4.1 sec in total
573 ms
1.8 sec
1.8 sec
Visit jsconf.co now to see the best up-to-date JSConf content for United States and also check out these interesting facts you probably never knew about jsconf.co
JSConf Colombia 2023
Visit jsconf.coWe analyzed Jsconf.co page load time and found that the first response time was 573 ms and then it took 3.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
jsconf.co performance score
name
value
score
weighting
Value2.1 s
80/100
10%
Value8.3 s
2/100
25%
Value2.1 s
99/100
10%
Value140 ms
95/100
30%
Value0.002
100/100
15%
Value3.4 s
93/100
10%
573 ms
61 ms
162 ms
25 ms
165 ms
Our browser made a total of 115 requests to load all elements on the main page. We found that 49% of them (56 requests) were addressed to the original Jsconf.co, 16% (18 requests) were made to B.tiles.mapbox.com and 15% (17 requests) were made to A.tiles.mapbox.com. The less responsive or slowest element that took the longest time to load (573 ms) belongs to the original domain Jsconf.co.
Page size can be reduced by 720.5 kB (21%)
3.5 MB
2.8 MB
In fact, the total size of Jsconf.co main page is 3.5 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 2.5 MB which makes up the majority of the site volume.
Potential reduce by 61.3 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. 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 61.3 kB or 78% of the original size.
Potential reduce by 86.9 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. JSConf images are well optimized though.
Potential reduce by 380.4 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 380.4 kB or 69% of the original size.
Potential reduce by 191.9 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. Jsconf.co needs all CSS files to be minified and compressed as it can save up to 191.9 kB or 55% of the original size.
We found no issues to fix!
109
109
The browser has sent 109 CSS, Javascripts, AJAX and image requests in order to completely render the main page of JSConf. According to our analytics all requests are already optimized.
jsconf.co
573 ms
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jsconf.co 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.
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
Document doesn't have a <title> element
Links do not have a discernible name
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
jsconf.co best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
jsconf.co SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Document doesn't have a <title> element
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
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Jsconf.co 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 Jsconf.co 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.
jsconf.co
Open Graph description is not detected on the main page of JSConf. 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: