3.1 sec in total
1 sec
1.7 sec
331 ms
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Visit zdi.comWe analyzed Zdi.com page load time and found that the first response time was 1 sec and then it took 2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster. This domain responded with an error, which can significantly jeopardize Zdi.com rating and web reputation
zdi.com performance score
name
value
score
weighting
Value4.6 s
13/100
10%
Value6.9 s
6/100
25%
Value6.5 s
39/100
10%
Value100 ms
98/100
30%
Value0
100/100
15%
Value6.8 s
55/100
10%
1049 ms
174 ms
333 ms
71 ms
78 ms
Our browser made a total of 52 requests to load all elements on the main page. We found that 87% of them (45 requests) were addressed to the original Zdi.com, 12% (6 requests) were made to Zdic.com and 2% (1 request) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1 sec) belongs to the original domain Zdi.com.
Page size can be reduced by 1.2 MB (66%)
1.9 MB
645.0 kB
In fact, the total size of Zdi.com main page is 1.9 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. 30% of websites need less resources to load. Javascripts take 1.3 MB which makes up the majority of the site volume.
Potential reduce by 86.0 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. 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 86.0 kB or 80% of the original size.
Potential reduce by 124.3 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, ZD I needs image optimization as it can save up to 124.3 kB or 28% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 973.7 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 973.7 kB or 77% of the original size.
Potential reduce by 54.0 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. Zdi.com needs all CSS files to be minified and compressed as it can save up to 54.0 kB or 80% of the original size.
Number of requests can be reduced by 11 (23%)
48
37
The browser has sent 48 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ZD I. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.
zdi.com
1049 ms
Structure.css
174 ms
jquery-1.4.2.js
333 ms
jquery.li-scroller.1.0.js
71 ms
li-scroller.css
78 ms
WebResource.axd
141 ms
WebResource.axd
139 ms
WebResource.axd
114 ms
WebResource.axd
149 ms
WebResource.axd
174 ms
WebResource.axd
175 ms
WebResource.axd
128 ms
Telerik.Web.UI.WebResource.axd
440 ms
ga.js
6 ms
IconChipInHand.jpg
173 ms
IconSourcing.jpg
186 ms
IconStrategicSupply.jpg
269 ms
IconCleanRoom.jpg
269 ms
IconOnPhone.jpg
185 ms
IconDryAir.jpg
270 ms
Logo.jpg
63 ms
HomeHeader.jpg
70 ms
WeBuyExcess.jpg
65 ms
A-Torch%20Mould.jpg
72 ms
AdvancedLabelworx.jpg
70 ms
AllianceMemory.jpg
120 ms
bfg_logo-short(edit).png
147 ms
Epitex2.jpg
113 ms
196.jpg
123 ms
JB%20Capacitors.jpg
123 ms
Tempco2.jpg
153 ms
Timbar.jpg
158 ms
TopDiode_Logo.jpg
164 ms
UF_Capacitors.png
161 ms
PhoenixCable_Logo.png
266 ms
kingtronics_logo.jpg
267 ms
HI_logo_web2.jpg
268 ms
YangJie.gif
269 ms
HighLowCorp.jpg
269 ms
winstar-logo.png
270 ms
EQPStampSmall.jpg
269 ms
ISO9001.png
271 ms
CageCode1V8K2.jpg
272 ms
ERAI.gif
271 ms
ESDCertified.gif
272 ms
GIDEP.jpg
306 ms
MenuItemBackground.gif
163 ms
WebResource.axd
159 ms
MenuItembackground.gif
156 ms
WeBuyExcess.jpg
157 ms
WebResource.axd
160 ms
WebResource.axd
160 ms
zdi.com accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
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
<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
Form elements do not have associated labels
zdi.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Missing source maps for large first-party JavaScript
zdi.com SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zdi.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 Zdi.com 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.
zdi.com
Open Graph description is not detected on the main page of ZD I. 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: