Analyze

nasa.gov: NASA

NASA.gov brings you the latest news, images and videos from America's space agency, pioneering the future in space exploration, scientific discovery and aeronautics research.

Page load speed analysis

  • 51/100

    Normal result
  • 6

    Successful tests
  • 2

    Failed tests
  • First response

    149 ms

  • Resources loaded

    46.8 sec

  • Page rendered

    8.2 sec

  • Total page load time

    55.2 sec

Click here to check amazing NASA content for United States. Otherwise, check out these important facts you probably never knew about nasa.gov

We analyzed Nasa.gov page load time and found that the first response time was 149 ms and then it took 55 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster. Unfortunately, there were 6 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Page optimization

  • HTML 38.1 kB
    Images 1.7 MB
    Javascripts 5.1 MB
    CSS 601.4 kB

    In fact, the total size of Nasa.gov main page is 7.4 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. 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. Javascripts take 5.1 MB which makes up the majority of the site volume.

    • Original 38.1 kB
    • After minification 37.1 kB
    • After compression 9.6 kB

    HTML optimization

    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 28.4 kB or 75% of the original size.

    • Original 1.7 MB
    • After optimization 1.6 MB

    Image optimization

    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. NASA images are well optimized though.

    • Original 5.1 MB
    • After minification 3.4 MB
    • After compression 903.5 kB

    JavaScript optimization

    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 4.2 MB or 82% of the original size.

    • Original 601.4 kB
    • After minification 518.2 kB
    • After compression 90.8 kB

    CSS optimization

    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. Nasa.gov needs all CSS files to be minified and compressed as it can save up to 510.6 kB or 85% of the original size.

Network requests diagram

  • nasa.gov
  • www.nasa.gov
  • scald_before_after_image.css
  • scald_htmlsnippet.css
  • scald_iframe.css
  • vendor.css
  • nasa.css
  • Universal-Federated-Analytics-Min.js
  • vendor.js
  • nasa.js
  • css
  • analytics.js
  • iframe_api
  • gateway.min.js
  • 7XUFZ5tgS-tD6QamInJTcU3KvHLhcNjEHFQzwNtdMQY.ttf
  • anMUvcNT0H1YN4FII8wpr4e2tK5W43RXgBRKkM4A5Qg.ttf
  • anMUvcNT0H1YN4FII8wprzsSLeNQG2cy_mKit6iEdYs.ttf
  • wrapper.js
  • addthis_widget.js
  • nasa-logo.svg
  • _search
  • PLiuUQ9asub3Qq1AQRirDI-naOwo1H5gaB.json
  • 408750
  • 408556
  • 408628
  • 408904
  • main-menu.json
  • widgets.js
  • john-casani-8-4-77_30584323590_o.jpg
  • 36803222676_c886d8d8c0_o.jpg
  • starfield-banner.jpg
  • menu.png
  • search.svg
  • share.svg
  • ring.svg
  • collect
  • collect
  • www-widgetapi.js
  • 3187.json
  • potw1735a.jpg
  • camera90.svg
  • pia21438.jpg
  • foresee_trigger.js
  • bridenstine_officialheadshot.jpg
  • harvey-iss-tuesday_0.jpg
  • 3456.json
  • 3131.json
  • 3695.json
  • nhq2017090300022.jpg
  • image_1-irmainfrared-suominpp-9117.jpg
  • vapslow.gif
  • potw1735a.jpg

Our browser made a total of 52 requests to load all elements on the main page. We found that 71% of them (37 requests) were addressed to the original Nasa.gov, 6% (3 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 (24.8 sec) relates to the external source S7.addthis.com.

Additional info on nasa.gov

Requests

The browser has sent 43 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 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 7 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

7

Javascripts

19

Images

6

CSS

11

AJAX

43

All

Possible request optimization

1

Javascripts

19

Images

1

CSS

11

AJAX

11

Optimized

32

All

Normal result

Redirects

As for redirects, our browser was forwarded to https://www.nasa.gov/ before it reached this domain.

IP address

Nasa.gov uses IP addresses which are currently shared with 16 other domains. The more sites share the same stack of IP addresses, the higher the host server’s workload is. It is strongly recommended that the host server should be changed or the hosting provider should be requested to give a different (separate) IP address for this domain.

Normal result

IP Trace

nasa.gov

phoenix.edu

xgn.nl

manchestereveningnews.co.uk

kajabi.com

13.249.87.15

nasa.gov

liveperson.com

viamichelin.es

worldsoccer.com

clickorlando.com

13.249.87.25

nasa.gov

healthgrades.com

daveramsey.com

weatherzone.com.au

find-job.net

13.249.87.68

DNS records

Type Host Target/ip TTL Other
A

nasa.gov

52.0.14.116 600
A

nasa.gov

23.22.39.120 600
NS

nasa.gov

ns2.nasa.gov 600
NS

nasa.gov

ns3.nasa.gov 600
NS

nasa.gov

ns1.nasa.gov 600

HTTPS certificate

SSL Certificate

Nasa.gov has no SSL certificate. Web browsing can be safer with HTTPS connection, so we suggest that it should be obtained for this site.

Poor result

Visitor World Map

Country of origin for 40.9% of all visits is United States. It’s good for Nasa.gov that their server is also located in United States, as that enables the majority of their visitors to benefit from a much faster page load time.

Good result

Good result

Social Sharing Optimization

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

nasa.gov

Language and encoding

Good result

Language

EN en language flag

Detected

EN en language flag

Claimed

Encoding

UTF-8

Claimed

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

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