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We analyzed Killercoder.io page load time and found that the first response time was 169 ms and then it took 2.6 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.
killercoder.io performance score
Our browser made a total of 64 requests to load all elements on the main page. We found that 80% of them (51 requests) were addressed to the original Killercoder.io, 8% (5 requests) were made to Fonts.gstatic.com and 6% (4 requests) were made to Cdnjs.cloudflare.com. The less responsive or slowest element that took the longest time to load (821 ms) belongs to the original domain Killercoder.io.
Page size can be reduced by 40.6 kB (7%)
In fact, the total size of Killercoder.io main page is 587.3 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. 60% of websites need less resources to load. Images take 388.2 kB which makes up the majority of the site volume.
Potential reduce by 37.7 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 37.7 kB or 81% of the original size.
Potential reduce by 58 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. Killer Coder images are well optimized though.
Potential reduce by 633 B
Potential reduce by 2.1 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. Killercoder.io has all CSS files already compressed.
Number of requests can be reduced by 38 (73%)
killercoder.io accessibility score
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.
Buttons do not have an accessible name
Image elements do not have [alt] attributes
Links do not have a discernible name
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
These are opportunities to improve keyboard navigation in your application.
Heading elements are not in a sequentially-descending order
killercoder.io best practices score
Trust and Safety
Does not use HTTPS
Ensure CSP is effective against XSS attacks
Browser errors were logged to the console
killercoder.io SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Links are not crawlable
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Image elements do not have [alt] attributes
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/).
Document uses legible font sizes
Tap targets are not sized appropriately
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Killercoder.io 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 Killercoder.io 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.
Open Graph data is detected on the main page of Killer Coder. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: