4.1 sec in total
550 ms
3.1 sec
470 ms
Visit rolf.org now to see the best up-to-date Rolf content for United States and also check out these interesting facts you probably never knew about rolf.org
Visit rolf.orgWe analyzed Rolf.org page load time and found that the first response time was 550 ms and then it took 3.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
rolf.org performance score
name
value
score
weighting
Value3.7 s
29/100
10%
Value9.8 s
0/100
25%
Value4.8 s
67/100
10%
Value230 ms
87/100
30%
Value0.213
58/100
15%
Value9.3 s
32/100
10%
550 ms
57 ms
162 ms
84 ms
62 ms
Our browser made a total of 126 requests to load all elements on the main page. We found that 31% of them (39 requests) were addressed to the original Rolf.org, 18% (23 requests) were made to Static.xx.fbcdn.net and 10% (12 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (709 ms) relates to the external source Static.xx.fbcdn.net.
Page size can be reduced by 583.5 kB (20%)
2.9 MB
2.4 MB
In fact, the total size of Rolf.org main page is 2.9 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. 70% of websites need less resources to load. Images take 2.3 MB which makes up the majority of the site volume.
Potential reduce by 33.4 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 33.4 kB or 78% of the original size.
Potential reduce by 59.0 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. Rolf images are well optimized though.
Potential reduce by 299.5 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 299.5 kB or 70% of the original size.
Potential reduce by 191.6 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. Rolf.org needs all CSS files to be minified and compressed as it can save up to 191.6 kB or 83% of the original size.
Number of requests can be reduced by 46 (41%)
112
66
The browser has sent 112 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rolf. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 23 to 1 for JavaScripts and from 20 to 1 for CSS and as a result speed up the page load time.
rolf.org
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bootstrap.min.css
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rolf.org 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 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.
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
Buttons do not have an accessible name
Image elements do not have [alt] attributes
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
rolf.org 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
rolf.org 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
Tap targets are not sized appropriately
EN
EN
UTF8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Rolf.org 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 Rolf.org main page’s claimed encoding is utf8. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.
rolf.org
Open Graph description is not detected on the main page of Rolf. 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: