3.1 sec in total
362 ms
2.5 sec
273 ms
Click here to check amazing Konzerthaus content for Germany. Otherwise, check out these important facts you probably never knew about konzerthaus.de
Das Konzerthaus Berlin bietet Ihnen ein breit gefächertes Programm, vom Sinfoniekonzert über Kammermusik, von Musiktheaterproduktionen zu speziellen Kinderkonzerten, von Alter zu Neuer Musik.
Visit konzerthaus.deWe analyzed Konzerthaus.de page load time and found that the first response time was 362 ms and then it took 2.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.
konzerthaus.de performance score
name
value
score
weighting
Value5.1 s
9/100
10%
Value14.2 s
0/100
25%
Value8.4 s
18/100
10%
Value470 ms
60/100
30%
Value0
100/100
15%
Value8.2 s
41/100
10%
362 ms
576 ms
178 ms
604 ms
474 ms
Our browser made a total of 55 requests to load all elements on the main page. We found that 71% of them (39 requests) were addressed to the original Konzerthaus.de, 11% (6 requests) were made to Dmp.theadex.com and 4% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (794 ms) belongs to the original domain Konzerthaus.de.
Page size can be reduced by 552.6 kB (40%)
1.4 MB
837.4 kB
In fact, the total size of Konzerthaus.de main page is 1.4 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. 25% of websites need less resources to load. Images take 673.3 kB which makes up the majority of the site volume.
Potential reduce by 52.3 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 10.2 kB, which is 16% 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 52.3 kB or 83% of the original size.
Potential reduce by 17.3 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. Konzerthaus images are well optimized though.
Potential reduce by 383.8 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 383.8 kB or 72% of the original size.
Potential reduce by 99.3 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. Konzerthaus.de needs all CSS files to be minified and compressed as it can save up to 99.3 kB or 84% of the original size.
Number of requests can be reduced by 16 (31%)
51
35
The browser has sent 51 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Konzerthaus. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.
konzerthaus.de
362 ms
www.konzerthaus.de
576 ms
master_new.css
178 ms
jquery-1.7.2.min.js
604 ms
jquery.plugins.js
474 ms
logo_konzerthaus_berlin.gif
293 ms
filler_1005x415.gif
174 ms
filler_325x240.gif
174 ms
Slide_Sonderkonzert.jpg
614 ms
Widmann_Joerg_1_credit_Marco_Borggreve.jpg
556 ms
KHO_Konzert_Foto_Marco_Borggreve_1.jpg
476 ms
Bezuidenhout_Kristian_Foto_Marco_Borggreve.jpg
592 ms
Mozart_Matinee_1005x420.jpg
569 ms
Christian_Jost_Credit_Marco_Borggreve.jpg
667 ms
mo_video_icon.png
602 ms
Teaser_Hertha-Spot_Ivan_Rad.jpg
642 ms
vituelles-konzerthaus2.jpg
663 ms
mde_KHB_Sinfoniepaket_Montage_Fruehling.jpg
689 ms
MyFontsWebfontsKit.css
614 ms
containers.css
794 ms
typography_new.css
734 ms
navigation.css
675 ms
audio.css
680 ms
50_hertz_footer.gif
695 ms
jquery.equalizecols.js
696 ms
background.jpg
385 ms
ewi4nyc.js
137 ms
ga.js
48 ms
gtm.js
49 ms
search_input-bg.jpg
95 ms
dotted_line_color.gif
100 ms
icons.png
97 ms
headline_calender.jpg
93 ms
calendar_gradient.jpg
92 ms
dotted_line.gif
176 ms
quote_gradient.jpg
180 ms
footer_input.jpg
188 ms
submit_footer.jpg
190 ms
dotted_line_desaturated.gif
196 ms
adex.js
265 ms
230CBE_0_0.woff
319 ms
hotjar-42832.js
140 ms
video.js
493 ms
__utm.gif
15 ms
collect
65 ms
ga-audiences
35 ms
modules-1f5c71aea63f8df71401422ed80fbe5f.js
25 ms
t.js
88 ms
1.gif
87 ms
analytic.js
174 ms
170 ms
visit-data
207 ms
print.css
97 ms
usersync.gif
167 ms
2.gif
90 ms
konzerthaus.de accessibility score
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
[aria-*] attributes do not match their roles
[aria-hidden="true"] elements contain focusable descendents
ARIA input fields do not have accessible names
Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
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
Image elements do not have [alt] attributes
Links do not have a discernible name
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
konzerthaus.de best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Missing source maps for large first-party JavaScript
konzerthaus.de SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
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
Document uses legible font sizes
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Konzerthaus.de 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 Konzerthaus.de 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.
konzerthaus.de
Open Graph description is not detected on the main page of Konzerthaus. 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: