3.1 sec in total
224 ms
2.3 sec
621 ms
Click here to check amazing HEASARC Gsfc NASA content for United States. Otherwise, check out these important facts you probably never knew about heasarc.gsfc.nasa.gov
NASA's High Energy Astrophysics Science Archive Research Center is for scientists and astronomy enthusiasts seeking actual data from a multitude of space-based observatories. HEASARC is the primary ar...
Visit heasarc.gsfc.nasa.govWe analyzed Heasarc.gsfc.nasa.gov page load time and found that the first response time was 224 ms and then it took 2.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.
heasarc.gsfc.nasa.gov performance score
name
value
score
weighting
Value4.5 s
14/100
10%
Value9.4 s
1/100
25%
Value10.9 s
6/100
10%
Value11,820 ms
0/100
30%
Value0.021
100/100
15%
Value30.9 s
0/100
10%
224 ms
105 ms
131 ms
152 ms
130 ms
Our browser made a total of 30 requests to load all elements on the main page. We found that 87% of them (26 requests) were addressed to the original Heasarc.gsfc.nasa.gov, 7% (2 requests) were made to Google-analytics.com and 3% (1 request) were made to Dap.digitalgov.gov. The less responsive or slowest element that took the longest time to load (451 ms) relates to the external source Apod.nasa.gov.
Page size can be reduced by 2.1 MB (65%)
3.2 MB
1.1 MB
In fact, the total size of Heasarc.gsfc.nasa.gov main page is 3.2 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. 45% of websites need less resources to load. Javascripts take 2.3 MB which makes up the majority of the site volume.
Potential reduce by 29.5 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. 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 29.5 kB or 79% of the original size.
Potential reduce by 205.1 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, HEASARC Gsfc NASA needs image optimization as it can save up to 205.1 kB or 35% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 1.6 MB
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 1.6 MB or 69% of the original size.
Potential reduce by 311.5 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. Heasarc.gsfc.nasa.gov needs all CSS files to be minified and compressed as it can save up to 311.5 kB or 90% of the original size.
Number of requests can be reduced by 13 (45%)
29
16
The browser has sent 29 CSS, Javascripts, AJAX and image requests in order to completely render the main page of HEASARC 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 7 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.
heasarc.gsfc.nasa.gov
224 ms
reset.css
105 ms
base.css
131 ms
dropdown.css
152 ms
AstroTheme.css
130 ms
jquery.min.js
189 ms
portal.css
124 ms
asd.css
122 ms
overlib.js
167 ms
Universal-Federated-Analytics-Min.js
97 ms
goto_handler.js
141 ms
tagline.js
137 ms
analytics.js
206 ms
CannonSupernova_English_960.jpg
451 ms
gsfc_tiled_bg_stars.jpg
274 ms
bg-astro.jpg
304 ms
nasa_header_logo1.gif
272 ms
search_go.jpg
271 ms
heasarcbanner_new2b.png
420 ms
current_thumbnail.jpg
300 ms
feed-icon-28x28.gif
274 ms
goddardsignature2.png
273 ms
astro_bgnav.png
220 ms
SBForm_min.html
344 ms
rsaquo_gray.gif
150 ms
collect
34 ms
classic.json
30 ms
Xamin-all.css
124 ms
app.js
335 ms
print.css
26 ms
heasarc.gsfc.nasa.gov accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
heasarc.gsfc.nasa.gov best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Missing source maps for large first-party JavaScript
heasarc.gsfc.nasa.gov SEO score
EN
EN
ISO-8859-1
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Heasarc.gsfc.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 Heasarc.gsfc.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.
heasarc.gsfc.nasa.gov
Open Graph description is not detected on the main page of HEASARC 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: