Access kolbewindows.com. Kolbe Windows & Doors | Windows and doors for luxury homes and commercial buildings; custom orders w...

name

value

score

weighting

FCP (First Contentful Paint)

Value5.3 s

7/100

10%

LCP (Largest Contentful Paint)

Value23.5 s

0/100

25%

SI (Speed Index)

Value7.0 s

32/100

10%

TBT (Total Blocking Time)

Value980 ms

28/100

30%

CLS (Cumulative Layout Shift)

Value0.008

100/100

15%

TTI (Time to Interactive)

Value16.6 s

5/100

10%

kolbewindows.com

59 ms

loader.js

73 ms

style.min.css

40 ms

GetResource.ashx

89 ms

jquery-2.1.1.min.js

66 ms

Our browser made a total of 58 requests to load all elements on the main page. We found that 74% of them (43 requests) were addressed to the original Kolbewindows.com, 10% (6 requests) were made to Assets-us-01.kc-usercontent.com and 3% (2 requests) were made to App.usercentrics.eu. The less responsive or slowest element that took the longest time to load (275 ms) relates to the external source Use.fontawesome.com.

Content Size

6.5 MB

After Optimization

6.4 MB

In fact, the total size of Kolbewindows.com main page is 6.5 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. 70% of websites need less resources to load. Images take 6.0 MB which makes up the majority of the site volume.

HTML Optimization

-70%

Potential reduce by 29.1 kB

Original 41.4 kB
After minification 38.5 kB
After compression 12.3 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 29.1 kB or 70% of the original size.

Image Optimization

-1%

Potential reduce by 40.2 kB

Original 6.0 MB
After minification 6.0 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. Kolbe Windows images are well optimized though.

JavaScript Optimization

-9%

Potential reduce by 31.8 kB

Original 368.6 kB
After minification 368.6 kB
After compression 336.8 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. This website has mostly compressed JavaScripts.

CSS Optimization

-29%

Potential reduce by 19.0 kB

Original 64.5 kB
After minification 64.5 kB
After compression 45.5 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. Kolbewindows.com needs all CSS files to be minified and compressed as it can save up to 19.0 kB or 29% of the original size.

Requests Now

After Optimization

The browser has sent 56 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Kolbe Windows. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 25 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

These are opportunities to improve the interpretation of your content by users in different locales.

High

<html> element does not have a [lang] attribute

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.

High

Links do not have a discernible name

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Low

Detected JavaScript libraries

Search Engine Optimization Advices

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Links do not have descriptive text

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

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/).

High

Document uses legible font sizes

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 Kolbewindows.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 Kolbewindows.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

kolbewindows.com

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

Report Summary

Performance

Accessibility

Best Practices

SEO

Kolbe Windows & Doors | Windows and doors for luxury homes and commercial buildings; custom orders welcome.

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

kolbewindows.com

loader.js

style.min.css

GetResource.ashx

jquery-2.1.1.min.js

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

kolbewindows.com

loader.js

style.min.css

GetResource.ashx

jquery-2.1.1.min.js

GetResource.ashx

WebResource.axd

GetResource.ashx

ScriptResource.axd

ScriptResource.axd

ScriptResource.axd

ScriptResource.axd

ScriptResource.axd

ScriptResource.axd

ScriptResource.axd

GetResource.ashx

90e86ae3f4.js

sdk.js

master.min.js

bootstrap.min.js

GetResource.ashx

jquery-hotspotter.min.js

masonry.min.js

imagesloaded.min.js

GetResource.ashx

element.js

font-awesome.min.css

bundle.js

textured_background.jpg

AC601-wildlife-1920x800.png

iframe_api

AO201-Camera-House-1920x800%20%282%29.png

ad320-energywindows-1920x800.png

2016_07KolbeWausauOffice-ExtEast-002-%287%29_1.webp

Kolbe_CLiC_Exterior_700x400_Obscure.jpg

AC601-wildlife-700x400.png

BrandLogo_CMYK_Outlines_Gray.png

BrandLogo_CMYK_Outlines_Gray.png

Virtual-Showroom.jpg

whats-new-media-mention-card-MariposaGardenHouse.jpg

HomePage-ProTools-PV_drawings_2_rgb-450x389.jpg

cad.jpg

HomePage-ProductLines-AF802-450x389.jpg