Tools & Wizards About Us

Report Summary

  • 53

    Performance

    Renders faster than
    70% of other websites

  • 90

    Accessibility

    Visual factors better than
    that of 74% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 97

    SEO

    Google-friendlier than
    91% of websites

sandera.ucsd.edu

The San Diego Education Research Alliance (SanDERA) Home Page

Page Load Speed

42.1 sec in total

First Response

207 ms

Resources Loaded

40.9 sec

Page Rendered

1 sec

About Website

Welcome to sandera.ucsd.edu homepage info - get ready to check SanDERA Ucsd best content for United States right away, or after learning these important things about sandera.ucsd.edu

The San Diego Education Research Alliance (SanDERA) at the University of California, San Diego (UC San Diego) conducts rigorous and relevant research that contributes to the development of education p...

Visit sandera.ucsd.edu

Key Findings

We analyzed Sandera.ucsd.edu page load time and found that the first response time was 207 ms and then it took 41.9 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster. Unfortunately, there were 2 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

sandera.ucsd.edu performance score

53

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.4 s

16/100

10%

LCP (Largest Contentful Paint)

Value8.7 s

1/100

25%

SI (Speed Index)

Value6.9 s

33/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.158

74/100

15%

TTI (Time to Interactive)

Value5.4 s

71/100

10%

Network Requests Diagram

sandera.ucsd.edu

207 ms

sandera.ucsd.edu

340 ms

bootstrap.min.css

459 ms

base.min.css

402 ms

homepage.css

279 ms

Our browser made a total of 31 requests to load all elements on the main page. We found that 26% of them (8 requests) were addressed to the original Sandera.ucsd.edu, 48% (15 requests) were made to Cdn.ucsd.edu and 6% (2 requests) were made to Ucsd.edu. The less responsive or slowest element that took the longest time to load (20 sec) relates to the external source Qa-cdn.ucsd.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 862.1 kB (11%)

Content Size

7.9 MB

After Optimization

7.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sandera.ucsd.edu main page is 7.9 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. 30% of websites need less resources to load. Images take 7.5 MB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 30.4 kB

  • Original 34.3 kB
  • After minification 15.2 kB
  • After compression 3.9 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 19.1 kB, which is 56% 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 30.4 kB or 89% of the original size.

Image Optimization

-7%

Potential reduce by 549.8 kB

  • Original 7.5 MB
  • After minification 7.0 MB

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. SanDERA Ucsd images are well optimized though.

JavaScript Optimization

-67%

Potential reduce by 113.8 kB

  • Original 169.0 kB
  • After minification 168.7 kB
  • After compression 55.2 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 113.8 kB or 67% of the original size.

CSS Optimization

-83%

Potential reduce by 168.1 kB

  • Original 202.9 kB
  • After minification 197.1 kB
  • After compression 34.8 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. Sandera.ucsd.edu needs all CSS files to be minified and compressed as it can save up to 168.1 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 12 (52%)

Requests Now

23

After Optimization

11

  • Images
  • JavaScript
  • CSS

The browser has sent 23 CSS, Javascripts, AJAX and image requests in order to completely render the main page of SanDERA Ucsd. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

sandera.ucsd.edu accessibility score

90

Accessibility Issues

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

High

ARIA IDs are not unique

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Some elements have a [tabindex] value greater than 0

Best Practices

sandera.ucsd.edu best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

sandera.ucsd.edu SEO score

97

Search Engine Optimization Advices

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 Sandera.ucsd.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 Sandera.ucsd.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 SanDERA Ucsd. 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: