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sparkenergy.com screenshot

Report Summary

  • 17

    Performance

    Renders faster than
    32% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 69% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

sparkenergy.com

Natural Gas and Electricity Services | Spark Energy

Page Load Speed

1.7 sec in total

First Response

81 ms

Resources Loaded

1.4 sec

Page Rendered

256 ms

sparkenergy.com screenshot

About Website

Visit sparkenergy.com now to see the best up-to-date Spark Energy content for United States and also check out these interesting facts you probably never knew about sparkenergy.com

Founded in 1999, Spark Energy delivers fixed rates on electricity, natural gas, and green energy, along with a variety of energy plans.

Visit sparkenergy.com

Key Findings

We analyzed Sparkenergy.com page load time and found that the first response time was 81 ms and then it took 1.7 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

sparkenergy.com performance score

17

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.8 s

11/100

10%

LCP (Largest Contentful Paint)

Value21.1 s

0/100

25%

SI (Speed Index)

Value13.7 s

2/100

10%

TBT (Total Blocking Time)

Value2,300 ms

5/100

30%

CLS (Cumulative Layout Shift)

Value0.083

94/100

15%

TTI (Time to Interactive)

Value19.7 s

2/100

10%

Network Requests Diagram

sparkenergy.com

81 ms

241 ms

site.css

365 ms

css

53 ms

jquery.min.js

157 ms

Our browser made a total of 30 requests to load all elements on the main page. We found that 83% of them (25 requests) were addressed to the original Sparkenergy.com, 7% (2 requests) were made to Google-analytics.com and 3% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (365 ms) belongs to the original domain Sparkenergy.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 675.3 kB (50%)

Content Size

1.4 MB

After Optimization

684.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sparkenergy.com main page is 1.4 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. 30% of websites need less resources to load. Javascripts take 536.6 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 28.6 kB

  • Original 40.5 kB
  • After minification 36.0 kB
  • After compression 11.8 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 4.5 kB, which is 11% 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 28.6 kB or 71% of the original size.

Image Optimization

-9%

Potential reduce by 43.0 kB

  • Original 490.5 kB
  • After minification 447.5 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. Spark Energy images are well optimized though.

JavaScript Optimization

-67%

Potential reduce by 357.5 kB

  • Original 536.6 kB
  • After minification 535.4 kB
  • After compression 179.1 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 357.5 kB or 67% of the original size.

CSS Optimization

-84%

Potential reduce by 246.2 kB

  • Original 292.5 kB
  • After minification 292.4 kB
  • After compression 46.4 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. Sparkenergy.com needs all CSS files to be minified and compressed as it can save up to 246.2 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 10 (38%)

Requests Now

26

After Optimization

16

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 26 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Spark 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 11 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

sparkenergy.com

sparkenergy.com

81 ms

241 ms

site.css

site.css

365 ms

css

css

53 ms

jquery.min.js

jquery.min.js

157 ms

runfirst.js

runfirst.js

95 ms

reshelper.js

reshelper.js

96 ms

WebResource.axd

WebResource.axd

134 ms

GetResource.ashx

GetResource.ashx

111 ms

ScriptResource.axd

ScriptResource.axd

161 ms

ScriptResource.axd

ScriptResource.axd

133 ms

require.min.js

require.min.js

145 ms

placeholders.jquery.min.js

placeholders.jquery.min.js

161 ms

overlay-plus.png

overlay-plus.png

48 ms

80 ms

thermostat_wintertips.jpg

thermostat_wintertips.jpg

136 ms

spark-logo-sm.png

spark-logo-sm.png

47 ms

spark-watermark.png

spark-watermark.png

48 ms

spark-logo.png

spark-logo.png

47 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

42 ms

hero_2a.jpg

hero_2a.jpg

187 ms

home-zip-overlay-1.png

home-zip-overlay-1.png

51 ms

refer-a-friend.jpg

refer-a-friend.jpg

130 ms

locks_homepromo.jpg

locks_homepromo.jpg

69 ms

light-bulbs.jpg

light-bulbs.jpg

150 ms

analytics.js

analytics.js

53 ms

LogHits

LogHits

96 ms

main.js

main.js

302 ms

collect

collect

11 ms

collect

collect

49 ms

Accessibility Review

sparkenergy.com accessibility score

88

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

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

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

sparkenergy.com best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

sparkenergy.com SEO score

83

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

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

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

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

sparkenergy.com

Open Graph description is not detected on the main page of Spark Energy. 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: