Tools & Wizards About Us
vspo.gsfc.nasa.gov screenshot

Report Summary

  • 42

    Performance

    Renders faster than
    63% of other websites

  • 57

    Accessibility

    Visual factors better than
    that of 24% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

vspo.gsfc.nasa.gov

Heliophysics Data Portal- Solar Space Physics Product Finder

Page Load Speed

998 ms in total

First Response

183 ms

Resources Loaded

606 ms

Page Rendered

209 ms

vspo.gsfc.nasa.gov screenshot

About Website

Click here to check amazing Vspo Gsfc Nasa content for United States. Otherwise, check out these important facts you probably never knew about vspo.gsfc.nasa.gov

The Heliophysics Data Portal makes data easily available from all missions relevant to the global problem of the effects of solar particles and fields on the Earth and the solar system.

Visit vspo.gsfc.nasa.gov

Key Findings

We analyzed Vspo.gsfc.nasa.gov page load time and found that the first response time was 183 ms and then it took 815 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.

Performance Metrics

vspo.gsfc.nasa.gov performance score

42

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

28/100

10%

LCP (Largest Contentful Paint)

Value5.4 s

20/100

25%

SI (Speed Index)

Value4.2 s

78/100

10%

TBT (Total Blocking Time)

Value1,360 ms

16/100

30%

CLS (Cumulative Layout Shift)

Value0.043

99/100

15%

TTI (Time to Interactive)

Value5.5 s

70/100

10%

Network Requests Diagram

vspo.gsfc.nasa.gov

183 ms

vspo.gsfc.nasa.gov

36 ms

heliophysicsdata.gsfc.nasa.gov

33 ms

dispatcher

190 ms

nasa.css

49 ms

Our browser made a total of 35 requests to load all elements on the main page. We found that 6% of them (2 requests) were addressed to the original Vspo.gsfc.nasa.gov, 89% (31 requests) were made to Heliophysicsdata.gsfc.nasa.gov and 3% (1 request) were made to Dap.digitalgov.gov. The less responsive or slowest element that took the longest time to load (190 ms) relates to the external source Heliophysicsdata.gsfc.nasa.gov.

Page Optimization Overview & Recommendations

Page size can be reduced by 108.4 kB (39%)

Content Size

275.8 kB

After Optimization

167.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Vspo.gsfc.nasa.gov main page is 275.8 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. 20% of websites need less resources to load. Images take 186.5 kB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 43.8 kB

  • Original 51.0 kB
  • After minification 40.3 kB
  • After compression 7.2 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 10.7 kB, which is 21% 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 43.8 kB or 86% of the original size.

Image Optimization

-29%

Potential reduce by 54.8 kB

  • Original 186.5 kB
  • After minification 131.6 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. Obviously, Vspo Gsfc Nasa needs image optimization as it can save up to 54.8 kB or 29% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-12%

Potential reduce by 3.8 kB

  • Original 30.6 kB
  • After minification 29.5 kB
  • After compression 26.8 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 3.8 kB or 12% of the original size.

CSS Optimization

-77%

Potential reduce by 6.0 kB

  • Original 7.7 kB
  • After minification 5.8 kB
  • After compression 1.8 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. Vspo.gsfc.nasa.gov needs all CSS files to be minified and compressed as it can save up to 6.0 kB or 77% of the original size.

Requests Breakdown

Number of requests can be reduced by 8 (28%)

Requests Now

29

After Optimization

21

  • Images
  • JavaScript
  • CSS

The browser has sent 29 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vspo Gsfc Nasa. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

vspo.gsfc.nasa.gov

vspo.gsfc.nasa.gov

183 ms

vspo.gsfc.nasa.gov

vspo.gsfc.nasa.gov

36 ms

heliophysicsdata.gsfc.nasa.gov

heliophysicsdata.gsfc.nasa.gov

33 ms

dispatcher

dispatcher

190 ms

nasa.css

nasa.css

49 ms

vspo.css

vspo.css

57 ms

nav.css

nav.css

56 ms

vspoFunctions.js

vspoFunctions.js

55 ms

vspoTooltips.js

vspoTooltips.js

53 ms

Universal-Federated-Analytics-Min.js

Universal-Federated-Analytics-Min.js

65 ms

help_blue.png

help_blue.png

77 ms

geoOrbits_blue.png

geoOrbits_blue.png

77 ms

helioOrbits_blue.png

helioOrbits_blue.png

76 ms

registry_blue.png

registry_blue.png

75 ms

abstracts_blue.png

abstracts_blue.png

74 ms

feedback_blue.png

feedback_blue.png

75 ms

On_data_plots.png

On_data_plots.png

79 ms

On_images_plots.png

On_images_plots.png

79 ms

analytics.js

analytics.js

77 ms

tooltip-bg.gif

tooltip-bg.gif

67 ms

close-icon.gif

close-icon.gif

66 ms

gsfc.gif

gsfc.gif

67 ms

vspo-header.jpg

vspo-header.jpg

76 ms

vspo-header-right.gif

vspo-header-right.gif

68 ms

help_grey.png

help_grey.png

69 ms

geoOrbits_grey.png

geoOrbits_grey.png

69 ms

helioOrbits_grey.png

helioOrbits_grey.png

70 ms

registry_grey.png

registry_grey.png

71 ms

abstracts_grey.png

abstracts_grey.png

71 ms

feedback_grey.png

feedback_grey.png

72 ms

info-blue.gif

info-blue.gif

76 ms

info-gray.gif

info-gray.gif

77 ms

info-white.gif

info-white.gif

74 ms

tile-blue.jpg

tile-blue.jpg

77 ms

nasa_foot_nasa1_black.gif

nasa_foot_nasa1_black.gif

76 ms

Accessibility Review

vspo.gsfc.nasa.gov accessibility score

57

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.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

vspo.gsfc.nasa.gov 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

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

vspo.gsfc.nasa.gov SEO score

69

Search Engine Optimization Advices

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

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 Vspo.gsfc.nasa.gov 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 Vspo.gsfc.nasa.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

vspo.gsfc.nasa.gov

Open Graph description is not detected on the main page of Vspo Gsfc Nasa. 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: