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dining.caltech.edu screenshot

Report Summary

  • 64

    Performance

    Renders faster than
    77% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

dining.caltech.edu

Dining

Page Load Speed

3.9 sec in total

First Response

1 sec

Resources Loaded

2.3 sec

Page Rendered

521 ms

dining.caltech.edu screenshot

About Website

Click here to check amazing Dining Caltech content for United States. Otherwise, check out these important facts you probably never knew about dining.caltech.edu

Visit dining.caltech.edu

Key Findings

We analyzed Dining.caltech.edu page load time and found that the first response time was 1 sec and then it took 2.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

dining.caltech.edu performance score

64

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.2 s

19/100

10%

LCP (Largest Contentful Paint)

Value7.4 s

4/100

25%

SI (Speed Index)

Value4.3 s

76/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value4.2 s

85/100

10%

Network Requests Diagram

dining.caltech.edu

1039 ms

dataTables.bootstrap4.min.css

53 ms

responsive.dataTables.min.css

65 ms

output.24941ade7632.css

190 ms

output.1a44fafaf640.css

185 ms

Our browser made a total of 49 requests to load all elements on the main page. We found that 37% of them (18 requests) were addressed to the original Dining.caltech.edu, 39% (19 requests) were made to Caltechsites-prod.s3.amazonaws.com and 10% (5 requests) were made to Cdn.datatables.net. The less responsive or slowest element that took the longest time to load (1 sec) belongs to the original domain Dining.caltech.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 372.2 kB (8%)

Content Size

4.7 MB

After Optimization

4.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Dining.caltech.edu main page is 4.7 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 4.4 MB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 122.4 kB

  • Original 163.8 kB
  • After minification 153.3 kB
  • After compression 41.4 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 122.4 kB or 75% of the original size.

Image Optimization

-6%

Potential reduce by 249.7 kB

  • Original 4.4 MB
  • After minification 4.1 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. Dining Caltech images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 50 B

  • Original 76.8 kB
  • After minification 76.8 kB
  • After compression 76.7 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. This website has mostly compressed JavaScripts.

CSS Optimization

-0%

Potential reduce by 103 B

  • Original 62.6 kB
  • After minification 62.6 kB
  • After compression 62.5 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. Dining.caltech.edu has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 17 (37%)

Requests Now

46

After Optimization

29

  • Images
  • JavaScript
  • CSS

The browser has sent 46 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dining 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 15 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

dining.caltech.edu

dining.caltech.edu

1039 ms

dataTables.bootstrap4.min.css

dataTables.bootstrap4.min.css

53 ms

responsive.dataTables.min.css

responsive.dataTables.min.css

65 ms

output.24941ade7632.css

output.24941ade7632.css

190 ms

output.1a44fafaf640.css

output.1a44fafaf640.css

185 ms

jquery.min.js

jquery.min.js

39 ms

jquery.mousewheel.min.js

jquery.mousewheel.min.js

187 ms

MathJax.js

MathJax.js

65 ms

underscore-min.js

underscore-min.js

82 ms

apexcharts

apexcharts

87 ms

jquery.dataTables.min.js

jquery.dataTables.min.js

59 ms

dataTables.responsive.min.js

dataTables.responsive.min.js

52 ms

dataTables.bootstrap4.min.js

dataTables.bootstrap4.min.js

85 ms

output.54b9aeca30a0.js

output.54b9aeca30a0.js

289 ms

output.2ef32f93ff4f.js

output.2ef32f93ff4f.js

311 ms

CL.js

CL.js

40 ms

CL-doi-media.js

CL-doi-media.js

42 ms

output.284c8b74e6dc.js

output.284c8b74e6dc.js

309 ms

anchor.js

anchor.js

255 ms

TeX-MML-AM_CHTML.js

TeX-MML-AM_CHTML.js

90 ms

Welcome_Edit.2e16d0ba.fill-933x525-c100.png

Welcome_Edit.2e16d0ba.fill-933x525-c100.png

667 ms

caltech-new-logo.png

caltech-new-logo.png

72 ms

icon-search.png

icon-search.png

121 ms

menu-burger.png

menu-burger.png

120 ms

icon-chevron-left.png

icon-chevron-left.png

121 ms

icon-chevron-right.png

icon-chevron-right.png

120 ms

bg-footer.png

bg-footer.png

120 ms

flame.png

flame.png

138 ms

icon-footerpin.png

icon-footerpin.png

140 ms

Pizza_Salad.2e16d0ba.fill-933x525-c100.jpg

Pizza_Salad.2e16d0ba.fill-933x525-c100.jpg

400 ms

IMG_2217.966fc3f2.fill-933x525-c100.jpg

IMG_2217.966fc3f2.fill-933x525-c100.jpg

412 ms

Fruit_Stand_3_-_Edited.2e16d0ba.fill-1600x300-c100.jpg

Fruit_Stand_3_-_Edited.2e16d0ba.fill-1600x300-c100.jpg

507 ms

The_Red_Tofu_Sandwich.2e16d0ba.fill-534x400-c100.jpg

The_Red_Tofu_Sandwich.2e16d0ba.fill-534x400-c100.jpg

356 ms

4b429e17-6c4f-4955-84f6-de61e.2e16d0ba.fill-534x400-c100.jpg

4b429e17-6c4f-4955-84f6-de61e.2e16d0ba.fill-534x400-c100.jpg

373 ms

c57b66dc-fd7f-4dfc-a37a-23240.2e16d0ba.fill-534x400-c100.jpg

c57b66dc-fd7f-4dfc-a37a-23240.2e16d0ba.fill-534x400-c100.jpg

497 ms

Fruit_Stand_-_Edited.2e16d0ba.fill-534x400-c100.jpg

Fruit_Stand_-_Edited.2e16d0ba.fill-534x400-c100.jpg

515 ms

Farmers_market_students_-_Edi.2e16d0ba.fill-534x400-c100.jpg

Farmers_market_students_-_Edi.2e16d0ba.fill-534x400-c100.jpg

479 ms

Strawberries_and_Blueberries_.2e16d0ba.fill-534x400-c100.jpg

Strawberries_and_Blueberries_.2e16d0ba.fill-534x400-c100.jpg

530 ms

Fruit_Boxes_-_Edited.2e16d0ba.fill-534x400-c100.jpg

Fruit_Boxes_-_Edited.2e16d0ba.fill-534x400-c100.jpg

574 ms

9034e0f1-834e-46a8-8f14-f7fd5.2e16d0ba.fill-534x400-c100.jpg

9034e0f1-834e-46a8-8f14-f7fd5.2e16d0ba.fill-534x400-c100.jpg

582 ms

20230601_020154673_iOS_-_Edit.2e16d0ba.fill-534x400-c100.jpg

20230601_020154673_iOS_-_Edit.2e16d0ba.fill-534x400-c100.jpg

581 ms

Regular_Hours_of_Operation.2e16d0ba.fill-1600x600-c100.png

Regular_Hours_of_Operation.2e16d0ba.fill-1600x600-c100.png

818 ms

Holidays_1.2e16d0ba.fill-1600x500-c100.png

Holidays_1.2e16d0ba.fill-1600x500-c100.png

770 ms

Holidays_2.2e16d0ba.fill-1600x500-c100.png

Holidays_2.2e16d0ba.fill-1600x500-c100.png

848 ms

DSC_0130.2e16d0ba.fill-520x150-c100.jpg

DSC_0130.2e16d0ba.fill-520x150-c100.jpg

666 ms

Insta_Updated_Button.2e16d0ba.fill-520x150-c100.png

Insta_Updated_Button.2e16d0ba.fill-520x150-c100.png

662 ms

facebook_button.2e16d0ba.fill-520x150-c100.png

facebook_button.2e16d0ba.fill-520x150-c100.png

759 ms

open-iconic.woff

open-iconic.woff

128 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

199 ms

Accessibility Review

dining.caltech.edu accessibility score

83

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 input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

High

ARIA IDs are not unique

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

dining.caltech.edu best practices score

67

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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

dining.caltech.edu SEO score

92

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

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 Dining.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 Dining.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.

Social Sharing Optimization

dining.caltech.edu

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