Report Summary

  • 10

    Performance

    Renders faster than
    23% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 43% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 74

    SEO

    Google-friendlier than
    32% of websites

stellingvanamsterdam.nl

UNESCO werelderfgoed | Hollandse Waterlinies

Page Load Speed

4.7 sec in total

First Response

319 ms

Resources Loaded

4 sec

Page Rendered

329 ms

stellingvanamsterdam.nl screenshot

About Website

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

UNESCO werelderfgoed Hollandse Waterlinies bestaat uit de Stelling van Amsterdam en de Nieuwe Hollandse Waterlinie. Samen vertellen zij het verhaal van de militaire verdediging van ons land met water ...

Visit stellingvanamsterdam.nl

Key Findings

We analyzed Stellingvanamsterdam.nl page load time and found that the first response time was 319 ms and then it took 4.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

stellingvanamsterdam.nl performance score

10

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.6 s

14/100

10%

LCP (Largest Contentful Paint)

Value12.4 s

0/100

25%

SI (Speed Index)

Value9.3 s

13/100

10%

TBT (Total Blocking Time)

Value1,470 ms

14/100

30%

CLS (Cumulative Layout Shift)

Value0.701

7/100

15%

TTI (Time to Interactive)

Value11.9 s

17/100

10%

Network Requests Diagram

stellingvanamsterdam.nl

319 ms

www.stellingvanamsterdam.nl

1316 ms

foundation.css

389 ms

font-awesome.css

17 ms

shadowbox.css

209 ms

Our browser made a total of 116 requests to load all elements on the main page. We found that 97% of them (112 requests) were addressed to the original Stellingvanamsterdam.nl, 2% (2 requests) were made to Netdna.bootstrapcdn.com and 2% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Stellingvanamsterdam.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 931.4 kB (27%)

Content Size

3.4 MB

After Optimization

2.5 MB

In fact, the total size of Stellingvanamsterdam.nl main page is 3.4 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 2.4 MB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 127.4 kB

  • Original 142.6 kB
  • After minification 110.1 kB
  • After compression 15.2 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 32.5 kB, which is 23% 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 127.4 kB or 89% of the original size.

Image Optimization

-2%

Potential reduce by 54.5 kB

  • Original 2.4 MB
  • After minification 2.3 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. Stellingvanamsterdam images are well optimized though.

JavaScript Optimization

-78%

Potential reduce by 480.7 kB

  • Original 619.5 kB
  • After minification 455.6 kB
  • After compression 138.8 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 480.7 kB or 78% of the original size.

CSS Optimization

-85%

Potential reduce by 268.8 kB

  • Original 315.4 kB
  • After minification 253.8 kB
  • After compression 46.6 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. Stellingvanamsterdam.nl needs all CSS files to be minified and compressed as it can save up to 268.8 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 47 (42%)

Requests Now

113

After Optimization

66

The browser has sent 113 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Stellingvanamsterdam. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 26 to 1 for JavaScripts and from 14 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

stellingvanamsterdam.nl accessibility score

76

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

Image elements do not have [alt] attributes

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

stellingvanamsterdam.nl best practices score

92

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

SEO Factors

stellingvanamsterdam.nl SEO score

74

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

Links do not have descriptive text

High

Image elements do not have [alt] attributes

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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

    NL

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Stellingvanamsterdam.nl can be misinterpreted by Google and other search engines. Our service has detected that Dutch is used on the page, and it does not match the claimed English language. Our system also found out that Stellingvanamsterdam.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 description is not detected on the main page of Stellingvanamsterdam. 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: