Tools & Wizards About Us
colorado.edu screenshot

Report Summary

  • 25

    Performance

    Renders faster than
    44% of other websites

  • 90

    Accessibility

    Visual factors better than
    that of 75% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

colorado.edu

Home | University of Colorado Boulder

Page Load Speed

31.6 sec in total

First Response

386 ms

Resources Loaded

22.7 sec

Page Rendered

8.5 sec

colorado.edu screenshot

About Website

Click here to check amazing Colorado content for United States. Otherwise, check out these important facts you probably never knew about colorado.edu

The University of Colorado Boulder is a bold, innovative community of scholars and learners who accelerate human potential to solve the humanitarian, social and technological challenges of our time. C...

Visit colorado.edu

Key Findings

We analyzed Colorado.edu page load time and found that the first response time was 386 ms and then it took 31.2 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.

Performance Metrics

colorado.edu performance score

25

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

36/100

10%

LCP (Largest Contentful Paint)

Value5.7 s

17/100

25%

SI (Speed Index)

Value6.3 s

41/100

10%

TBT (Total Blocking Time)

Value3,360 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0.13

81/100

15%

TTI (Time to Interactive)

Value20.0 s

2/100

10%

Network Requests Diagram

www.colorado.edu

386 ms

86696b99-fb1a-4964-9676-9233fb4fca8f.css

200 ms

css_xE-rWrJf-fncB6ztZfd2huxqgxu4WO-qwma6Xer30m4.css

281 ms

css_uownO8HrTU9ZBLynNx4XqxeR-EZsBqW_aZ4mKyTxRtU.css

281 ms

css_Lw_49YnDbsmr8Y5VyApiPrfRP1CgmzZp0ktHKTy2ybs.css

381 ms

Our browser made a total of 61 requests to load all elements on the main page. We found that 56% of them (34 requests) were addressed to the original Colorado.edu, 11% (7 requests) were made to Fast.fonts.net and 5% (3 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (7.3 sec) relates to the external source 4496471.fls.doubleclick.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.5 MB (28%)

Content Size

5.4 MB

After Optimization

3.9 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Colorado.edu main page is 5.4 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. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 3.8 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 51.4 kB

  • Original 65.5 kB
  • After minification 62.6 kB
  • After compression 14.1 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 51.4 kB or 78% of the original size.

Image Optimization

-5%

Potential reduce by 188.5 kB

  • Original 3.8 MB
  • After minification 3.6 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. Colorado images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 459.5 kB

  • Original 659.3 kB
  • After minification 557.3 kB
  • After compression 199.8 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 459.5 kB or 70% of the original size.

CSS Optimization

-86%

Potential reduce by 828.4 kB

  • Original 968.3 kB
  • After minification 902.5 kB
  • After compression 139.9 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. Colorado.edu needs all CSS files to be minified and compressed as it can save up to 828.4 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 31 (60%)

Requests Now

52

After Optimization

21

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 52 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Colorado. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 19 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.colorado.edu

www.colorado.edu

386 ms

86696b99-fb1a-4964-9676-9233fb4fca8f.css

86696b99-fb1a-4964-9676-9233fb4fca8f.css

200 ms

css_xE-rWrJf-fncB6ztZfd2huxqgxu4WO-qwma6Xer30m4.css

css_xE-rWrJf-fncB6ztZfd2huxqgxu4WO-qwma6Xer30m4.css

281 ms

css_uownO8HrTU9ZBLynNx4XqxeR-EZsBqW_aZ4mKyTxRtU.css

css_uownO8HrTU9ZBLynNx4XqxeR-EZsBqW_aZ4mKyTxRtU.css

281 ms

css_Lw_49YnDbsmr8Y5VyApiPrfRP1CgmzZp0ktHKTy2ybs.css

css_Lw_49YnDbsmr8Y5VyApiPrfRP1CgmzZp0ktHKTy2ybs.css

381 ms

css__vnji5BDCmN4Ty9I_7bzQd_jCQD3OckhuUxlD2z2NUM.css

css__vnji5BDCmN4Ty9I_7bzQd_jCQD3OckhuUxlD2z2NUM.css

381 ms

css_73SZDjCoePpGVtVU_HQ9BAX8Jmx6VNgS3jTHaDKi8Ho.css

css_73SZDjCoePpGVtVU_HQ9BAX8Jmx6VNgS3jTHaDKi8Ho.css

752 ms

css_mznEZtX7SiulfVYuhFhFP3qvYxGtjpvgXFM3RUQDyJA.css

css_mznEZtX7SiulfVYuhFhFP3qvYxGtjpvgXFM3RUQDyJA.css

753 ms

modernizr.min.js

modernizr.min.js

752 ms

js_ZDOaep6HA5A0eriyiN-YaNv7MHsjd-FIuFyilZ2o5cw.js

js_ZDOaep6HA5A0eriyiN-YaNv7MHsjd-FIuFyilZ2o5cw.js

2548 ms

js_Fl_g-v433yRExXuMVD9nc_pcGPopPBlbL7jq3s8008Y.js

js_Fl_g-v433yRExXuMVD9nc_pcGPopPBlbL7jq3s8008Y.js

2533 ms

js_qTXgFrL3ryfK6sJeH6TDXWsligCQQpXNsJoIXa9YKdY.js

js_qTXgFrL3ryfK6sJeH6TDXWsligCQQpXNsJoIXa9YKdY.js

2354 ms

js_Y4lQQbb0aMWoMdgBchDZJCIo2PKloGXYuf73AHTMRzQ.js

js_Y4lQQbb0aMWoMdgBchDZJCIo2PKloGXYuf73AHTMRzQ.js

2633 ms

js_fhJ3QvZ7_pFC-MghljJTehKu15NBRXr3FU3CNZeDamo.js

js_fhJ3QvZ7_pFC-MghljJTehKu15NBRXr3FU3CNZeDamo.js

2353 ms

js_ZwQnRAzIi-BBT6R1Cuod9wtjx8JtJVd01fTLn2QUNnM.js

js_ZwQnRAzIi-BBT6R1Cuod9wtjx8JtJVd01fTLn2QUNnM.js

2554 ms

js_D2jtlRIjWUo93w5K-PZGQ4Qt7GTw7J466EXgMi-nvTE.js

js_D2jtlRIjWUo93w5K-PZGQ4Qt7GTw7J466EXgMi-nvTE.js

2553 ms

ping

ping

4032 ms

js_LfD2r9yEvLQbF7CQemRanTvYiDSyJ-PM3RJpGT-25yQ.js

js_LfD2r9yEvLQbF7CQemRanTvYiDSyJ-PM3RJpGT-25yQ.js

2552 ms

js_1W3hkRVR8gYi3FBNQQVj_-dKpbpkfj3JPZWBDPmRNVc.js

js_1W3hkRVR8gYi3FBNQQVj_-dKpbpkfj3JPZWBDPmRNVc.js

2553 ms

css_MYE84Mr8lgNIZGvDxO9Y0vKH_DQvJJuckP9Ygp_pvYo.css

css_MYE84Mr8lgNIZGvDxO9Y0vKH_DQvJJuckP9Ygp_pvYo.css

765 ms

analytics.js

analytics.js

864 ms

logo.png

logo.png

867 ms

print-logo.png

print-logo.png

318 ms

beboulder-logo-2x.png

beboulder-logo-2x.png

317 ms

beboulder-logo-2x_0.png

beboulder-logo-2x_0.png

302 ms

pac12_frame_ar_glasses0.png

pac12_frame_ar_glasses0.png

3878 ms

rms_2013.cc069.jpg

rms_2013.cc069.jpg

301 ms

cubt_cat_archer_pc0074.jpg

cubt_cat_archer_pc0074.jpg

428 ms

voyager_copy.jpg

voyager_copy.jpg

425 ms

caterpillar.png

caterpillar.png

3857 ms

engineering_smead_announcement_0004pc.jpg

engineering_smead_announcement_0004pc.jpg

384 ms

collect

collect

305 ms

collect

collect

5580 ms

bcf54343-d033-41ee-bbd7-2b77df3fe7ba.woff

bcf54343-d033-41ee-bbd7-2b77df3fe7ba.woff

3349 ms

60be5c39-863e-40cb-9434-6ebafb62ab2b.woff

60be5c39-863e-40cb-9434-6ebafb62ab2b.woff

3351 ms

530dee22-e3c1-4e9f-bf62-c31d510d9656.woff

530dee22-e3c1-4e9f-bf62-c31d510d9656.woff

3350 ms

14ff6081-326d-4dae-b778-d7afa66166fc.woff

14ff6081-326d-4dae-b778-d7afa66166fc.woff

3350 ms

74649485-cd74-443e-9d54-331ccd448900.woff

74649485-cd74-443e-9d54-331ccd448900.woff

3350 ms

58310d61-40ac-4464-b817-30d9e9deb3bb.woff

58310d61-40ac-4464-b817-30d9e9deb3bb.woff

3349 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

5546 ms

socicon.svg

socicon.svg

5747 ms

socicon.woff

socicon.woff

5494 ms

collect

collect

5494 ms

activityi;src=4496471;type=bebou002;cat=cu-bo0;dc_lat=;dc_rdid=;tag_for_child_directed_treatment=;ord=1859988269861.7876

activityi;src=4496471;type=bebou002;cat=cu-bo0;dc_lat=;dc_rdid=;tag_for_child_directed_treatment=;ord=1859988269861.7876

7304 ms

fbevents.js

fbevents.js

5493 ms

uwt.js

uwt.js

6994 ms

circles.png

circles.png

2452 ms

nav-arrows.png

nav-arrows.png

2452 ms

bg_tab.png

bg_tab.png

4168 ms

hbjs

hbjs

1368 ms

pix.gif

pix.gif

2283 ms

1037280719652233

1037280719652233

377 ms

adsct

adsct

2052 ms

1162 ms

bounce

bounce

761 ms

bounce

bounce

731 ms

964 ms

652 ms

async_usersync.html

async_usersync.html

482 ms

tc.min.js

tc.min.js

527 ms

idr.js

idr.js

240 ms

Accessibility Review

colorado.edu accessibility score

90

Accessibility Issues

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

Best Practices

colorado.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

colorado.edu SEO score

86

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

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

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 Colorado.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 Colorado.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

colorado.edu

Open Graph data is detected on the main page of Colorado. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: