Report Summary

  • 33

    Performance

    Renders faster than
    53% of other websites

  • 66

    Accessibility

    Visual factors better than
    that of 31% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

trw.cz

TRW Automotive Aftermarket | Auto Car Parts

Page Load Speed

4.4 sec in total

First Response

439 ms

Resources Loaded

3.7 sec

Page Rendered

221 ms

trw.cz screenshot

About Website

Click here to check amazing TRW content. Otherwise, check out these important facts you probably never knew about trw.cz

TRW Aftermarket - a global leader in auto parts for the aftermarket. Premium quality car parts for maximum safety.

Visit trw.cz

Key Findings

We analyzed Trw.cz page load time and found that the first response time was 439 ms and then it took 4 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

trw.cz performance score

33

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

26/100

10%

LCP (Largest Contentful Paint)

Value10.5 s

0/100

25%

SI (Speed Index)

Value9.9 s

10/100

10%

TBT (Total Blocking Time)

Value620 ms

48/100

30%

CLS (Cumulative Layout Shift)

Value0.059

98/100

15%

TTI (Time to Interactive)

Value16.7 s

5/100

10%

Network Requests Diagram

www.trwaftermarket.com

439 ms

237 ms

less

217 ms

main

432 ms

cookie-consent-manager.css

345 ms

Our browser made a total of 77 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Trw.cz, 6% (5 requests) were made to Zf-aftermarket.piwik.pro and 1% (1 request) were made to Connect.facebook.net. The less responsive or slowest element that took the longest time to load (1.3 sec) relates to the external source Trwaftermarket.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 133.5 kB (26%)

Content Size

507.7 kB

After Optimization

374.3 kB

In fact, the total size of Trw.cz main page is 507.7 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 45% of websites need less resources to load. Images take 273.8 kB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 103.0 kB

  • Original 121.7 kB
  • After minification 107.3 kB
  • After compression 18.6 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 14.4 kB, which is 12% 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 103.0 kB or 85% of the original size.

Image Optimization

-9%

Potential reduce by 24.9 kB

  • Original 273.8 kB
  • After minification 248.9 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. TRW images are well optimized though.

JavaScript Optimization

-5%

Potential reduce by 5.3 kB

  • Original 109.7 kB
  • After minification 109.7 kB
  • After compression 104.4 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. This website has mostly compressed JavaScripts.

CSS Optimization

-9%

Potential reduce by 218 B

  • Original 2.5 kB
  • After minification 2.5 kB
  • After compression 2.3 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. Trw.cz has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 34 (54%)

Requests Now

63

After Optimization

29

The browser has sent 63 CSS, Javascripts, AJAX and image requests in order to completely render the main page of TRW. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

trw.cz accessibility score

66

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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.

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

trw.cz 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

trw.cz SEO score

75

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

Links do not have descriptive text

High

Image elements do not have [alt] attributes

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Trw.cz 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 Trw.cz 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 description is not detected on the main page of TRW. 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: