Tools & Wizards About Us
operakallaren.se screenshot

Report Summary

  • 52

    Performance

    Renders faster than
    69% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 51% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

operakallaren.se

Operakällaren • Culinary Sensations since 1787 • Stockholm

Page Load Speed

4.1 sec in total

First Response

907 ms

Resources Loaded

2.9 sec

Page Rendered

266 ms

operakallaren.se screenshot

About Website

Visit operakallaren.se now to see the best up-to-date Operakallaren content for Sweden and also check out these interesting facts you probably never knew about operakallaren.se

Operakällaren blends historic elegance with modern gastronomy at Stockholm’s iconic fine dining venue. A place where tradition meets innovation, offering an exceptional culinary experience in a timele...

Visit operakallaren.se

Key Findings

We analyzed Operakallaren.se page load time and found that the first response time was 907 ms and then it took 3.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

operakallaren.se performance score

52

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.2 s

79/100

10%

LCP (Largest Contentful Paint)

Value2.3 s

93/100

25%

SI (Speed Index)

Value6.4 s

40/100

10%

TBT (Total Blocking Time)

Value2,440 ms

5/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value22.5 s

1/100

10%

Network Requests Diagram

operakallaren.se

907 ms

style.css

306 ms

jquery.ui.all.css

158 ms

main.css

270 ms

jquery.min.js

85 ms

Our browser made a total of 53 requests to load all elements on the main page. We found that 87% of them (46 requests) were addressed to the original Operakallaren.se, 4% (2 requests) were made to Cloud.2book.se and 4% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.7 sec) belongs to the original domain Operakallaren.se.

Page Optimization Overview & Recommendations

Page size can be reduced by 170.8 kB (29%)

Content Size

589.7 kB

After Optimization

419.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Operakallaren.se main page is 589.7 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 30% of websites need less resources to load. Images take 396.2 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 18.4 kB

  • Original 23.8 kB
  • After minification 18.8 kB
  • After compression 5.3 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. This page needs HTML code to be minified as it can gain 5.0 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 18.4 kB or 78% of the original size.

Image Optimization

-10%

Potential reduce by 39.0 kB

  • Original 396.2 kB
  • After minification 357.2 kB

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. Operakallaren images are well optimized though.

JavaScript Optimization

-49%

Potential reduce by 39.9 kB

  • Original 81.8 kB
  • After minification 81.4 kB
  • After compression 41.9 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 39.9 kB or 49% of the original size.

CSS Optimization

-83%

Potential reduce by 73.4 kB

  • Original 87.9 kB
  • After minification 67.2 kB
  • After compression 14.5 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. Operakallaren.se needs all CSS files to be minified and compressed as it can save up to 73.4 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (29%)

Requests Now

52

After Optimization

37

  • Images
  • JavaScript
  • CSS

The browser has sent 52 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Operakallaren. 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 from 10 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

operakallaren.se

operakallaren.se

907 ms

style.css

style.css

306 ms

jquery.ui.all.css

jquery.ui.all.css

158 ms

main.css

main.css

270 ms

jquery.min.js

jquery.min.js

85 ms

jquery.fancybox.css

jquery.fancybox.css

158 ms

jquery.fancybox.pack.js

jquery.fancybox.pack.js

238 ms

jquery.bxSlider.min.js

jquery.bxSlider.min.js

236 ms

core.js

core.js

160 ms

jquery.ui.base.css

jquery.ui.base.css

81 ms

jquery.ui.theme.css

jquery.ui.theme.css

156 ms

jquery.ui.core.css

jquery.ui.core.css

81 ms

jquery.ui.resizable.css

jquery.ui.resizable.css

81 ms

jquery.ui.selectable.css

jquery.ui.selectable.css

79 ms

jquery.ui.datepicker.css

jquery.ui.datepicker.css

82 ms

analytics.js

analytics.js

48 ms

fbevents.js

fbevents.js

77 ms

stefano.png

stefano.png

346 ms

logo_nobis_hotel.png

logo_nobis_hotel.png

263 ms

logo_hotel_j.png

logo_hotel_j.png

905 ms

logo_hotel_skeppsholmen.png

logo_hotel_skeppsholmen.png

708 ms

stallmastaregarden_logo.png

stallmastaregarden_logo.png

1126 ms

miss-clara.png

miss-clara.png

1712 ms

logo_cafe_opera.png

logo_cafe_opera.png

339 ms

susanne-af-susanne.png

susanne-af-susanne.png

415 ms

giro-pizzeria.png

giro-pizzeria.png

417 ms

logo.png

logo.png

86 ms

arrow_select.png

arrow_select.png

85 ms

flag_sv.png

flag_sv.png

85 ms

flag_en.png

flag_en.png

86 ms

EmptyName_133_2000_610_75_c1_center_center.jpg

EmptyName_133_2000_610_75_c1_center_center.jpg

394 ms

arrow_left.png

arrow_left.png

85 ms

arrow_right.png

arrow_right.png

163 ms

matsal_in_focus.png

matsal_in_focus.png

164 ms

line_page_heading.png

line_page_heading.png

161 ms

Wedding__Party_227_160_c1.jpg

Wedding__Party_227_160_c1.jpg

243 ms

puff_heading_line.png

puff_heading_line.png

161 ms

cafe_opera_puff.jpg

cafe_opera_puff.jpg

238 ms

catering_puff_227_140_c1.jpg

catering_puff_227_140_c1.jpg

353 ms

presentkort_227_140_c1.jpg

presentkort_227_140_c1.jpg

242 ms

UNICEF1_300_140_c1.jpg

UNICEF1_300_140_c1.jpg

319 ms

AWARDS_300_140_c1.jpg

AWARDS_300_140_c1.jpg

469 ms

kallare.jpg

kallare.jpg

320 ms

bg_btn_white.png

bg_btn_white.png

320 ms

icon_facebook.png

icon_facebook.png

398 ms

logo_stockholm.png

logo_stockholm.png

399 ms

logo_svanen.png

logo_svanen.png

400 ms

logo_tag.png

logo_tag.png

429 ms

logo_nobis.png

logo_nobis.png

469 ms

nobis_family_arrow.png

nobis_family_arrow.png

476 ms

main.js

main.js

224 ms

collect

collect

25 ms

24 ms

Accessibility Review

operakallaren.se accessibility score

81

Accessibility Issues

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.

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

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

High

Links do not have a discernible name

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

operakallaren.se best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

operakallaren.se SEO score

83

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    SV

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Operakallaren.se can be misinterpreted by Google and other search engines. Our service has detected that Swedish 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 Operakallaren.se 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

operakallaren.se

Open Graph description is not detected on the main page of Operakallaren. 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: