Tools & Wizards About Us
czs.org screenshot

Report Summary

  • 27

    Performance

    Renders faster than
    46% 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

  • 83

    SEO

    Google-friendlier than
    46% of websites

czs.org

Brookfield Zoo Chicago - Connect. Care. Conserve.

Page Load Speed

2.8 sec in total

First Response

73 ms

Resources Loaded

1.9 sec

Page Rendered

795 ms

czs.org screenshot

About Website

Click here to check amazing Czs content for United States. Otherwise, check out these important facts you probably never knew about czs.org

The mission of Brookfield Zoo Chicago is to inspire conservation leadership by connecting people with wildlife and nature.

Visit czs.org

Key Findings

We analyzed Czs.org page load time and found that the first response time was 73 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

czs.org performance score

27

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.6 s

13/100

10%

LCP (Largest Contentful Paint)

Value4.6 s

34/100

25%

SI (Speed Index)

Value8.6 s

17/100

10%

TBT (Total Blocking Time)

Value3,420 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0.008

100/100

15%

TTI (Time to Interactive)

Value22.9 s

1/100

10%

Network Requests Diagram

czs.org

73 ms

203 ms

GetResource.ashx

65 ms

msh8lst.js

111 ms

jquery-ui.min.css

64 ms

Our browser made a total of 109 requests to load all elements on the main page. We found that 2% of them (2 requests) were addressed to the original Czs.org, 56% (61 requests) were made to Brookfieldzoo.org and 8% (9 requests) were made to Cdnjs.cloudflare.com. The less responsive or slowest element that took the longest time to load (741 ms) relates to the external source Brookfieldzoo.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 200.8 kB (6%)

Content Size

3.5 MB

After Optimization

3.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Czs.org main page is 3.5 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 3.0 MB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 73.5 kB

  • Original 98.9 kB
  • After minification 94.0 kB
  • After compression 25.4 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 73.5 kB or 74% of the original size.

Image Optimization

-4%

Potential reduce by 116.0 kB

  • Original 3.0 MB
  • After minification 2.8 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. Czs images are well optimized though.

JavaScript Optimization

-3%

Potential reduce by 10.8 kB

  • Original 395.0 kB
  • After minification 395.0 kB
  • After compression 384.2 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. This website has mostly compressed JavaScripts.

CSS Optimization

-1%

Potential reduce by 410 B

  • Original 59.5 kB
  • After minification 59.3 kB
  • After compression 59.0 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. Czs.org has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 48 (62%)

Requests Now

77

After Optimization

29

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 77 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Czs. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 43 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

czs.org

czs.org

73 ms

203 ms

GetResource.ashx

GetResource.ashx

65 ms

msh8lst.js

msh8lst.js

111 ms

jquery-ui.min.css

jquery-ui.min.css

64 ms

style.css

style.css

90 ms

Flexisel.css

Flexisel.css

106 ms

jquery.min.js

jquery.min.js

53 ms

jquery-ui.min.js

jquery-ui.min.js

53 ms

CZSCommon.js

CZSCommon.js

141 ms

jquery.maskedinput.min.js

jquery.maskedinput.min.js

61 ms

jquery.nivo.slider.pack.min.js

jquery.nivo.slider.pack.min.js

54 ms

jquery.flexisel.min.js

jquery.flexisel.min.js

56 ms

html5shiv.min.js

html5shiv.min.js

77 ms

jquery.bxslider.min.js

jquery.bxslider.min.js

76 ms

mootools-core.min.js

mootools-core.min.js

77 ms

jquery.flexisel.js

jquery.flexisel.js

161 ms

js

js

77 ms

GetResource.ashx

GetResource.ashx

163 ms

GetResource.ashx

GetResource.ashx

165 ms

WebResource.axd

WebResource.axd

171 ms

GetResource.ashx

GetResource.ashx

245 ms

GetResource.ashx

GetResource.ashx

172 ms

GetResource.ashx

GetResource.ashx

172 ms

ChatSettings.ashx

ChatSettings.ashx

172 ms

GetResource.ashx

GetResource.ashx

243 ms

GetResource.ashx

GetResource.ashx

243 ms

GetResource.ashx

GetResource.ashx

254 ms

GetResource.ashx

GetResource.ashx

255 ms

GetResource.ashx

GetResource.ashx

255 ms

GetResource.ashx

GetResource.ashx

255 ms

ScriptResource.axd

ScriptResource.axd

256 ms

ScriptResource.axd

ScriptResource.axd

256 ms

ScriptResource.axd

ScriptResource.axd

324 ms

ScriptResource.axd

ScriptResource.axd

327 ms

ScriptResource.axd

ScriptResource.axd

327 ms

js

js

328 ms

gtm.js

gtm.js

86 ms

gtm.js

gtm.js

91 ms

analytics.js

analytics.js

175 ms

228 ms

logo.aspx

logo.aspx

164 ms

cart-icon.png

cart-icon.png

163 ms

search-icon.aspx

search-icon.aspx

226 ms

left-image.aspx

left-image.aspx

225 ms

bird.aspx

bird.aspx

225 ms

tiger.aspx

tiger.aspx

225 ms

homepage-social-square.aspx

homepage-social-square.aspx

224 ms

new-logo.aspx

new-logo.aspx

224 ms

ZooAquariums.aspx

ZooAquariums.aspx

239 ms

22RSC_ArbNet_BadgeLevels_Level2_BLACK.png.aspx

22RSC_ArbNet_BadgeLevels_Level2_BLACK.png.aspx

239 ms

js

js

136 ms

adelphic_universal_pixel.js

adelphic_universal_pixel.js

266 ms

fbevents.js

fbevents.js

134 ms

a4759cf7-0184-4ae7-a7cb-4e129417338f.png

a4759cf7-0184-4ae7-a7cb-4e129417338f.png

79 ms

collect

collect

158 ms

3c9fda33-d415-425e-aa85-1d17fbc6a57b.png

3c9fda33-d415-425e-aa85-1d17fbc6a57b.png

185 ms

46807721-5d8b-4736-ab64-15760b205d82.png

46807721-5d8b-4736-ab64-15760b205d82.png

160 ms

4599fbdc-60c9-4e70-a224-87adb9faf3d9.jpg

4599fbdc-60c9-4e70-a224-87adb9faf3d9.jpg

258 ms

f7cdf231-750b-41c0-ad92-9713c75d3427_720_720.png

f7cdf231-750b-41c0-ad92-9713c75d3427_720_720.png

483 ms

c8e5f25c-bbfa-461c-a9f0-850caa346650.png

c8e5f25c-bbfa-461c-a9f0-850caa346650.png

356 ms

cddc92b7-9955-48fe-9aea-db3c061a97eb.png

cddc92b7-9955-48fe-9aea-db3c061a97eb.png

180 ms

pixel

pixel

179 ms

desktop-header-bg2.aspx

desktop-header-bg2.aspx

177 ms

shopping-cart-icon.aspx

shopping-cart-icon.aspx

255 ms

search.png

search.png

255 ms

mobile-menu-icon.aspx

mobile-menu-icon.aspx

335 ms

jhWz44lDFEM

jhWz44lDFEM

348 ms

fcd01f8e-8f20-4549-be43-8bd498ebcb01_81_45.png

fcd01f8e-8f20-4549-be43-8bd498ebcb01_81_45.png

347 ms

bd6aadd8-58d5-4f7d-84d9-3c2c5f8d1744_77_37.png

bd6aadd8-58d5-4f7d-84d9-3c2c5f8d1744_77_37.png

347 ms

842ce2f7-1bcd-4ea5-9bb1-ed28c7fa670d_91_29.png

842ce2f7-1bcd-4ea5-9bb1-ed28c7fa670d_91_29.png

343 ms

d9231095-0713-40f5-8e81-d7746d47a981_90_52.png

d9231095-0713-40f5-8e81-d7746d47a981_90_52.png

464 ms

homepage-social-square.aspx

homepage-social-square.aspx

505 ms

collect

collect

252 ms

js

js

104 ms

iframe_api

iframe_api

181 ms

BrookfieldZoo_Footer3.aspx

BrookfieldZoo_Footer3.aspx

307 ms

tiger.aspx

tiger.aspx

741 ms

471d136e-67b3-4e6f-9999-9ed464918561.png

471d136e-67b3-4e6f-9999-9ed464918561.png

339 ms

pixel

pixel

80 ms

GetSupportEngineersOnlineCount

GetSupportEngineersOnlineCount

286 ms

d

d

102 ms

d

d

156 ms

d

d

215 ms

d

d

230 ms

d

d

230 ms

d

d

233 ms

27607381-97dc-49ee-a20f-2eaf8cfb52c2.png

27607381-97dc-49ee-a20f-2eaf8cfb52c2.png

267 ms

sn.ashx

sn.ashx

631 ms

e9ab5a3c-095e-4467-8c75-562ddeb7151d.png

e9ab5a3c-095e-4467-8c75-562ddeb7151d.png

187 ms

www-player.css

www-player.css

31 ms

www-embed-player.js

www-embed-player.js

85 ms

base.js

base.js

186 ms

www-widgetapi.js

www-widgetapi.js

111 ms

p.gif

p.gif

476 ms

b0fe97dc-e171-4945-826b-a46736ca98e3.png

b0fe97dc-e171-4945-826b-a46736ca98e3.png

495 ms

bg_button.png

bg_button.png

397 ms

homepage-social-square.aspx

homepage-social-square.aspx

392 ms

id

id

257 ms

ad_status.js

ad_status.js

237 ms

4FCBsbVWt5jZVKm36Bs_QtpgBkunTUSSklJnPgMburg.js

4FCBsbVWt5jZVKm36Bs_QtpgBkunTUSSklJnPgMburg.js

169 ms

embed.js

embed.js

80 ms

4599fbdc-60c9-4e70-a224-87adb9faf3d9.jpg

4599fbdc-60c9-4e70-a224-87adb9faf3d9.jpg

211 ms

c8e5f25c-bbfa-461c-a9f0-850caa346650.png

c8e5f25c-bbfa-461c-a9f0-850caa346650.png

213 ms

KFOmCnqEu92Fr1Mu4mxP.ttf

KFOmCnqEu92Fr1Mu4mxP.ttf

60 ms

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

63 ms

Create

Create

154 ms

sn.ashx

sn.ashx

144 ms

g.pixel

g.pixel

134 ms

Accessibility Review

czs.org accessibility score

83

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

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

czs.org 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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

czs.org SEO score

83

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

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

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 Czs.org 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 Czs.org 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

czs.org

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