Tools & Wizards About Us
subscriptions.zookal.com screenshot

Report Summary

  • 3

    Performance

    Renders faster than
    20% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 51% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 85

    SEO

    Google-friendlier than
    55% of websites

subscriptions.zookal.com

University & High School Online Study Tools - Zookal US

Page Load Speed

6 sec in total

First Response

405 ms

Resources Loaded

4.7 sec

Page Rendered

873 ms

subscriptions.zookal.com screenshot

About Website

Welcome to subscriptions.zookal.com homepage info - get ready to check Subscriptions Zookal best content for Australia right away, or after learning these important things about subscriptions.zookal.com

Zookal Study gives you 24/7 Homework Help from Expert Tutors, Homework Solutions, Textbook Answers, Flashcards, Videos & Test Prep. Try free for 7 days.

Visit subscriptions.zookal.com

Key Findings

We analyzed Subscriptions.zookal.com page load time and found that the first response time was 405 ms and then it took 5.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

subscriptions.zookal.com performance score

3

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.7 s

0/100

10%

LCP (Largest Contentful Paint)

Value15.8 s

0/100

25%

SI (Speed Index)

Value13.4 s

2/100

10%

TBT (Total Blocking Time)

Value4,110 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.478

18/100

15%

TTI (Time to Interactive)

Value42.4 s

0/100

10%

Network Requests Diagram

subscriptions.zookal.com

405 ms

subscriptions.zookal.com

800 ms

www.zookal.com

397 ms

www.zookal.com

869 ms

us

579 ms

Our browser made a total of 77 requests to load all elements on the main page. We found that 3% of them (2 requests) were addressed to the original Subscriptions.zookal.com, 58% (45 requests) were made to Assets.zookal-web.production.aws.zookal.com and 5% (4 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (1.7 sec) relates to the external source Assets.zookal-web.production.aws.zookal.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 145.2 kB (8%)

Content Size

1.8 MB

After Optimization

1.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Subscriptions.zookal.com main page is 1.8 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. Javascripts take 918.0 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 82.1 kB

  • Original 103.3 kB
  • After minification 103.3 kB
  • After compression 21.2 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 82.1 kB or 80% of the original size.

Image Optimization

-8%

Potential reduce by 62.3 kB

  • Original 740.6 kB
  • After minification 678.3 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. Subscriptions Zookal images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 660 B

  • Original 918.0 kB
  • After minification 918.0 kB
  • After compression 917.3 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

-19%

Potential reduce by 103 B

  • Original 539 B
  • After minification 539 B
  • After compression 436 B

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. Subscriptions.zookal.com needs all CSS files to be minified and compressed as it can save up to 103 B or 19% of the original size.

Requests Breakdown

Number of requests can be reduced by 41 (68%)

Requests Now

60

After Optimization

19

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 60 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Subscriptions Zookal. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 42 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

subscriptions.zookal.com

subscriptions.zookal.com

405 ms

subscriptions.zookal.com

subscriptions.zookal.com

800 ms

www.zookal.com

www.zookal.com

397 ms

www.zookal.com

www.zookal.com

869 ms

us

us

579 ms

index.css

index.css

75 ms

js

js

344 ms

chargebee.js

chargebee.js

82 ms

lock.min.js

lock.min.js

132 ms

es6-shim.js

es6-shim.js

130 ms

polyfills-5cd94c89d3acac5f.js

polyfills-5cd94c89d3acac5f.js

283 ms

webpack-a878a9cc7571f250.js

webpack-a878a9cc7571f250.js

76 ms

framework-78f1b1eb74345829.js

framework-78f1b1eb74345829.js

267 ms

main-87b64243df18716c.js

main-87b64243df18716c.js

76 ms

_app-4aebad6444ef6e36.js

_app-4aebad6444ef6e36.js

271 ms

7611df77-4bae972f45389206.js

7611df77-4bae972f45389206.js

80 ms

9691-6c50503b34e918dc.js

9691-6c50503b34e918dc.js

271 ms

9669-b5b7c1d39e477dc4.js

9669-b5b7c1d39e477dc4.js

129 ms

2071-0c21edb522167a52.js

2071-0c21edb522167a52.js

339 ms

3944-73379f34cfb435ac.js

3944-73379f34cfb435ac.js

340 ms

1464-64bdc660e4162289.js

1464-64bdc660e4162289.js

339 ms

7661-3edd1c7fae4388ed.js

7661-3edd1c7fae4388ed.js

340 ms

1249-60d1c61a9fb7dbc5.js

1249-60d1c61a9fb7dbc5.js

340 ms

7915-2eb85ca1b3a8116e.js

7915-2eb85ca1b3a8116e.js

341 ms

1128-a95fddab5806fd0a.js

1128-a95fddab5806fd0a.js

341 ms

6383-3c243f405a3a27c6.js

6383-3c243f405a3a27c6.js

343 ms

3763-0cb60904f8677c56.js

3763-0cb60904f8677c56.js

342 ms

7215-a3dbeafa96a5f0d3.js

7215-a3dbeafa96a5f0d3.js

343 ms

433-ad22a8e3e943c8a1.js

433-ad22a8e3e943c8a1.js

343 ms

us-dc6f0a3eb80d8f20.js

us-dc6f0a3eb80d8f20.js

344 ms

_buildManifest.js

_buildManifest.js

343 ms

_ssgManifest.js

_ssgManifest.js

345 ms

_middlewareManifest.js

_middlewareManifest.js

344 ms

gtm.js

gtm.js

288 ms

tex-mml-chtml.js

tex-mml-chtml.js

273 ms

201-156b52a7e4e2626c2fdf.js

201-156b52a7e4e2626c2fdf.js

240 ms

192-8ebc18c88b6cd0946fe5.js

192-8ebc18c88b6cd0946fe5.js

227 ms

zookal-logo.svg

zookal-logo.svg

523 ms

snap-pic-text-bg.svg

snap-pic-text-bg.svg

463 ms

hero-bg-l.jpg

hero-bg-l.jpg

1660 ms

free-trial-arrow.png

free-trial-arrow.png

67 ms

get-unstuck.svg

get-unstuck.svg

68 ms

practice-exams.svg

practice-exams.svg

80 ms

find-resources.svg

find-resources.svg

999 ms

create-flashcards.svg

create-flashcards.svg

99 ms

apple-store-download.png

apple-store-download.png

78 ms

google-play-download.png

google-play-download.png

97 ms

zookal-study-app.png

zookal-study-app.png

525 ms

facebook.svg

facebook.svg

518 ms

instagram.svg

instagram.svg

516 ms

youtube.svg

youtube.svg

521 ms

OpenSans-Regular.ttf

OpenSans-Regular.ttf

416 ms

OpenSans-Medium.ttf

OpenSans-Medium.ttf

414 ms

OpenSans-Light.ttf

OpenSans-Light.ttf

414 ms

OpenSans-SemiBold.ttf

OpenSans-SemiBold.ttf

417 ms

OpenSans-Bold.ttf

OpenSans-Bold.ttf

417 ms

OpenSans-ExtraBold.ttf

OpenSans-ExtraBold.ttf

1322 ms

ProximaNova-Bold.ttf

ProximaNova-Bold.ttf

1321 ms

ProximaNova-Semibold.ttf

ProximaNova-Semibold.ttf

444 ms

ProximaNova-Medium.ttf

ProximaNova-Medium.ttf

442 ms

ProximaNova-Regular.ttf

ProximaNova-Regular.ttf

709 ms

ProximaNova-Light.ttf

ProximaNova-Light.ttf

1322 ms

ProximaNova-Thin.ttf

ProximaNova-Thin.ttf

766 ms

js

js

178 ms

destination

destination

110 ms

hotjar-575883.js

hotjar-575883.js

450 ms

pixel.js

pixel.js

362 ms

fbevents.js

fbevents.js

363 ms

scevent.min.js

scevent.min.js

362 ms

events.js

events.js

915 ms

283 ms

rp.gif

rp.gif

65 ms

a2_doh0teo1vavz_telemetry

a2_doh0teo1vavz_telemetry

59 ms

949586938429175

949586938429175

58 ms

modules.a4fd7e5489291affcf56.js

modules.a4fd7e5489291affcf56.js

25 ms

45 ms

main.MTNhZGZiOTRkMQ.js

main.MTNhZGZiOTRkMQ.js

129 ms

Accessibility Review

subscriptions.zookal.com accessibility score

81

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

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

Best Practices

subscriptions.zookal.com 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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

subscriptions.zookal.com SEO score

85

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 Subscriptions.zookal.com 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 Subscriptions.zookal.com 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

subscriptions.zookal.com

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