Tools & Wizards About Us
transportation.columbia.edu screenshot

Report Summary

  • 19

    Performance

    Renders faster than
    36% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 89% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 84

    SEO

    Google-friendlier than
    53% of websites

transportation.columbia.edu

Columbia Transportation

Page Load Speed

791 ms in total

First Response

102 ms

Resources Loaded

461 ms

Page Rendered

228 ms

transportation.columbia.edu screenshot

About Website

Visit transportation.columbia.edu now to see the best up-to-date Transportation Columbia content for United States and also check out these interesting facts you probably never knew about transportation.columbia.edu

Visit transportation.columbia.edu

Key Findings

We analyzed Transportation.columbia.edu page load time and found that the first response time was 102 ms and then it took 689 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.

Performance Metrics

transportation.columbia.edu performance score

19

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

29/100

10%

LCP (Largest Contentful Paint)

Value5.1 s

24/100

25%

SI (Speed Index)

Value8.8 s

16/100

10%

TBT (Total Blocking Time)

Value1,520 ms

13/100

30%

CLS (Cumulative Layout Shift)

Value0.355

31/100

15%

TTI (Time to Interactive)

Value18.4 s

3/100

10%

Network Requests Diagram

transportation.columbia.edu

102 ms

css

23 ms

css_9369725e8c6e0a4355fe76bd5149766e.css

40 ms

js_a8d259da8814ebd67995c746ae7c5347.js

57 ms

ga.js

175 ms

Our browser made a total of 33 requests to load all elements on the main page. We found that 88% of them (29 requests) were addressed to the original Transportation.columbia.edu, 6% (2 requests) were made to Google-analytics.com and 3% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (175 ms) relates to the external source Google-analytics.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 280.7 kB (38%)

Content Size

737.7 kB

After Optimization

457.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Transportation.columbia.edu main page is 737.7 kB. 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 440.5 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 26.5 kB

  • Original 33.1 kB
  • After minification 30.7 kB
  • After compression 6.6 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 26.5 kB or 80% of the original size.

Image Optimization

-13%

Potential reduce by 59.2 kB

  • Original 440.5 kB
  • After minification 381.3 kB

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. Obviously, Transportation Columbia needs image optimization as it can save up to 59.2 kB or 13% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-68%

Potential reduce by 108.8 kB

  • Original 160.0 kB
  • After minification 135.5 kB
  • After compression 51.2 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 108.8 kB or 68% of the original size.

CSS Optimization

-83%

Potential reduce by 86.1 kB

  • Original 104.1 kB
  • After minification 102.3 kB
  • After compression 18.0 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. Transportation.columbia.edu needs all CSS files to be minified and compressed as it can save up to 86.1 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (35%)

Requests Now

31

After Optimization

20

  • Images
  • JavaScript
  • CSS

The browser has sent 31 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Transportation Columbia. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Network Requests Diagram

transportation.columbia.edu

transportation.columbia.edu

102 ms

css

css

23 ms

css_9369725e8c6e0a4355fe76bd5149766e.css

css_9369725e8c6e0a4355fe76bd5149766e.css

40 ms

js_a8d259da8814ebd67995c746ae7c5347.js

js_a8d259da8814ebd67995c746ae7c5347.js

57 ms

ga.js

ga.js

175 ms

logo.png

logo.png

38 ms

go.png

go.png

37 ms

shuttle_0.jpg

shuttle_0.jpg

44 ms

istock_000019325721_small.jpg

istock_000019325721_small.jpg

43 ms

carpool.jpg

carpool.jpg

44 ms

bluedots.png

bluedots.png

40 ms

h1bg1.png

h1bg1.png

38 ms

transportation-icons_v2_walk_0.png

transportation-icons_v2_walk_0.png

40 ms

transportation-icons_v2_bus.png

transportation-icons_v2_bus.png

45 ms

transportation-icons_v2_train_0.png

transportation-icons_v2_train_0.png

61 ms

transportation-icons_v2_bike_0.png

transportation-icons_v2_bike_0.png

52 ms

transportation-icons_v2_car_0.png

transportation-icons_v2_car_0.png

51 ms

shuttle_screenshot_with_bubbles3.jpg

shuttle_screenshot_with_bubbles3.jpg

65 ms

foto_20.03.14_08_39_56.jpg

foto_20.03.14_08_39_56.jpg

82 ms

dotted_block.png

dotted_block.png

61 ms

arrow-bullet.png

arrow-bullet.png

62 ms

arrow-bullet.png

arrow-bullet.png

64 ms

app.png

app.png

70 ms

textminus.png

textminus.png

67 ms

textplus.png

textplus.png

68 ms

mini-crown2.gif

mini-crown2.gif

77 ms

arw5.png

arw5.png

72 ms

arw1.png

arw1.png

80 ms

extlink.png

extlink.png

81 ms

mailto.png

mailto.png

82 ms

BfQP1MR3mJNaumtWa4Tizg.ttf

BfQP1MR3mJNaumtWa4Tizg.ttf

38 ms

__utm.gif

__utm.gif

32 ms

css_58fda3690f152980848e69c7484d95ac.css

css_58fda3690f152980848e69c7484d95ac.css

15 ms

Accessibility Review

transportation.columbia.edu accessibility score

96

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

button, link, and menuitem elements do not have accessible names.

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

Best Practices

transportation.columbia.edu best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Requests the geolocation permission on page load

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

transportation.columbia.edu SEO score

84

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

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

    CU

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Transportation.columbia.edu can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it does not match the claimed language. Our system also found out that Transportation.columbia.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

transportation.columbia.edu

Open Graph description is not detected on the main page of Transportation Columbia. 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: