8.6 sec in total
3 sec
5.3 sec
297 ms
Visit astro.berkeley.edu now to see the best up-to-date Astro Berkeley content for United States and also check out these interesting facts you probably never knew about astro.berkeley.edu
Visit astro.berkeley.eduWe analyzed Astro.berkeley.edu page load time and found that the first response time was 3 sec and then it took 5.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.
astro.berkeley.edu performance score
name
value
score
weighting
Value2.5 s
68/100
10%
Value8.0 s
2/100
25%
Value6.6 s
37/100
10%
Value490 ms
59/100
30%
Value0
100/100
15%
Value12.1 s
16/100
10%
3007 ms
754 ms
25 ms
205 ms
209 ms
Our browser made a total of 92 requests to load all elements on the main page. We found that 21% of them (19 requests) were addressed to the original Astro.berkeley.edu, 24% (22 requests) were made to Assets-production-webvanta-com.s3-us-west-2.amazonaws.com and 15% (14 requests) were made to Maps.googleapis.com. The less responsive or slowest element that took the longest time to load (3 sec) belongs to the original domain Astro.berkeley.edu.
Page size can be reduced by 1.1 MB (42%)
2.6 MB
1.5 MB
In fact, the total size of Astro.berkeley.edu main page is 2.6 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. 65% of websites need less resources to load. Javascripts take 1.4 MB which makes up the majority of the site volume.
Potential reduce by 169.9 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 48.1 kB, which is 23% 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 169.9 kB or 82% of the original size.
Potential reduce by 18.6 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. Astro Berkeley images are well optimized though.
Potential reduce by 913.6 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 913.6 kB or 67% of the original size.
Potential reduce by 1.4 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. Astro.berkeley.edu needs all CSS files to be minified and compressed as it can save up to 1.4 kB or 68% of the original size.
Number of requests can be reduced by 34 (49%)
70
36
The browser has sent 70 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Astro Berkeley. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 26 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.
astro.berkeley.edu
3007 ms
bootstrap.min.css
754 ms
css
25 ms
style.css
205 ms
flexslider.css
209 ms
jquery.min.js
37 ms
bootstrap.min.js
260 ms
ucb.plugins.js
249 ms
ucb.utils.js
283 ms
addthis_widget.js
10 ms
jquery.flexslider-min.js
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ShootingStar.js
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webvanta-bootstrap-3.0.0.js
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ga.js
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starfield-tile.jpg
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astro-logo.png
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embed
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astro-logo-inner.png
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Basic%20Give%20Button.jpg
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dot.png
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icon-facebook.png
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icon-twitter.png
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icon-linkedin.png
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berkeley-logo.gif
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berkeley-logo.png
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home-header.png
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Geoff%20Campbell%20Hall.jpg
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Recropped%20Dome%20Campbell.jpg
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Astronaut%20Merch%20Display.jpg
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Leuschner%20Cropped.jpg
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box-veritcal-line.gif
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Isaacson%20CalDay%20Planetarium.jpg
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Colloquium%20Image%20for%20Website.jpg
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DSC_3284.jpg
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default-friends.jpg
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glyphicons-halflings-regular.woff
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starfield-tile.jpg
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home-header.png
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glyphicons-halflings-regular.woff
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Geoff%20Campbell%20Hall.jpg
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Leuschner%20Cropped.jpg
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Astronaut%20Merch%20Display.jpg
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js
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init_embed.js
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box-veritcal-line.gif
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Isaacson%20CalDay%20Planetarium.jpg
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like.php
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DSC_3284.jpg
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default-friends.jpg
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common.js
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map.js
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google4.png
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overlay.js
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util.js
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onion.js
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search_impl.js
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StaticMapService.GetMapImage
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vpc6VNjRPXV.js
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stats.js
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openhand_8_8.cur
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ViewportInfoService.GetViewportInfo
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controls.js
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transparent.png
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css
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entity11.png
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vt
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mapcnt6.png
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AuthenticationService.Authenticate
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300lo.json
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sh.7c7179124ea24ac6ba46caac.html
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layers.3643cb2e25fb91c29386.js
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astro.berkeley.edu 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
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.
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
ARIA IDs are not unique
astro.berkeley.edu 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
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
astro.berkeley.edu 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
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 Astro.berkeley.edu 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 Astro.berkeley.edu 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.
astro.berkeley.edu
Open Graph description is not detected on the main page of Astro Berkeley. 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: