Tools & Wizards About Us
teacherscollege.edu screenshot

Report Summary

  • 11

    Performance

    Renders faster than
    24% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 80% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

teacherscollege.edu

Teachers College - Columbia University

Page Load Speed

2.3 sec in total

First Response

116 ms

Resources Loaded

968 ms

Page Rendered

1.2 sec

teacherscollege.edu screenshot

About Website

Visit teacherscollege.edu now to see the best up-to-date Teachers College content and also check out these interesting facts you probably never knew about teacherscollege.edu

Teachers College, Columbia University, is the first and largest graduate school of education in the United States, and also perennially ranked among the nation's best.

Visit teacherscollege.edu

Key Findings

We analyzed Teacherscollege.edu page load time and found that the first response time was 116 ms and then it took 2.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

teacherscollege.edu performance score

11

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.0 s

49/100

10%

LCP (Largest Contentful Paint)

Value14.1 s

0/100

25%

SI (Speed Index)

Value6.8 s

35/100

10%

TBT (Total Blocking Time)

Value2,930 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value0.739

6/100

15%

TTI (Time to Interactive)

Value16.1 s

6/100

10%

Network Requests Diagram

teacherscollege.edu

116 ms

www.tc.columbia.edu

41 ms

gtm.js

234 ms

ping

372 ms

styles.css

28 ms

Our browser made a total of 60 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Teacherscollege.edu, 82% (49 requests) were made to Tc.columbia.edu and 7% (4 requests) were made to T4.tc.columbia.edu. The less responsive or slowest element that took the longest time to load (372 ms) relates to the external source Apply.tc.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 720.6 kB (6%)

Content Size

12.2 MB

After Optimization

11.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Teacherscollege.edu main page is 12.2 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. Only a small number of websites need less resources to load. Images take 11.4 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 126.4 kB

  • Original 148.8 kB
  • After minification 135.7 kB
  • After compression 22.4 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 126.4 kB or 85% of the original size.

Image Optimization

-2%

Potential reduce by 204.2 kB

  • Original 11.4 MB
  • After minification 11.2 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. Teachers College images are well optimized though.

JavaScript Optimization

-67%

Potential reduce by 389.7 kB

  • Original 583.0 kB
  • After minification 583.0 kB
  • After compression 193.2 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 389.7 kB or 67% of the original size.

CSS Optimization

-0%

Potential reduce by 193 B

  • Original 85.0 kB
  • After minification 85.0 kB
  • After compression 84.8 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. Teacherscollege.edu has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 3 (6%)

Requests Now

49

After Optimization

46

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 49 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Teachers College. 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.

Network Requests Diagram

teacherscollege.edu

teacherscollege.edu

116 ms

www.tc.columbia.edu

www.tc.columbia.edu

41 ms

gtm.js

gtm.js

234 ms

ping

ping

372 ms

styles.css

styles.css

28 ms

bundle.js

bundle.js

67 ms

2.6.14.min.js

2.6.14.min.js

65 ms

Primary-Logo_Left-Aligned_White@2x.png

Primary-Logo_Left-Aligned_White@2x.png

292 ms

precollege-hero.jpeg

precollege-hero.jpeg

309 ms

tc-businesses-hero.jpg

tc-businesses-hero.jpg

304 ms

CDC-sonali-rajan-hero.jpg

CDC-sonali-rajan-hero.jpg

311 ms

ONeill-Fellow-hero-1115.jpg

ONeill-Fellow-hero-1115.jpg

308 ms

AppOpen_WebsiteHeader_24_v1_lg.jpg

AppOpen_WebsiteHeader_24_v1_lg.jpg

320 ms

tc_number_1_png_820x280.png

tc_number_1_png_820x280.png

316 ms

Public_Good_Iniative_Logo.png

Public_Good_Iniative_Logo.png

318 ms

Diversity_At_TC_Image_1200x800.jpg

Diversity_At_TC_Image_1200x800.jpg

319 ms

TC_ACT_Header_1200x800_v1.jpg

TC_ACT_Header_1200x800_v1.jpg

319 ms

Extended_Neighborhood_Image_1200x800.jpg

Extended_Neighborhood_Image_1200x800.jpg

340 ms

Visit_Campus_Image_1200x800.jpg

Visit_Campus_Image_1200x800.jpg

339 ms

Primary-Logo_1-Line-Centered_White@2x.png

Primary-Logo_1-Line-Centered_White@2x.png

339 ms

social-feed-v2.php

social-feed-v2.php

307 ms

Education_Image_1200x800.jpg

Education_Image_1200x800.jpg

240 ms

Health_Image_1200x800.jpg

Health_Image_1200x800.jpg

235 ms

Psychology_Image_1200x800.jpg

Psychology_Image_1200x800.jpg

236 ms

View_All_Image_1200x800.jpg

View_All_Image_1200x800.jpg

244 ms

edweek.png

edweek.png

242 ms

Public_Good_Site_Image_lg.jpeg

Public_Good_Site_Image_lg.jpeg

245 ms

New_Brand_Site_Hero_final.jpg

New_Brand_Site_Hero_final.jpg

246 ms

blue-bokeh.jpeg

blue-bokeh.jpeg

241 ms

Blue_Textured_Bckgrnd.jpg

Blue_Textured_Bckgrnd.jpg

247 ms

42cddacb4afefffc2eac0796c97d2138.woff

42cddacb4afefffc2eac0796c97d2138.woff

252 ms

21d90222c523c6c3cdb750c72ea34b0a.woff

21d90222c523c6c3cdb750c72ea34b0a.woff

300 ms

events-v2.php

events-v2.php

205 ms

articles-v2.php

articles-v2.php

205 ms

articles-v2.php

articles-v2.php

126 ms

c5cd7f5300576ab4c88202b42f6ded62.gif

c5cd7f5300576ab4c88202b42f6ded62.gif

74 ms

resized-Admission-Home-6-lg.jpg

resized-Admission-Home-6-lg.jpg

76 ms

resized-Admission-2-lg.jpg

resized-Admission-2-lg.jpg

75 ms

resized-Admission-19-4-lg.jpg

resized-Admission-19-4-lg.jpg

77 ms

resized-TC-main-4-lg.jpg

resized-TC-main-4-lg.jpg

96 ms

students-in-faculty-office.jpg

students-in-faculty-office.jpg

97 ms

fee66e712a8a08eef5805a46892932ad.woff

fee66e712a8a08eef5805a46892932ad.woff

114 ms

896a02d1cec991d6c29721d9c9851f7f.woff

896a02d1cec991d6c29721d9c9851f7f.woff

115 ms

86626798fd8e2bd87e79cc753ee045aa.woff

86626798fd8e2bd87e79cc753ee045aa.woff

116 ms

8d171be274421df007dce4799c6c7c25.woff

8d171be274421df007dce4799c6c7c25.woff

115 ms

8a77dbb5bf41aef27270bc411fc6540e.woff

8a77dbb5bf41aef27270bc411fc6540e.woff

116 ms

9873c345f4c858ddea36836c5b23b981.woff

9873c345f4c858ddea36836c5b23b981.woff

116 ms

b7c9e1e479de3b53f1e4e30ebac2403a.woff

b7c9e1e479de3b53f1e4e30ebac2403a.woff

156 ms

361112818.jpg

361112818.jpg

160 ms

360958746.jpg

360958746.jpg

150 ms

360856090.jpg

360856090.jpg

146 ms

360753559.jpg

360753559.jpg

294 ms

iStock-1421472348.jpg

iStock-1421472348.jpg

34 ms

Winter-Session-Hero.jpg

Winter-Session-Hero.jpg

24 ms

Mike-Ugenyi-Hero.jpg

Mike-Ugenyi-Hero.jpg

20 ms

meme-culture-hero-1200x800.jpg

meme-culture-hero-1200x800.jpg

33 ms

edtech-2024-leaders.JPG

edtech-2024-leaders.JPG

25 ms

SOTC24-hero.jpg

SOTC24-hero.jpg

25 ms

iStock-1469940271_md.jpeg

iStock-1469940271_md.jpeg

26 ms

tc_alumni_day_24_gilbert_316.JPG

tc_alumni_day_24_gilbert_316.JPG

30 ms

Accessibility Review

teacherscollege.edu accessibility score

93

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

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>).

Best Practices

teacherscollege.edu best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

teacherscollege.edu SEO score

93

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

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 Teacherscollege.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 Teacherscollege.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

teacherscollege.edu

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