Report Summary

  • 30

    Performance

    Renders faster than
    50% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

citysightseeingamsterdam.nl

Unique Amsterdam Sightseeing experience | City Sightseeing Amsterdam

Page Load Speed

9.4 sec in total

First Response

374 ms

Resources Loaded

8 sec

Page Rendered

1.1 sec

citysightseeingamsterdam.nl screenshot

About Website

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

Hop on our Amsterdam bus tour and switch over to our Amsterdam boat tour for a complete sightseeing tour experience!

Visit citysightseeingamsterdam.nl

Key Findings

We analyzed Citysightseeingamsterdam.nl page load time and found that the first response time was 374 ms and then it took 9.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

citysightseeingamsterdam.nl performance score

30

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

18/100

10%

LCP (Largest Contentful Paint)

Value4.4 s

38/100

25%

SI (Speed Index)

Value13.8 s

1/100

10%

TBT (Total Blocking Time)

Value1,580 ms

12/100

30%

CLS (Cumulative Layout Shift)

Value0.003

100/100

15%

TTI (Time to Interactive)

Value24.2 s

0/100

10%

Network Requests Diagram

citysightseeingamsterdam.nl

374 ms

citysightseeingamsterdam.nl

377 ms

www.citysightseeingamsterdam.nl

856 ms

polyfills-legacy-CqBqymH0.js

504 ms

sentry-xP6Um75D.js

458 ms

Our browser made a total of 66 requests to load all elements on the main page. We found that 5% of them (3 requests) were addressed to the original Citysightseeingamsterdam.nl, 77% (51 requests) were made to Assets.berlin-city-tour.de and 17% (11 requests) were made to Berlin-city-tour.de. The less responsive or slowest element that took the longest time to load (5.6 sec) relates to the external source Assets.berlin-city-tour.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 437.6 kB (16%)

Content Size

2.8 MB

After Optimization

2.3 MB

In fact, the total size of Citysightseeingamsterdam.nl main page is 2.8 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. 50% of websites need less resources to load. Images take 2.3 MB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 408.0 kB

  • Original 461.9 kB
  • After minification 409.4 kB
  • After compression 53.9 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 52.5 kB, which is 11% 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 408.0 kB or 88% of the original size.

Image Optimization

-0%

Potential reduce by 1.4 kB

  • Original 2.3 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. City Sightseeing Amsterdam images are well optimized though.

CSS Optimization

-98%

Potential reduce by 28.2 kB

  • Original 28.9 kB
  • After minification 723 B
  • After compression 707 B

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. Citysightseeingamsterdam.nl needs all CSS files to be minified and compressed as it can save up to 28.2 kB or 98% of the original size.

Requests Breakdown

Number of requests can be reduced by 5 (8%)

Requests Now

59

After Optimization

54

The browser has sent 59 CSS, Javascripts, AJAX and image requests in order to completely render the main page of City Sightseeing Amsterdam. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

citysightseeingamsterdam.nl accessibility score

83

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

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

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

citysightseeingamsterdam.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

High

Missing source maps for large first-party JavaScript

SEO Factors

citysightseeingamsterdam.nl SEO score

93

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

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 Citysightseeingamsterdam.nl 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 Citysightseeingamsterdam.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 City Sightseeing Amsterdam. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: