Tools & Wizards About Us

Report Summary

  • 80

    Performance

    Renders faster than
    86% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 88% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 99

    SEO

    Google-friendlier than
    93% of websites

colorglass.de

Farbglashütte Reichenbach GmbH verlay colours casting glass Lampworking worldwide

Page Load Speed

7.2 sec in total

First Response

1.3 sec

Resources Loaded

5.8 sec

Page Rendered

181 ms

About Website

Click here to check amazing Color Glass content. Otherwise, check out these important facts you probably never knew about colorglass.de

Farbglashütte Reichenbach GmbH/ Oberlausitz – your worldwide partner for Overlay colors, casting glasses, Lampworking & colored glass for architecture.

Visit colorglass.de

Key Findings

We analyzed Colorglass.de page load time and found that the first response time was 1.3 sec and then it took 6 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

colorglass.de performance score

80

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.2 s

79/100

10%

LCP (Largest Contentful Paint)

Value3.3 s

69/100

25%

SI (Speed Index)

Value5.8 s

49/100

10%

TBT (Total Blocking Time)

Value190 ms

90/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value4.9 s

78/100

10%

Network Requests Diagram

colorglass.de

1260 ms

index-en.php

453 ms

styles.css

366 ms

milkbox.css

370 ms

mailmask.js

372 ms

Our browser made a total of 35 requests to load all elements on the main page. We found that 3% of them (1 request) were addressed to the original Colorglass.de, 86% (30 requests) were made to Farbglas.de and 6% (2 requests) were made to Cms.euroweb.de. The less responsive or slowest element that took the longest time to load (1.3 sec) relates to the external source Cms.euroweb.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 136.8 kB (29%)

Content Size

471.1 kB

After Optimization

334.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Colorglass.de main page is 471.1 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. Only 10% of websites need less resources to load. Images take 298.7 kB which makes up the majority of the site volume.

HTML Optimization

-69%

Potential reduce by 6.6 kB

  • Original 9.6 kB
  • After minification 8.9 kB
  • After compression 3.0 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 6.6 kB or 69% of the original size.

Image Optimization

-3%

Potential reduce by 10.3 kB

  • Original 298.7 kB
  • After minification 288.4 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. Color Glass images are well optimized though.

JavaScript Optimization

-72%

Potential reduce by 97.6 kB

  • Original 135.2 kB
  • After minification 115.9 kB
  • After compression 37.5 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 97.6 kB or 72% of the original size.

CSS Optimization

-81%

Potential reduce by 22.2 kB

  • Original 27.6 kB
  • After minification 21.5 kB
  • After compression 5.3 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. Colorglass.de needs all CSS files to be minified and compressed as it can save up to 22.2 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 14 (44%)

Requests Now

32

After Optimization

18

  • Images
  • JavaScript
  • CSS

The browser has sent 32 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Color Glass. 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 from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

colorglass.de accessibility score

96

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

<frame> or <iframe> elements do not have a title

Best Practices

colorglass.de best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

colorglass.de SEO score

99

Search Engine Optimization Advices

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Colorglass.de 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 Colorglass.de 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 Color Glass. 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: