Access jbullet.advel.cz. JBullet - Java port of Bullet Physics Library

name

value

score

weighting

FCP (First Contentful Paint)

Value0.7 s

100/100

10%

LCP (Largest Contentful Paint)

Value0.7 s

100/100

25%

SI (Speed Index)

Value1.3 s

100/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.086

93/100

15%

TTI (Time to Interactive)

Value0.7 s

100/100

10%

jbullet.advel.cz

747 ms

bullet_logo.png

185 ms

webstart.png

288 ms

Our browser made a total of 3 requests to load all elements on the main page. We found that all of those requests were addressed to Jbullet.advel.cz and no external sources were called. The less responsive or slowest element that took the longest time to load (747 ms) belongs to the original domain Jbullet.advel.cz.

Content Size

13.8 kB

After Optimization

7.0 kB

In fact, the total size of Jbullet.advel.cz main page is 13.8 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. Images take 8.0 kB which makes up the majority of the site volume.

HTML Optimization

-67%

Potential reduce by 3.9 kB

Original 5.8 kB
After minification 5.7 kB
After compression 1.9 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 3.9 kB or 67% of the original size.

Image Optimization

-37%

Potential reduce by 3.0 kB

Original 8.0 kB
After minification 5.0 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. Obviously, JBullet Advel needs image optimization as it can save up to 3.0 kB or 37% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

Requests Now

After Optimization

The browser has sent 2 CSS, Javascripts, AJAX and image requests in order to completely render the main page of JBullet Advel. According to our analytics all requests are already optimized.

Accessibility Issues

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

High

Serves images with low resolution

Search Engine Optimization Advices

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Links do not have descriptive text

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 Jbullet.advel.cz 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 Jbullet.advel.cz 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

jbullet.advel.cz

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