56.2 sec in total
133 ms
42.3 sec
13.8 sec
Visit energystar.gov now to see the best up-to-date ENERGY STAR content for United States and also check out these interesting facts you probably never knew about energystar.gov
ENERGY STAR® is the simple choice for energy efficiency. For more than 20 years, EPA’s ENERGY STAR program has been America’s resource for saving energy and protecting the environment.
Visit energystar.govWe analyzed Energystar.gov page load time and found that the first response time was 133 ms and then it took 56.1 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster.
energystar.gov performance score
name
value
score
weighting
Value3.6 s
32/100
10%
Value6.9 s
7/100
25%
Value5.3 s
57/100
10%
Value4,950 ms
0/100
30%
Value0.139
79/100
15%
Value12.0 s
16/100
10%
133 ms
1999 ms
1134 ms
884 ms
873 ms
Our browser made a total of 141 requests to load all elements on the main page. We found that 97% of them (137 requests) were addressed to the original Energystar.gov, 1% (1 request) were made to Googletagmanager.com and 1% (1 request) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (11.8 sec) relates to the external source Google-analytics.com.
Page size can be reduced by 3.0 MB (37%)
8.1 MB
5.1 MB
In fact, the total size of Energystar.gov main page is 8.1 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. 85% 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 4.8 MB which makes up the majority of the site volume.
Potential reduce by 135.4 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 135.4 kB or 83% of the original size.
Potential reduce by 330.3 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. ENERGY STAR images are well optimized though.
Potential reduce by 799.9 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 799.9 kB or 75% of the original size.
Potential reduce by 1.8 MB
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. Energystar.gov needs all CSS files to be minified and compressed as it can save up to 1.8 MB or 85% of the original size.
Number of requests can be reduced by 33 (25%)
131
98
The browser has sent 131 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ENERGY STAR. 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 19 to 1 for CSS and as a result speed up the page load time.
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energystar.gov accessibility score
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
[id] attributes on active, focusable elements are not unique
Heading elements are not in a sequentially-descending order
Some elements have a [tabindex] value greater than 0
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
Image elements do not have [alt] attributes
energystar.gov 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
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
energystar.gov SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
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
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Energystar.gov 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 Energystar.gov 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.
energystar.gov
Open Graph description is not detected on the main page of ENERGY STAR. 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: