Tools & Wizards About Us
dgemg.com screenshot

Report Summary

  • 33

    Performance

    Renders faster than
    53% of other websites

  • 90

    Accessibility

    Visual factors better than
    that of 74% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

dgemg.com

Homepage | German Gemmological Association - Deutsche Gemmologische Gesellschaft e.V.

Page Load Speed

4.2 sec in total

First Response

607 ms

Resources Loaded

3.3 sec

Page Rendered

243 ms

dgemg.com screenshot

About Website

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

Seit 1932 Europas führendes Weiterbildungs- und Forschungsinstitut für Edelsteine. Bildungsprogramme in Edelsteinkunde, Diamantengraduierung und Perlen/Organische Substanzen für die effektive Aus- und...

Visit dgemg.com

Key Findings

We analyzed Dgemg.com page load time and found that the first response time was 607 ms and then it took 3.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

dgemg.com performance score

33

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.6 s

0/100

10%

LCP (Largest Contentful Paint)

Value11.0 s

0/100

25%

SI (Speed Index)

Value10.3 s

8/100

10%

TBT (Total Blocking Time)

Value170 ms

92/100

30%

CLS (Cumulative Layout Shift)

Value0.51

15/100

15%

TTI (Time to Interactive)

Value10.4 s

24/100

10%

Network Requests Diagram

607 ms

jcemediabox.min.css

160 ms

slideshow.css

267 ms

template.css

312 ms

vm-ltr-common.css

303 ms

Our browser made a total of 52 requests to load all elements on the main page. We found that all of those requests were addressed to Dgemg.com and no external sources were called. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Dgemg.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.1 MB (63%)

Content Size

1.7 MB

After Optimization

638.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Dgemg.com main page is 1.7 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. Javascripts take 808.9 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 38.8 kB

  • Original 47.9 kB
  • After minification 34.2 kB
  • After compression 9.1 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 13.7 kB, which is 29% 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 38.8 kB or 81% of the original size.

Image Optimization

-1%

Potential reduce by 4.5 kB

  • Original 316.1 kB
  • After minification 311.6 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. Dgemg images are well optimized though.

JavaScript Optimization

-72%

Potential reduce by 582.1 kB

  • Original 808.9 kB
  • After minification 771.7 kB
  • After compression 226.8 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 582.1 kB or 72% of the original size.

CSS Optimization

-83%

Potential reduce by 460.8 kB

  • Original 551.8 kB
  • After minification 519.1 kB
  • After compression 91.1 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. Dgemg.com needs all CSS files to be minified and compressed as it can save up to 460.8 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 37 (74%)

Requests Now

50

After Optimization

13

  • Images
  • JavaScript
  • CSS

The browser has sent 50 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dgemg. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 24 to 1 for JavaScripts and from 15 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

607 ms

jcemediabox.min.css

jcemediabox.min.css

160 ms

slideshow.css

slideshow.css

267 ms

template.css

template.css

312 ms

vm-ltr-common.css

vm-ltr-common.css

303 ms

vm-ltr-site.css

vm-ltr-site.css

431 ms

uikit.min.css

uikit.min.css

643 ms

nucleus.css

nucleus.css

425 ms

oxygen_16.css

oxygen_16.css

634 ms

bootstrap-gantry.css

bootstrap-gantry.css

653 ms

joomla.css

joomla.css

416 ms

icomoon.css

icomoon.css

544 ms

font-awesome.min.css

font-awesome.min.css

596 ms

oxygen-joomla_16.css

oxygen-joomla_16.css

631 ms

custom_16.css

custom_16.css

666 ms

redimstyle.css

redimstyle.css

707 ms

jquery.min.js

jquery.min.js

893 ms

jquery-noconflict.js

jquery-noconflict.js

735 ms

jquery-migrate.min.js

jquery-migrate.min.js

753 ms

caption.js

caption.js

754 ms

jcemediabox.min.js

jcemediabox.min.js

892 ms

mootools-core.js

mootools-core.js

972 ms

core.js

core.js

844 ms

mootools-mobile.js

mootools-mobile.js

865 ms

rokmediaqueries.js

rokmediaqueries.js

858 ms

roksprocket.js

roksprocket.js

954 ms

moofx.js

moofx.js

1063 ms

features.js

features.js

985 ms

slideshow.js

slideshow.js

1006 ms

html5fallback.js

html5fallback.js

1000 ms

jquery-ui.min.js

jquery-ui.min.js

1216 ms

jquery.ui.autocomplete.html.js

jquery.ui.autocomplete.html.js

1077 ms

jquery.noconflict.js

jquery.noconflict.js

1088 ms

update_cart.js

update_cart.js

1103 ms

iframe-height.min.js

iframe-height.min.js

1107 ms

bootstrap.min.js

bootstrap.min.js

1182 ms

main.js

main.js

1249 ms

uikit.min.js

uikit.min.js

1127 ms

template.js

template.js

953 ms

scrollReveal.min.js

scrollReveal.min.js

915 ms

01-dgemg-slide.jpg

01-dgemg-slide.jpg

133 ms

03-dgemg-slide.jpg

03-dgemg-slide.jpg

165 ms

02-dgemg-slide.jpg

02-dgemg-slide.jpg

216 ms

de.gif

de.gif

132 ms

dgemg-seminare-logo.gif

dgemg-seminare-logo.gif

132 ms

deutsche-gemmologische-gesellschaft-teaser.gif

deutsche-gemmologische-gesellschaft-teaser.gif

166 ms

Home-Study-Gemmology-DGemG.jpg

Home-Study-Gemmology-DGemG.jpg

253 ms

Educational-Programme-DGemG.jpg

Educational-Programme-DGemG.jpg

243 ms

Seminaranmeldung.jpg

Seminaranmeldung.jpg

239 ms

start-logo-dgemg.jpg

start-logo-dgemg.jpg

280 ms

pfeil-listenzeichen.gif

pfeil-listenzeichen.gif

263 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

367 ms

Accessibility Review

dgemg.com accessibility score

90

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.

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

dgemg.com best practices score

58

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

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

dgemg.com SEO score

92

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 Dgemg.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 Dgemg.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

dgemg.com

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