Tools & Wizards About Us
du-co.com screenshot

Report Summary

  • 25

    Performance

    Renders faster than
    44% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

du-co.com

Ceramic Parts and Ceramic Products - Du-Co Ceramics Company

Page Load Speed

2.9 sec in total

First Response

89 ms

Resources Loaded

2.5 sec

Page Rendered

295 ms

du-co.com screenshot

About Website

Visit du-co.com now to see the best up-to-date Du Co content and also check out these interesting facts you probably never knew about du-co.com

Ceramic parts in Steatite, Cordierite, Porcelain, Magnesium Oxide, Alumina, Mullite and Forsterite Du-Co produces high quality ceramic parts

Visit du-co.com

Key Findings

We analyzed Du-co.com page load time and found that the first response time was 89 ms and then it took 2.8 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

du-co.com performance score

25

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.7 s

2/100

10%

LCP (Largest Contentful Paint)

Value17.2 s

0/100

25%

SI (Speed Index)

Value15.4 s

0/100

10%

TBT (Total Blocking Time)

Value630 ms

47/100

30%

CLS (Cumulative Layout Shift)

Value0.159

73/100

15%

TTI (Time to Interactive)

Value29.6 s

0/100

10%

Network Requests Diagram

du-co.com

89 ms

du-co.com

1468 ms

style.min.css

159 ms

styles.css

150 ms

cookie-bar.css

132 ms

Our browser made a total of 96 requests to load all elements on the main page. We found that 82% of them (79 requests) were addressed to the original Du-co.com, 11% (11 requests) were made to Fonts.gstatic.com and 3% (3 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Du-co.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.3 MB (22%)

Content Size

5.9 MB

After Optimization

4.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Du-co.com main page is 5.9 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. 65% of websites need less resources to load. Images take 4.6 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 90.2 kB

  • Original 112.7 kB
  • After minification 110.9 kB
  • After compression 22.5 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 90.2 kB or 80% of the original size.

Image Optimization

-5%

Potential reduce by 240.5 kB

  • Original 4.6 MB
  • After minification 4.3 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. Du Co images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 358.0 kB

  • Original 509.7 kB
  • After minification 505.3 kB
  • After compression 151.7 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 358.0 kB or 70% of the original size.

CSS Optimization

-82%

Potential reduce by 610.7 kB

  • Original 747.3 kB
  • After minification 726.5 kB
  • After compression 136.6 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. Du-co.com needs all CSS files to be minified and compressed as it can save up to 610.7 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 42 (51%)

Requests Now

82

After Optimization

40

  • Images
  • JavaScript
  • CSS

The browser has sent 82 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Du Co. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 23 to 1 for JavaScripts and from 21 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

du-co.com

du-co.com

89 ms

du-co.com

du-co.com

1468 ms

style.min.css

style.min.css

159 ms

styles.css

styles.css

150 ms

cookie-bar.css

cookie-bar.css

132 ms

menu-image.css

menu-image.css

149 ms

dashicons.min.css

dashicons.min.css

223 ms

simple-banner.css

simple-banner.css

154 ms

style.css

style.css

238 ms

font-awesome.min.css

font-awesome.min.css

219 ms

mobilenav.css

mobilenav.css

185 ms

elementor-icons.min.css

elementor-icons.min.css

209 ms

frontend.min.css

frontend.min.css

280 ms

swiper.min.css

swiper.min.css

236 ms

post-3322.css

post-3322.css

262 ms

all.min.css

all.min.css

295 ms

v4-shims.min.css

v4-shims.min.css

277 ms

post-91.css

post-91.css

295 ms

css

css

37 ms

smartslider.min.css

smartslider.min.css

292 ms

css

css

55 ms

jquery.min.js

jquery.min.js

384 ms

jquery-migrate.min.js

jquery-migrate.min.js

339 ms

redirect_method.js

redirect_method.js

330 ms

cookie-bar.js

cookie-bar.js

340 ms

simple-banner.js

simple-banner.js

345 ms

mobilenav.min.js

mobilenav.min.js

340 ms

v4-shims.min.js

v4-shims.min.js

381 ms

js

js

68 ms

urchin.js

urchin.js

22 ms

sortable.js

sortable.js

429 ms

n2.min.js

n2.min.js

427 ms

smartslider-frontend.min.js

smartslider-frontend.min.js

440 ms

ss-simple.min.js

ss-simple.min.js

436 ms

w-arrow-image.min.js

w-arrow-image.min.js

437 ms

animations.min.css

animations.min.css

412 ms

jquery.flexslider.min.js

jquery.flexslider.min.js

412 ms

jquery.touchSwipe.min.js

jquery.touchSwipe.min.js

414 ms

jquery.theme-main.min.js

jquery.theme-main.min.js

412 ms

jquery.fitvids.min.js

jquery.fitvids.min.js

530 ms

webpack.runtime.min.js

webpack.runtime.min.js

530 ms

frontend-modules.min.js

frontend-modules.min.js

534 ms

waypoints.min.js

waypoints.min.js

432 ms

core.min.js

core.min.js

417 ms

frontend.min.js

frontend.min.js

417 ms

__utm.gif

__utm.gif

38 ms

css

css

20 ms

LinkedIn_logo_initials.png

LinkedIn_logo_initials.png

196 ms

headerlt2.jpg

headerlt2.jpg

159 ms

Du-Co-CeramicsDark.png

Du-Co-CeramicsDark.png

78 ms

3seals2024.png

3seals2024.png

79 ms

logosm_grnsm-36x25-1.png

logosm_grnsm-36x25-1.png

79 ms

ballsocket.jpg

ballsocket.jpg

82 ms

ceramicpost1.jpg

ceramicpost1.jpg

123 ms

standband.jpg

standband.jpg

145 ms

resistcore.jpg

resistcore.jpg

145 ms

cupbushings.jpg

cupbushings.jpg

144 ms

standgroove.jpg

standgroove.jpg

144 ms

ribbedbushing.jpg

ribbedbushing.jpg

157 ms

shoulderbushings.jpg

shoulderbushings.jpg

195 ms

image003.png

image003.png

240 ms

ceramicwashers.jpg

ceramicwashers.jpg

197 ms

thermooval_low-400x266.jpg

thermooval_low-400x266.jpg

202 ms

thermoround.jpg

thermoround.jpg

204 ms

ferruleicon.jpg

ferruleicon.jpg

188 ms

image008.png

image008.png

239 ms

image003.jpg

image003.jpg

250 ms

unnamed.png

unnamed.png

255 ms

image007.png

image007.png

256 ms

tecrep3.jpg

tecrep3.jpg

254 ms

newslide1.jpg

newslide1.jpg

312 ms

newslide2.jpg

newslide2.jpg

371 ms

newslide3.jpg

newslide3.jpg

368 ms

newslide4.jpg

newslide4.jpg

321 ms

boxcapa.jpg

boxcapa.jpg

313 ms

boxstan-1.jpg

boxstan-1.jpg

303 ms

boxquote.jpg

boxquote.jpg

354 ms

image002-150x150.jpg

image002-150x150.jpg

353 ms

75-150x150.png

75-150x150.png

287 ms

Davey-Headshot2-150x150.jpg

Davey-Headshot2-150x150.jpg

285 ms

lori4-150x150.jpg

lori4-150x150.jpg

318 ms

slide1.jpg

slide1.jpg

419 ms

308667993.png

308667993.png

327 ms

official-facebook-logo-icon-28-copy-1.png

official-facebook-logo-icon-28-copy-1.png

338 ms

S6uyw4BMUTPHjx4wWA.woff

S6uyw4BMUTPHjx4wWA.woff

43 ms

S6u9w4BMUTPHh7USSwiPHw.woff

S6u9w4BMUTPHh7USSwiPHw.woff

44 ms

S6u8w4BMUTPHh30AXC-s.woff

S6u8w4BMUTPHh30AXC-s.woff

65 ms

S6u9w4BMUTPHh6UVSwiPHw.woff

S6u9w4BMUTPHh6UVSwiPHw.woff

79 ms

S6u9w4BMUTPHh50XSwiPHw.woff

S6u9w4BMUTPHh50XSwiPHw.woff

81 ms

vantage-icons.woff

vantage-icons.woff

339 ms

KFOmCnqEu92Fr1Mu4mxM.woff

KFOmCnqEu92Fr1Mu4mxM.woff

79 ms

KFOlCnqEu92Fr1MmEU9fBBc-.woff

KFOlCnqEu92Fr1MmEU9fBBc-.woff

79 ms

KFOlCnqEu92Fr1MmSU5fBBc-.woff

KFOlCnqEu92Fr1MmSU5fBBc-.woff

80 ms

KFOkCnqEu92Fr1MmgVxIIzQ.woff

KFOkCnqEu92Fr1MmgVxIIzQ.woff

80 ms

KFOlCnqEu92Fr1MmWUlfBBc-.woff

KFOlCnqEu92Fr1MmWUlfBBc-.woff

79 ms

KFOlCnqEu92Fr1MmYUtfBBc-.woff

KFOlCnqEu92Fr1MmYUtfBBc-.woff

81 ms

Accessibility Review

du-co.com accessibility score

83

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

du-co.com best practices score

83

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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

du-co.com SEO score

93

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

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 Du-co.com 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 Du-co.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.

Social Sharing Optimization

du-co.com

Open Graph data is detected on the main page of Du Co. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: