Report Summary

  • 47

    Performance

    Renders faster than
    66% of other websites

  • 90

    Accessibility

    Visual factors better than
    that of 75% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 62

    SEO

    Google-friendlier than
    22% of websites

me.caltech.edu

Caltech Mechanical and Civil Engineering

Page Load Speed

3.3 sec in total

First Response

456 ms

Resources Loaded

2.6 sec

Page Rendered

195 ms

me.caltech.edu screenshot

About Website

Welcome to me.caltech.edu homepage info - get ready to check Me Caltech best content for United States right away, or after learning these important things about me.caltech.edu

Caltech Engineering and Applied Science Mechanical and Civil Engineering Department website

Visit me.caltech.edu

Key Findings

We analyzed Me.caltech.edu page load time and found that the first response time was 456 ms and then it took 2.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

me.caltech.edu performance score

47

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.1 s

22/100

10%

LCP (Largest Contentful Paint)

Value7.4 s

4/100

25%

SI (Speed Index)

Value5.4 s

56/100

10%

TBT (Total Blocking Time)

Value240 ms

85/100

30%

CLS (Cumulative Layout Shift)

Value0.236

53/100

15%

TTI (Time to Interactive)

Value7.3 s

49/100

10%

Network Requests Diagram

me.caltech.edu

456 ms

www.mce.caltech.edu

1324 ms

application-992faa93576578b0c261e67c0db8b3d78b3e7235ec358bc6c0fcaf31161006e0.css

216 ms

application-5cb7dfedb551cc0e2a412141f716df3d7010fb377c63f67c719dcdca25dcd27f.js

487 ms

jsapi

43 ms

Our browser made a total of 62 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Me.caltech.edu, 79% (49 requests) were made to D39s7jey1vv9fu.cloudfront.net and 15% (9 requests) were made to Mce.caltech.edu. The less responsive or slowest element that took the longest time to load (1.3 sec) relates to the external source Mce.caltech.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 419.5 kB (18%)

Content Size

2.3 MB

After Optimization

1.9 MB

In fact, the total size of Me.caltech.edu main page is 2.3 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. 50% of websites need less resources to load. Images take 1.9 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 25.0 kB

  • Original 32.1 kB
  • After minification 32.0 kB
  • After compression 7.0 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 25.0 kB or 78% of the original size.

Image Optimization

-8%

Potential reduce by 154.2 kB

  • Original 1.9 MB
  • After minification 1.7 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. Me Caltech images are well optimized though.

JavaScript Optimization

-63%

Potential reduce by 159.3 kB

  • Original 252.2 kB
  • After minification 249.5 kB
  • After compression 92.8 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 159.3 kB or 63% of the original size.

CSS Optimization

-80%

Potential reduce by 80.9 kB

  • Original 100.7 kB
  • After minification 91.1 kB
  • After compression 19.8 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. Me.caltech.edu needs all CSS files to be minified and compressed as it can save up to 80.9 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 3 (5%)

Requests Now

60

After Optimization

57

The browser has sent 60 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Me 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.

Accessibility Review

me.caltech.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-hidden="true"] elements contain focusable descendents

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.

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

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

me.caltech.edu best practices score

58

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

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

me.caltech.edu SEO score

62

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Me.caltech.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 Me.caltech.edu main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

Open Graph description is not detected on the main page of Me 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: