1.6 sec in total
175 ms
1 sec
372 ms
Visit keckobservatory.org now to see the best up-to-date Keck Observatory content for United States and also check out these interesting facts you probably never knew about keckobservatory.org
Exploring the universe from the one of the largest, most scientifically productive telescopes on Earth.
Visit keckobservatory.orgWe analyzed Keckobservatory.org page load time and found that the first response time was 175 ms and then it took 1.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.
keckobservatory.org performance score
name
value
score
weighting
Value4.8 s
11/100
10%
Value5.9 s
14/100
25%
Value11.2 s
5/100
10%
Value7,370 ms
0/100
30%
Value0.015
100/100
15%
Value14.6 s
8/100
10%
175 ms
83 ms
112 ms
63 ms
63 ms
Our browser made a total of 58 requests to load all elements on the main page. We found that 67% of them (39 requests) were addressed to the original Keckobservatory.org, 7% (4 requests) were made to F.vimeocdn.com and 5% (3 requests) were made to Staticxx.facebook.com. The less responsive or slowest element that took the longest time to load (582 ms) belongs to the original domain Keckobservatory.org.
Page size can be reduced by 850.6 kB (15%)
5.6 MB
4.7 MB
In fact, the total size of Keckobservatory.org main page is 5.6 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. 60% of websites need less resources to load. Images take 4.6 MB which makes up the majority of the site volume.
Potential reduce by 19.8 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 2.9 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 19.8 kB or 75% of the original size.
Potential reduce by 151.9 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. Keck Observatory images are well optimized though.
Potential reduce by 421.1 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 421.1 kB or 66% of the original size.
Potential reduce by 257.8 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. Keckobservatory.org needs all CSS files to be minified and compressed as it can save up to 257.8 kB or 87% of the original size.
Number of requests can be reduced by 23 (42%)
55
32
The browser has sent 55 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Keck Observatory. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 19 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.
keckobservatory.org
175 ms
widgets.js
83 ms
foundation.css
112 ms
prettyPhoto.css
63 ms
keck.css
63 ms
font-awesome.css
7 ms
jquery.min.js
35 ms
modernizr.foundation.js
43 ms
foundation.min.js
127 ms
jquery.cycle.min.js
64 ms
jquery.foundation.forms.js
63 ms
jquery.placeholder.js
105 ms
jquery.foundation.buttons.js
106 ms
jquery.isotope.min.js
107 ms
jquery.infinitescroll.min.js
106 ms
jquery.prettyPhoto.js
124 ms
audio.min.js
122 ms
mensy.js
123 ms
app.js
122 ms
ga.js
26 ms
print.css
23 ms
about-background.jpg
142 ms
all.js
58 ms
slide-1-new.jpg
582 ms
__utm.gif
43 ms
slide-2-new.jpg
445 ms
slide-3.jpg
491 ms
slide-2.jpg
170 ms
interior-background.jpg
43 ms
keck-logo-small.png
41 ms
home-head-background.png
120 ms
donors.jpg
41 ms
fans.jpg
41 ms
scientists.jpg
91 ms
cosmic_cams.jpg
90 ms
news-bottom-background.png
90 ms
StellarSpectrum-EMB-LRG-NEWS-WEB_135_135_c1.jpg
89 ms
size-of-gas-clouds-ls_135_135_c1.jpg
117 ms
press2_135_135_c1.jpg
118 ms
footer-background.jpg
117 ms
social-facebook.png
116 ms
social-twitter.png
115 ms
social-youtube.png
141 ms
social-instagram.png
141 ms
mp-c.otf
201 ms
fontawesome-webfont.woff
6 ms
90063671
131 ms
152 ms
xd_arbiter.php
54 ms
xd_arbiter.php
63 ms
player.js
104 ms
player.css
88 ms
ga.js
45 ms
vuid.min.js
97 ms
__utm.gif
34 ms
proxy.html
36 ms
469932959.jpg
90 ms
xd_arbiter.php
11 ms
keckobservatory.org accessibility score
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
Buttons do not have an accessible name
<frame> or <iframe> elements do not have a title
Image elements do not have [alt] attributes
Form elements do not have associated labels
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
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
<html> element does not have a [lang] attribute
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
keckobservatory.org 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
Page has valid source maps
keckobservatory.org 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
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
Document uses legible font sizes
Tap targets are not sized appropriately
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Keckobservatory.org 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 Keckobservatory.org 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.
keckobservatory.org
Open Graph description is not detected on the main page of Keck Observatory. 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: