Tools & Wizards About Us

Report Summary

  • 25

    Performance

    Renders faster than
    44% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 68% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

upstairs.nl

Traprenovatie Upstairs Nederland | Perfectie in elke trede

Page Load Speed

3 sec in total

First Response

251 ms

Resources Loaded

1.5 sec

Page Rendered

1.2 sec

About Website

Visit upstairs.nl now to see the best up-to-date Upstairs content and also check out these interesting facts you probably never knew about upstairs.nl

Wij denken graag met je mee over de traprenovatie van jouw trap, zodat die perfect aansluit bij jouw interieur. Neem contact met ons op.

Visit upstairs.nl

Key Findings

We analyzed Upstairs.nl page load time and found that the first response time was 251 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

upstairs.nl performance score

25

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

18/100

10%

LCP (Largest Contentful Paint)

Value4.5 s

36/100

25%

SI (Speed Index)

Value8.7 s

16/100

10%

TBT (Total Blocking Time)

Value3,570 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.124

83/100

15%

TTI (Time to Interactive)

Value21.7 s

1/100

10%

Network Requests Diagram

upstairs.nl

251 ms

264 ms

gtm.js

72 ms

calendar.css

41 ms

schedule.css

58 ms

Our browser made a total of 89 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Upstairs.nl, 74% (66 requests) were made to Upstairs.com and 6% (5 requests) were made to Youtube.com. The less responsive or slowest element that took the longest time to load (546 ms) relates to the external source Upstairs.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 317.4 kB (16%)

Content Size

1.9 MB

After Optimization

1.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Upstairs.nl 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. Only a small number of websites need less resources to load. Images take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 196.3 kB

  • Original 233.5 kB
  • After minification 199.5 kB
  • After compression 37.2 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 33.9 kB, which is 15% 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 196.3 kB or 84% of the original size.

Image Optimization

-0%

Potential reduce by 2.1 kB

  • Original 1.3 MB
  • After minification 1.3 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. Upstairs images are well optimized though.

JavaScript Optimization

-37%

Potential reduce by 118.9 kB

  • Original 320.0 kB
  • After minification 319.8 kB
  • After compression 201.1 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 118.9 kB or 37% of the original size.

CSS Optimization

-0%

Potential reduce by 83 B

  • Original 111.0 kB
  • After minification 111.0 kB
  • After compression 110.9 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. Upstairs.nl has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 56 (67%)

Requests Now

83

After Optimization

27

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 83 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Upstairs. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 30 to 1 for JavaScripts and from 21 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

upstairs.nl accessibility score

88

Accessibility Issues

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

Buttons do not have an accessible name

High

Links do not have a discernible name

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.

Best Practices

upstairs.nl 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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

upstairs.nl SEO score

100

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

Language and Encoding

  • Language Detected

    NL

  • Language Claimed

    NL

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Upstairs.nl can be misinterpreted by Google and other search engines. Our service has detected that Dutch is used on the page, and it matches the claimed language. Our system also found out that Upstairs.nl 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 data is detected on the main page of Upstairs. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: