Tools & Wizards About Us
guide.cred.columbia.edu screenshot

Report Summary

  • 68

    Performance

    Renders faster than
    80% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 42% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

guide.cred.columbia.edu

CRED Guide | The Psychology of Climate Change Communication

Page Load Speed

1.5 sec in total

First Response

303 ms

Resources Loaded

942 ms

Page Rendered

205 ms

guide.cred.columbia.edu screenshot

About Website

Welcome to guide.cred.columbia.edu homepage info - get ready to check Guide CRED Columbia best content for United States right away, or after learning these important things about guide.cred.columbia.edu

The CRED Guide — The Psychology of Climate Change Communication: A Guide for Scientists, Journalists, Educators, Political Aides, and the Interested Public. By the Center for Research on Environmental...

Visit guide.cred.columbia.edu

Key Findings

We analyzed Guide.cred.columbia.edu page load time and found that the first response time was 303 ms and then it took 1.1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Performance Metrics

guide.cred.columbia.edu performance score

68

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value0.8 s

100/100

10%

LCP (Largest Contentful Paint)

Value2.2 s

95/100

25%

SI (Speed Index)

Value2.4 s

98/100

10%

TBT (Total Blocking Time)

Value1,070 ms

24/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value10.3 s

24/100

10%

Network Requests Diagram

guide.cred.columbia.edu

303 ms

cred_styles.css

11 ms

urchin.js

4 ms

embeddedform

59 ms

__utm.gif

7 ms

Our browser made a total of 60 requests to load all elements on the main page. We found that 78% of them (47 requests) were addressed to the original Guide.cred.columbia.edu, 7% (4 requests) were made to Docs.google.com and 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (303 ms) belongs to the original domain Guide.cred.columbia.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 70.6 kB (40%)

Content Size

176.0 kB

After Optimization

105.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Guide.cred.columbia.edu main page is 176.0 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. 20% of websites need less resources to load. Images take 83.3 kB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 9.2 kB

  • Original 12.8 kB
  • After minification 11.7 kB
  • After compression 3.6 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 9.2 kB or 72% of the original size.

Image Optimization

-0%

Potential reduce by 235 B

  • Original 83.3 kB
  • After minification 83.1 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. Guide CRED Columbia images are well optimized though.

JavaScript Optimization

-14%

Potential reduce by 971 B

  • Original 6.8 kB
  • After minification 6.8 kB
  • After compression 5.9 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 971 B or 14% of the original size.

CSS Optimization

-82%

Potential reduce by 60.2 kB

  • Original 73.0 kB
  • After minification 70.8 kB
  • After compression 12.8 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. Guide.cred.columbia.edu needs all CSS files to be minified and compressed as it can save up to 60.2 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 20 (37%)

Requests Now

54

After Optimization

34

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 54 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Guide CRED 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

guide.cred.columbia.edu

guide.cred.columbia.edu

303 ms

cred_styles.css

cred_styles.css

11 ms

urchin.js

urchin.js

4 ms

embeddedform

embeddedform

59 ms

__utm.gif

__utm.gif

7 ms

header1.gif

header1.gif

10 ms

head_title.gif

head_title.gif

25 ms

top_guide2.gif

top_guide2.gif

21 ms

top_home_Y2.gif

top_home_Y2.gif

22 ms

top_downloads.gif

top_downloads.gif

23 ms

top_learn.gif

top_learn.gif

23 ms

top_press.gif

top_press.gif

24 ms

top_talk.gif

top_talk.gif

29 ms

top_about.gif

top_about.gif

31 ms

left_contents.gif

left_contents.gif

31 ms

left_intro-1.gif

left_intro-1.gif

32 ms

left_1-1.gif

left_1-1.gif

33 ms

left_2-1.gif

left_2-1.gif

31 ms

left_3-1.gif

left_3-1.gif

37 ms

left_4-1.gif

left_4-1.gif

39 ms

left_5-1.gif

left_5-1.gif

40 ms

left_6-1.gif

left_6-1.gif

41 ms

left_7-1.gif

left_7-1.gif

40 ms

left_8-1.gif

left_8-1.gif

41 ms

left_con-1.gif

left_con-1.gif

46 ms

left_brief-1.gif

left_brief-1.gif

48 ms

left_download-1.gif

left_download-1.gif

49 ms

left_request-1.gif

left_request-1.gif

48 ms

CRED_book_cropped_sm.jpg

CRED_book_cropped_sm.jpg

77 ms

pdficon_large.gif

pdficon_large.gif

50 ms

get_adobe_reader.gif

get_adobe_reader.gif

60 ms

embeddedform

embeddedform

147 ms

viewform

viewform

161 ms

viewform

viewform

131 ms

css

css

30 ms

365277216-formview_embedded_st_ltr.css

365277216-formview_embedded_st_ltr.css

9 ms

972808929-formviewer_prd.js

972808929-formviewer_prd.js

11 ms

blue-stripe-bg.png

blue-stripe-bg.png

40 ms

forms_logo_2_small_dark.png

forms_logo_2_small_dark.png

24 ms

zN7GBFwfMP4uA6AR0HCoLQ.ttf

zN7GBFwfMP4uA6AR0HCoLQ.ttf

22 ms

d-6IYplOFocCacKzxwXSOKCWcynf_cDxXwCLxiixG1c.ttf

d-6IYplOFocCacKzxwXSOKCWcynf_cDxXwCLxiixG1c.ttf

23 ms

top_home_Y.gif

top_home_Y.gif

10 ms

top_downloads_Y.gif

top_downloads_Y.gif

10 ms

top_learn_Y.gif

top_learn_Y.gif

10 ms

top_press_Y.gif

top_press_Y.gif

10 ms

top_talk_Y.gif

top_talk_Y.gif

10 ms

top_about_Y.gif

top_about_Y.gif

11 ms

left_intro-2.gif

left_intro-2.gif

15 ms

left_1-2.gif

left_1-2.gif

18 ms

left_2-2.gif

left_2-2.gif

19 ms

left_3-2.gif

left_3-2.gif

19 ms

left_4-2.gif

left_4-2.gif

19 ms

left_5-2.gif

left_5-2.gif

20 ms

left_6-2.gif

left_6-2.gif

24 ms

left_7-2.gif

left_7-2.gif

27 ms

left_8-2.gif

left_8-2.gif

28 ms

left_con-2.gif

left_con-2.gif

28 ms

left_brief-2.gif

left_brief-2.gif

28 ms

left_download-2.gif

left_download-2.gif

29 ms

left_request-2.gif

left_request-2.gif

32 ms

Accessibility Review

guide.cred.columbia.edu accessibility score

76

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.

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

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best Practices

guide.cred.columbia.edu best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

guide.cred.columbia.edu SEO score

67

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Guide.cred.columbia.edu can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Guide.cred.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

guide.cred.columbia.edu

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