5.7 sec in total
495 ms
5 sec
192 ms
Visit nex.nasa.gov now to see the best up-to-date Nex NASA content for United States and also check out these interesting facts you probably never knew about nex.nasa.gov
NASA.gov brings you the latest images, videos and news from America's space agency. Get the latest updates on NASA missions, watch NASA TV live, and learn about our quest to reveal the unknown an...
Visit nex.nasa.govWe analyzed Nex.nasa.gov page load time and found that the first response time was 495 ms and then it took 5.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.
nex.nasa.gov performance score
name
value
score
weighting
Value38.7 s
0/100
10%
Value44.2 s
0/100
25%
Value38.7 s
0/100
10%
Value2,750 ms
3/100
30%
Value0.059
98/100
15%
Value46.2 s
0/100
10%
495 ms
353 ms
412 ms
241 ms
248 ms
Our browser made a total of 74 requests to load all elements on the main page. We found that 89% of them (66 requests) were addressed to the original Nex.nasa.gov, 4% (3 requests) were made to Fonts.googleapis.com and 4% (3 requests) were made to Eoimages.gsfc.nasa.gov. The less responsive or slowest element that took the longest time to load (1.9 sec) belongs to the original domain Nex.nasa.gov.
Page size can be reduced by 849.2 kB (42%)
2.0 MB
1.2 MB
In fact, the total size of Nex.nasa.gov main page is 2.0 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. 40% of websites need less resources to load. Images take 1.0 MB which makes up the majority of the site volume.
Potential reduce by 27.6 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 10.8 kB, which is 33% 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 27.6 kB or 84% of the original size.
Potential reduce by 76.4 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. Nex NASA images are well optimized though.
Potential reduce by 607.9 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 607.9 kB or 76% of the original size.
Potential reduce by 137.2 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. Nex.nasa.gov needs all CSS files to be minified and compressed as it can save up to 137.2 kB or 82% of the original size.
Number of requests can be reduced by 34 (51%)
67
33
The browser has sent 67 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nex 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 14 to 1 for JavaScripts and from 22 to 1 for CSS and as a result speed up the page load time.
nex.nasa.gov
495 ms
nex.nasa.gov
353 ms
412 ms
main_reset.css
241 ms
label.css
248 ms
form.css
248 ms
table.css
246 ms
comment.css
245 ms
core.css
398 ms
typography.css
476 ms
main_page_nex.css
484 ms
default.css
487 ms
bar.css
484 ms
nivo-slider.css
486 ms
jquery.fancybox.css
634 ms
boxes_nex.css
711 ms
video-js.css
797 ms
css
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css
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core_nex_main_page.css
720 ms
typography_nex.css
722 ms
banner_nex.css
722 ms
elegant-menu.css
946 ms
jquery_mini.js
1181 ms
c3_js.js
956 ms
jquery-1.7.1.min.js
1193 ms
modernizr-2.5.3.min.js
957 ms
jquery.fancybox.pack.js
1109 ms
video.js
1340 ms
fancybox.js
1194 ms
jquery-ui.js
1902 ms
jquery.nivo.slider.pack.js
1347 ms
isotope.js
1419 ms
main.js
1431 ms
federatedanalytics.all.min.js
1510 ms
elegant-menu.js
1577 ms
css
19 ms
font-awesome.css
719 ms
ga.js
42 ms
banner_background.jpg
433 ms
poyang_oli_2013358_tn_grid.jpg
93 ms
sacramento_tmo_2016077_front.jpg
114 ms
febtemps_gis_2016_th_grid.png
97 ms
nasa_logo.png
246 ms
nex_logo.png
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loading.gif
247 ms
nex_intro.jpg
481 ms
nex_projects.jpg
482 ms
nex_explore.jpg
721 ms
DB_icon.jpg
485 ms
usersProjects.jpg
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NEX_tools.jpg
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sbuUsage.jpg
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NAFD-NEXthumbnail.jpg_200x132.jpg
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image.tif_200x132.jpg
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NEX-Facts-small.jpg_200x132.jpg
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AGU_logo.jpg
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ICCS_logo.png
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ESIP_logo.jpg
1041 ms
SC16_logo.png
1116 ms
deep_belief_networks.jpg
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nex-collab.jpg
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nex-computing.jpg
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nex-data.jpg
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nex-science.jpg
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1407 ms
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NAFD-NEXthumbnail.jpg_200x132.jpg
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image.tif_200x132.jpg
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NEX-Facts-small.jpg_200x132.jpg
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arrows.png
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bullets.png
144 ms
nex.nasa.gov accessibility score
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
button, link, and menuitem elements do not have accessible names.
[aria-hidden="true"] elements contain focusable descendents
[role]s are not contained by their required parent element
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
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
Links do not have a discernible name
nex.nasa.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
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Missing source maps for large first-party JavaScript
nex.nasa.gov SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
Tap targets are not sized appropriately
EN
N/A
ISO-8859-1
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nex.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 Nex.nasa.gov main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.
nex.nasa.gov
Open Graph description is not detected on the main page of Nex 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: