497 ms in total
58 ms
303 ms
136 ms
Welcome to rdf4j.org homepage info - get ready to check RDF4J best content for Indonesia right away, or after learning these important things about rdf4j.org
a Java RDF/SPARQL framework
Visit rdf4j.orgWe analyzed Rdf4j.org page load time and found that the first response time was 58 ms and then it took 439 ms to load all DOM resources and completely render a web page. This is an excellent result, as only 5% of websites can load faster.
rdf4j.org performance score
name
value
score
weighting
Value3.2 s
44/100
10%
Value5.0 s
27/100
25%
Value3.7 s
86/100
10%
Value240 ms
85/100
30%
Value0.038
100/100
15%
Value5.2 s
74/100
10%
58 ms
19 ms
55 ms
6 ms
28 ms
Our browser made a total of 13 requests to load all elements on the main page. We found that 77% of them (10 requests) were addressed to the original Rdf4j.org, 8% (1 request) were made to Fonts.googleapis.com and 8% (1 request) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (89 ms) belongs to the original domain Rdf4j.org.
Page size can be reduced by 13.0 kB (57%)
23.0 kB
10.0 kB
In fact, the total size of Rdf4j.org main page is 23.0 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. 20% of websites need less resources to load. HTML takes 16.9 kB which makes up the majority of the site volume.
Potential reduce by 12.2 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 2.1 kB, which is 13% 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 12.2 kB or 72% of the original size.
Potential reduce by 846 B
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. Obviously, RDF4J needs image optimization as it can save up to 846 B or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
We found no issues to fix!
8
8
The browser has sent 8 CSS, Javascripts, AJAX and image requests in order to completely render the main page of RDF4J. According to our analytics all requests are already optimized.
rdf4j.org
58 ms
callimachus.less
19 ms
united-bootstrap.css
55 ms
scripts.js
6 ms
index
28 ms
css
23 ms
promise-1.0.0.js
89 ms
sesame-logo.png
24 ms
2Q-AW1e_taO6pHwMXcXW5w.ttf
24 ms
glyphicons-halflings-regular.woff
29 ms
glyphicons-halflings-regular.woff
35 ms
88x31.png
38 ms
callimachus-powered.png
16 ms
rdf4j.org accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
rdf4j.org best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Missing source maps for large first-party JavaScript
rdf4j.org SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Rdf4j.org 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 Rdf4j.org 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.
rdf4j.org
Open Graph description is not detected on the main page of RDF4J. 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: