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energy.gov screenshot

Report Summary

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    Performance

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    Accessibility

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    Best Practices

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    SEO

energy.gov

Department of Energy

Page Load Speed

1.7 sec in total

First Response

114 ms

Resources Loaded

1.3 sec

Page Rendered

358 ms

energy.gov screenshot

About Website

Welcome to energy.gov homepage info - get ready to check Energy best content for United States right away, or after learning these important things about energy.gov

The homepage for the US Department of Energy: Energy.gov

Visit energy.gov

Key Findings

We analyzed Energy.gov page load time and found that the first response time was 114 ms and then it took 1.6 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

energy.gov performance score

0

Network Requests Diagram

www.energy.gov

114 ms

js

85 ms

google_tag.script.js

32 ms

google_tag.script.js

43 ms

css_Nc2Rf9z9k3VA1ZJffczQGQV4DPHSYnPbJ90ZghnaQDo.css

49 ms

Our browser made a total of 43 requests to load all elements on the main page. We found that 53% of them (23 requests) were addressed to the original Energy.gov, 19% (8 requests) were made to Googletagmanager.com and 7% (3 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (283 ms) belongs to the original domain Energy.gov.

Page Optimization Overview & Recommendations

Page size can be reduced by 116.9 kB (6%)

Content Size

2.1 MB

After Optimization

2.0 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Energy.gov main page is 2.1 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. 80% 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 1.9 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 57.0 kB

  • Original 68.6 kB
  • After minification 52.1 kB
  • After compression 11.7 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 16.5 kB, which is 24% 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 57.0 kB or 83% of the original size.

Image Optimization

-3%

Potential reduce by 58.7 kB

  • Original 1.9 MB
  • After minification 1.9 MB

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 images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 735 B

  • Original 89.0 kB
  • After minification 89.0 kB
  • After compression 88.3 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. This website has mostly compressed JavaScripts.

CSS Optimization

-6%

Potential reduce by 548 B

  • Original 8.5 kB
  • After minification 8.5 kB
  • After compression 7.9 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. Energy.gov has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 18 (45%)

Requests Now

40

After Optimization

22

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 40 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Energy. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 19 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

www.energy.gov

www.energy.gov

114 ms

js

js

85 ms

google_tag.script.js

google_tag.script.js

32 ms

google_tag.script.js

google_tag.script.js

43 ms

css_Nc2Rf9z9k3VA1ZJffczQGQV4DPHSYnPbJ90ZghnaQDo.css

css_Nc2Rf9z9k3VA1ZJffczQGQV4DPHSYnPbJ90ZghnaQDo.css

49 ms

css_i88rmDkTHI9dpTyc5xblO8Ac1salMOZNZvze0U0dFA0.css

css_i88rmDkTHI9dpTyc5xblO8Ac1salMOZNZvze0U0dFA0.css

54 ms

js_-Xn6Y2uHdkytMdKt13dD6xqU5yXknpTH4KjwuXP-kW0.js

js_-Xn6Y2uHdkytMdKt13dD6xqU5yXknpTH4KjwuXP-kW0.js

51 ms

24bc2d8eeb.js

24bc2d8eeb.js

251 ms

v4-shims.js

v4-shims.js

79 ms

js_6sRLoER_2xGoRrB08SSF8PI3WtCDgybYAk93-sD3sQw.js

js_6sRLoER_2xGoRrB08SSF8PI3WtCDgybYAk93-sD3sQw.js

77 ms

Universal-Federated-Analytics-Min.js

Universal-Federated-Analytics-Min.js

37 ms

js_01Qd3S4Su9QF-GbvCtX0exh4NtPPQDHTLoiwowzOVBs.js

js_01Qd3S4Su9QF-GbvCtX0exh4NtPPQDHTLoiwowzOVBs.js

75 ms

css

css

69 ms

energy_crest.png

energy_crest.png

165 ms

js

js

82 ms

js

js

135 ms

energy-saver.png

energy-saver.png

77 ms

texture_box_blue.jpg

texture_box_blue.jpg

78 ms

Homeowner_F.png

Homeowner_F.png

80 ms

right_circle_icon_gray.svg

right_circle_icon_gray.svg

74 ms

Climate_previews2.jpg

Climate_previews2.jpg

119 ms

Jobs_Preview3.jpg

Jobs_Preview3.jpg

119 ms

Energy_Justice4.jpg

Energy_Justice4.jpg

280 ms

Investment_preview.jpg

Investment_preview.jpg

281 ms

energy_white.png

energy_white.png

131 ms

Karla-Regular.woff

Karla-Regular.woff

128 ms

Karla-Bold.woff

Karla-Bold.woff

122 ms

Investment_preview.jpg

Investment_preview.jpg

128 ms

AdobeStock_72442194.jpeg

AdobeStock_72442194.jpeg

283 ms

MicrosoftTeams-image%20%284%29.png

MicrosoftTeams-image%20%284%29.png

279 ms

gtm.js

gtm.js

79 ms

gtm.js

gtm.js

234 ms

js

js

221 ms

analytics.js

analytics.js

218 ms

js

js

218 ms

js

js

222 ms

k92idz2uaf

k92idz2uaf

221 ms

collect

collect

187 ms

collect

collect

182 ms

collect

collect

157 ms

clarity.js

clarity.js

10 ms

ga-audiences

ga-audiences

35 ms

c.gif

c.gif

8 ms

SEO Factors

energy.gov SEO score

0

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Energy.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 Energy.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.

Social Sharing Optimization

energy.gov

Open Graph data is detected on the main page of Energy. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: