Report Summary

  • 64

    Performance

    Renders faster than
    78% of other websites

  • 95

    Accessibility

    Visual factors better than
    that of 87% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

physics.ucsb.edu

Home | Department of Physics | UC Santa Barbara

Page Load Speed

2.6 sec in total

First Response

643 ms

Resources Loaded

1.7 sec

Page Rendered

267 ms

physics.ucsb.edu screenshot

About Website

Visit physics.ucsb.edu now to see the best up-to-date Physics UC Sb content for United States and also check out these interesting facts you probably never knew about physics.ucsb.edu

Visit physics.ucsb.edu

Key Findings

We analyzed Physics.ucsb.edu page load time and found that the first response time was 643 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 40% of websites can load faster.

Performance Metrics

physics.ucsb.edu performance score

64

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

68/100

10%

LCP (Largest Contentful Paint)

Value7.0 s

6/100

25%

SI (Speed Index)

Value2.5 s

98/100

10%

TBT (Total Blocking Time)

Value340 ms

74/100

30%

CLS (Cumulative Layout Shift)

Value0.059

98/100

15%

TTI (Time to Interactive)

Value4.0 s

88/100

10%

Network Requests Diagram

physics.ucsb.edu

643 ms

css_SMdBoXcxWbQ_UwQHa42F3k3z42CoIl2dpyGAdD1GAts.css

72 ms

css_7F9__s7zO3pp3473eCor9PPP9fxT3Uw1zRhctXaE3L0.css

137 ms

css_vZ_wrMQ9Og-YPPxa1q4us3N7DsZMJa-14jShHgRoRNo.css

139 ms

css_RKGzVqtq4AeUSSBBTE_v35PoDhbOW9JiV2gEdOSbL50.css

141 ms

Our browser made a total of 41 requests to load all elements on the main page. We found that 95% of them (39 requests) were addressed to the original Physics.ucsb.edu, 2% (1 request) were made to Fonts.googleapis.com and 2% (1 request) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (643 ms) belongs to the original domain Physics.ucsb.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 326.7 kB (25%)

Content Size

1.3 MB

After Optimization

997.8 kB

In fact, the total size of Physics.ucsb.edu main page is 1.3 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. Images take 946.8 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 35.5 kB

  • Original 43.8 kB
  • After minification 41.1 kB
  • After compression 8.2 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 35.5 kB or 81% of the original size.

Image Optimization

-4%

Potential reduce by 35.6 kB

  • Original 946.8 kB
  • After minification 911.2 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. Physics UC Sb images are well optimized though.

JavaScript Optimization

-75%

Potential reduce by 184.6 kB

  • Original 245.8 kB
  • After minification 198.8 kB
  • After compression 61.2 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 184.6 kB or 75% of the original size.

CSS Optimization

-81%

Potential reduce by 71.0 kB

  • Original 88.1 kB
  • After minification 77.9 kB
  • After compression 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. Physics.ucsb.edu needs all CSS files to be minified and compressed as it can save up to 71.0 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 13 (33%)

Requests Now

39

After Optimization

26

The browser has sent 39 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Physics UC Sb. 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 from 11 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

physics.ucsb.edu accessibility score

95

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

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

High

Links do not have a discernible name

Best Practices

physics.ucsb.edu best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

physics.ucsb.edu SEO score

83

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

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

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Physics.ucsb.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 Physics.ucsb.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.

Social Sharing Optimization

Open Graph description is not detected on the main page of Physics UC Sb. 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: