Tools & Wizards About Us
zfdoc.com screenshot

Report Summary

  • 99

    Performance

    Renders faster than
    96% of other websites

  • 57

    Accessibility

    Visual factors better than
    that of 24% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

zfdoc.com

ZF S6-40 and T-56 6-speed Transmssion Driveline Specialists, Prototype and Manufacturing Services

Page Load Speed

935 ms in total

First Response

129 ms

Resources Loaded

590 ms

Page Rendered

216 ms

zfdoc.com screenshot

About Website

Welcome to zfdoc.com homepage info - get ready to check ZF Doc best content right away, or after learning these important things about zfdoc.com

ZR51 Performance repairs 6-speed manual transmissions (C4 Corvette - ZF 6-speed, C5 and C6 Corvette - T56 and T60 6-speed, Camaro/Firebird - T56 6-speed), spare parts sales, after-market parts design ...

Visit zfdoc.com

Key Findings

We analyzed Zfdoc.com page load time and found that the first response time was 129 ms and then it took 806 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 15% of websites can load faster.

Performance Metrics

zfdoc.com performance score

99

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.6 s

93/100

10%

LCP (Largest Contentful Paint)

Value1.6 s

99/100

25%

SI (Speed Index)

Value1.6 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value1.6 s

100/100

10%

Network Requests Diagram

zfdoc.com

129 ms

grytxtr5.jpg

55 ms

DSC_0056.JPG

459 ms

ZF-203.jpg

107 ms

ZF-202.jpg

107 ms

Our browser made a total of 6 requests to load all elements on the main page. We found that 83% of them (5 requests) were addressed to the original Zfdoc.com, 17% (1 request) were made to Img1.wsimg.com. The less responsive or slowest element that took the longest time to load (459 ms) belongs to the original domain Zfdoc.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 21.7 kB (2%)

Content Size

1.3 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Zfdoc.com main page is 1.3 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. Only 5% of websites need less resources to load. Images take 1.2 MB which makes up the majority of the site volume.

HTML Optimization

-60%

Potential reduce by 3.9 kB

  • Original 6.4 kB
  • After minification 6.3 kB
  • After compression 2.6 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. 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 3.9 kB or 60% of the original size.

Image Optimization

-1%

Potential reduce by 17.8 kB

  • Original 1.2 MB
  • After minification 1.2 MB

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. ZF Doc images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 7 B

  • Original 21.0 kB
  • After minification 21.0 kB
  • After compression 21.0 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.

Requests Breakdown

We found no issues to fix!

Requests Now

5

After Optimization

5

  • Images
  • JavaScript

The browser has sent 5 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ZF Doc. According to our analytics all requests are already optimized.

Network Requests Diagram

zfdoc.com

zfdoc.com

129 ms

grytxtr5.jpg

grytxtr5.jpg

55 ms

DSC_0056.JPG

DSC_0056.JPG

459 ms

ZF-203.jpg

ZF-203.jpg

107 ms

ZF-202.jpg

ZF-202.jpg

107 ms

scc-c2.min.js

scc-c2.min.js

14 ms

Accessibility Review

zfdoc.com accessibility score

57

Accessibility Issues

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

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

The document uses <meta http-equiv="refresh">

Best Practices

zfdoc.com best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

SEO Factors

zfdoc.com SEO score

62

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

    N/A

  • Encoding

    ISO-8859-1

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

zfdoc.com

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