Access janszamsterdam.com. Jansz. | Modern Dutch Restaurant in Amsterdam

Report Summary

About Website

Welcome to janszamsterdam.com homepage info - get ready to check Jansz Amsterdam best content right away, or after learning these important things about janszamsterdam.com

Located within Pulitzer Amsterdam, Jansz is a modern Dutch all-day dining restaurant serving lunch & dinner in the heart of the Nine-Streets of the city. Book a table.

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name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

57/100

10%

LCP (Largest Contentful Paint)

Value12.0 s

0/100

25%

SI (Speed Index)

Value6.6 s

37/100

10%

TBT (Total Blocking Time)

Value2,070 ms

7/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value12.5 s

14/100

10%

janszamsterdam.com

169 ms

janszamsterdam.com

356 ms

uc.js

20 ms

jansz.css

169 ms

revinate-form.js

313 ms

Our browser made a total of 43 requests to load all elements on the main page. We found that 81% of them (35 requests) were addressed to the original Janszamsterdam.com, 9% (4 requests) were made to Cdn.curator.io and 5% (2 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (2.1 sec) belongs to the original domain Janszamsterdam.com.

Content Size

5.2 MB

After Optimization

4.9 MB

In fact, the total size of Janszamsterdam.com main page is 5.2 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. 60% of websites need less resources to load. Images take 4.9 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 33.9 kB

Original 40.9 kB
After minification 32.4 kB
After compression 7.0 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. This page needs HTML code to be minified as it can gain 8.5 kB, which is 21% 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 33.9 kB or 83% of the original size.

Image Optimization

-4%

Potential reduce by 184.5 kB

Original 4.9 MB
After minification 4.7 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. Jansz Amsterdam images are well optimized though.

JavaScript Optimization

-25%

Potential reduce by 67.5 kB

Original 269.4 kB
After minification 269.4 kB
After compression 201.9 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 67.5 kB or 25% of the original size.

CSS Optimization

-30%

Potential reduce by 10.6 kB

Original 35.1 kB
After minification 35.0 kB
After compression 24.5 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. Janszamsterdam.com needs all CSS files to be minified and compressed as it can save up to 10.6 kB or 30% of the original size.

Requests Now

After Optimization

The browser has sent 39 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jansz 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 7 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Issues

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

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

High

Links do not have a discernible name

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

High

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

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

Search Engine Optimization Advices

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 Janszamsterdam.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 Janszamsterdam.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

janszamsterdam.com

Open Graph data is detected on the main page of Jansz Amsterdam. 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

Jansz. | Modern Dutch Restaurant in Amsterdam

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

janszamsterdam.com

janszamsterdam.com

uc.js

jansz.css

revinate-form.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

janszamsterdam.com

janszamsterdam.com

uc.js

jansz.css

revinate-form.js

jansz.js

gtm.js

gtm.js

cd5cda5f-67c3-4b30-8115-ad1f77992e90.js

close-blue-circled.svg

jansz-web-003b5c.png

jansz-logo-blue.svg

jansz-amsterdam-restaurant.jpg

jansz-terras-summer-2024-ashkan-mortezapour-photography-18-of-22.jpg

jansz-6.jpg

jansz-5.jpg

jansz-3.jpg

jansz-7.jpg

jansz-terras-summer-2024-ashkan-mortezapour-photography-13-of-22.jpg

jansz-terras-summer-2024-ashkan-mortezapour-photography-3-of-22.jpg

jansz-terras-summer-2024-ashkan-mortezapour-photography-21-of-22.jpg

jansz-spring-2024-ashkan-mortezapour-photography-5-of-40.jpg

jansz-terras-summer-2024-ashkan-mortezapour-photography-7-of-22.jpg

allison-lobalbo_l1100457.jpg

left-hand-web.png

pulitzer-rose-garden-summer-2024-ashkan-mortezapour-photography-18-of-31.jpg

glass-rose-web.png

0x9a8214.jpg

right-hand-web.png

instagram-logo-blue.svg

facebook-white.svg

instagram-white.svg

tripadvisor-logo-white.svg

Generika-Mono-Light.otf

Generika-Mono-Bold.otf

curator.embed.css

cd5cda5f-67c3-4b30-8115-ad1f77992e90.css

curator.embed.js

facebook-white.svg

instagram-white.svg

tripadvisor-logo-white.svg

arrow-left-circled.svg

arrow-right-circled.svg