2.6 sec in total
611 ms
1.6 sec
330 ms
Click here to check amazing Seismolab Caltech content for United States. Otherwise, check out these important facts you probably never knew about seismolab.caltech.edu
Caltech's Seismological Laboratory, an arm of the Division of Geological and Planetary Sciences (GPS), was established in 1921. It has a distinguished history of leadership in science and serving the ...
Visit seismolab.caltech.eduWe analyzed Seismolab.caltech.edu page load time and found that the first response time was 611 ms and then it took 2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.
seismolab.caltech.edu performance score
name
value
score
weighting
Value2.9 s
54/100
10%
Value3.0 s
77/100
25%
Value3.7 s
85/100
10%
Value1,130 ms
22/100
30%
Value0.14
79/100
15%
Value4.7 s
80/100
10%
611 ms
88 ms
208 ms
141 ms
210 ms
Our browser made a total of 35 requests to load all elements on the main page. We found that 91% of them (32 requests) were addressed to the original Seismolab.caltech.edu, 6% (2 requests) were made to Google-analytics.com and 3% (1 request) were made to Ajax.googleapis.com. The less responsive or slowest element that took the longest time to load (915 ms) belongs to the original domain Seismolab.caltech.edu.
Page size can be reduced by 72.6 kB (10%)
762.6 kB
690.0 kB
In fact, the total size of Seismolab.caltech.edu main page is 762.6 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 30% of websites need less resources to load. Images take 666.7 kB which makes up the majority of the site volume.
Potential reduce by 14.5 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. This page needs HTML code to be minified as it can gain 3.5 kB, which is 19% 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 14.5 kB or 78% of the original size.
Potential reduce by 12.8 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. Seismolab Caltech images are well optimized though.
Potential reduce by 28.0 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 28.0 kB or 50% of the original size.
Potential reduce by 17.2 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. Seismolab.caltech.edu needs all CSS files to be minified and compressed as it can save up to 17.2 kB or 80% of the original size.
Number of requests can be reduced by 3 (9%)
34
31
The browser has sent 34 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Seismolab Caltech. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.
seismolab.caltech.edu
611 ms
jquery.min.js
88 ms
jquery.bxslider.min.js
208 ms
jquery.bxslider.css
141 ms
main.css
210 ms
jquery.cycle.min.js
213 ms
ga.js
36 ms
121-banner740-16pt.gif
142 ms
search-gray.gif
143 ms
header-bg.jpg
144 ms
banner-1.jpg
213 ms
seismolab.jpg
145 ms
banner1.jpg
215 ms
banner2.jpg
281 ms
banner3.jpg
351 ms
banner4.jpg
282 ms
banner5.jpg
359 ms
banner6.jpg
426 ms
banner7.jpg
356 ms
banner8.jpg
418 ms
banner9.jpg
489 ms
nav-bg.jpg
493 ms
EEW-DC.jpg
562 ms
Seismic%20Coupling.jpg
707 ms
Earthquake%20Science.jpg
915 ms
Harkrider.jpg
703 ms
Globe-GordonBelPrize-1.jpg
764 ms
button-sprite.jpg
631 ms
rss-icon.jpg
701 ms
cit-logo.gif
771 ms
gps-logo.gif
842 ms
seismo-logo.gif
840 ms
__utm.gif
12 ms
bx_loader.gif
753 ms
print.css
72 ms
seismolab.caltech.edu 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.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
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
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
Form elements do not have associated labels
Links do not have a discernible name
seismolab.caltech.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
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
seismolab.caltech.edu SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Seismolab.caltech.edu 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 Seismolab.caltech.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.
seismolab.caltech.edu
Open Graph description is not detected on the main page of Seismolab Caltech. 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: