCP (Largest Contentful Paint)

Value5.0 s

26/100

25%

SI (Speed Index)

Value4.4 s

74/100

10%

TBT (Total Blocking Time)

Value70 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value4.3 s

84/100

10%

Network Requests Diagram

centa.info

828 ms

screen.css

357 ms

jquery.js

715 ms

thickbox.js

356 ms

jquery-1.7.1.min.js

544 ms

Our browser made a total of 66 requests to load all elements on the main page. We found that all of those requests were addressed to Centa.info and no external sources were called. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Centa.info.

Page Optimization Overview & Recommendations

Page size can be reduced by 539.6 kB (44%)

Content Size

1.2 MB

After Optimization

676.2 kB

In fact, the total size of Centa.info main page is 1.2 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. 40% of websites need less resources to load. Images take 957.7 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 11.2 kB

  • Original 14.4 kB
  • After minification 12.3 kB
  • After compression 3.2 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 2.1 kB, which is 15% 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 11.2 kB or 77% of the original size.

Image Optimization

-38%

Potential reduce by 365.5 kB

  • Original 957.7 kB
  • After minification 592.1 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, CENTA needs image optimization as it can save up to 365.5 kB or 38% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-65%

Potential reduce by 141.4 kB

  • Original 217.3 kB
  • After minification 214.1 kB
  • After compression 75.9 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 141.4 kB or 65% of the original size.

CSS Optimization

-81%

Potential reduce by 21.4 kB

  • Original 26.4 kB
  • After minification 19.8 kB
  • After compression 4.9 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. Centa.info needs all CSS files to be minified and compressed as it can save up to 21.4 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 5 (8%)

Requests Now

64

After Optimization

59

The browser has sent 64 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CENTA. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

centa.info accessibility score

61

Accessibility Issues

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.

Internationalization and localization

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

Impact

Issue

High

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

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

centa.info best practices score

67

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

High

Browser errors were logged to the console

SEO Factors

centa.info SEO score

69

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

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Centa.info 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 Centa.info 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

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