3 sec in total
155 ms
2.3 sec
574 ms
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Visit certkillers.netWe analyzed Certkillers.net page load time and found that the first response time was 155 ms and then it took 2.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.
certkillers.net performance score
name
value
score
weighting
Value3.4 s
36/100
10%
Value8.9 s
1/100
25%
Value5.3 s
58/100
10%
Value170 ms
93/100
30%
Value0
100/100
15%
Value8.0 s
43/100
10%
155 ms
585 ms
98 ms
64 ms
68 ms
Our browser made a total of 48 requests to load all elements on the main page. We found that 77% of them (37 requests) were addressed to the original Certkillers.net, 10% (5 requests) were made to Fonts.gstatic.com and 4% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (585 ms) belongs to the original domain Certkillers.net.
Page size can be reduced by 1.2 MB (61%)
1.9 MB
741.4 kB
In fact, the total size of Certkillers.net main page is 1.9 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. Javascripts take 922.9 kB which makes up the majority of the site volume.
Potential reduce by 39.7 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. This page needs HTML code to be minified as it can gain 13.3 kB, which is 28% 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 39.7 kB or 85% of the original size.
Potential reduce by 0 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. Cert Killers images are well optimized though.
Potential reduce by 641.3 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 641.3 kB or 69% of the original size.
Potential reduce by 469.0 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. Certkillers.net needs all CSS files to be minified and compressed as it can save up to 469.0 kB or 87% of the original size.
Number of requests can be reduced by 29 (73%)
40
11
The browser has sent 40 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cert Killers. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and from 15 to 1 for CSS and as a result speed up the page load time.
certkillers.net
155 ms
www.certkillers.net
585 ms
bootstrap.min.css
98 ms
font-awesome.min.css
64 ms
animate.min.css
68 ms
owl.carousel.css
56 ms
magnific-popup.css
178 ms
theme-base.css
81 ms
theme-elements.css
116 ms
responsive.css
115 ms
blue-dark.css
178 ms
css
72 ms
settings.css
156 ms
rs-plugin-styles.css
158 ms
jquery-ui.min.css
153 ms
custom.css
167 ms
jquery-1.11.2.min.js
169 ms
plugins-compressed.js
213 ms
js
167 ms
sweetalert.css
152 ms
sweetalert.min.js
196 ms
jquery.themepunch.tools.min.js
194 ms
jquery.themepunch.revolution.min.js
192 ms
revolution.extension.video.min.js
193 ms
revolution.extension.slideanims.min.js
332 ms
revolution.extension.actions.min.js
189 ms
revolution.extension.layeranimation.min.js
189 ms
revolution.extension.navigation.min.js
331 ms
theme-functions.js
331 ms
jquery-ui.min.js
332 ms
custom.js
331 ms
CertKiller_Logo.png
213 ms
CertKiller_SlideImage1.jpg
214 ms
14.jpg
222 ms
overlay-pattern-1.png
212 ms
CertKiller_BookImage_small.png
212 ms
analytics.js
336 ms
mem8YaGs126MiZpBA-UFVZ0e.ttf
420 ms
mem5YaGs126MiZpBA-UN_r8OUuhs.ttf
421 ms
mem5YaGs126MiZpBA-UNirkOUuhs.ttf
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mem5YaGs126MiZpBA-UN7rgOUuhs.ttf
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mem5YaGs126MiZpBA-UN8rsOUuhs.ttf
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fontawesome-webfont.woff
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spin.svg
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collect
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tracking.js
66 ms
ui-bg_flat_75_ffffff_40x100.png
59 ms
get_dynamic_config.js
227 ms
certkillers.net 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.
Impact
Issue
Buttons do not have an accessible name
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
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
certkillers.net 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
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
certkillers.net SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
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
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Certkillers.net 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 Certkillers.net 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.
certkillers.net
Open Graph description is not detected on the main page of Cert Killers. 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: