Tools & Wizards About Us
dollyzoom.herokuapp.com screenshot

Report Summary

  • 51

    Performance

    Renders faster than
    69% of other websites

  • 50

    Accessibility

    Visual factors better than
    that of 20% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 73

    SEO

    Google-friendlier than
    31% of websites

dollyzoom.herokuapp.com

DollyZoom.js - Dollyzoom (Zolly) explained interactively.

Page Load Speed

2.2 sec in total

First Response

196 ms

Resources Loaded

1.9 sec

Page Rendered

104 ms

dollyzoom.herokuapp.com screenshot

About Website

Click here to check amazing Dolly Zoom Herokuapp content for United States. Otherwise, check out these important facts you probably never knew about dollyzoom.herokuapp.com

DollyZoom.js is an interactive, playful experiment and explanation of the dollyzoom cinematic effect.

Visit dollyzoom.herokuapp.com

Key Findings

We analyzed Dollyzoom.herokuapp.com page load time and found that the first response time was 196 ms and then it took 2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

dollyzoom.herokuapp.com performance score

51

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.9 s

86/100

10%

LCP (Largest Contentful Paint)

Value8.5 s

2/100

25%

SI (Speed Index)

Value3.5 s

88/100

10%

TBT (Total Blocking Time)

Value620 ms

48/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value8.2 s

40/100

10%

Network Requests Diagram

dollyzoom.herokuapp.com

196 ms

style.css

88 ms

css

22 ms

require.js

419 ms

analytics.js

24 ms

Our browser made a total of 13 requests to load all elements on the main page. We found that 69% of them (9 requests) were addressed to the original Dollyzoom.herokuapp.com, 15% (2 requests) were made to Google-analytics.com and 8% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Dollyzoom.herokuapp.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 120.7 kB (25%)

Content Size

475.0 kB

After Optimization

354.3 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Dollyzoom.herokuapp.com main page is 475.0 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. 15% of websites need less resources to load. Images take 322.7 kB which makes up the majority of the site volume.

HTML Optimization

-70%

Potential reduce by 11.8 kB

  • Original 16.8 kB
  • After minification 13.7 kB
  • After compression 5.0 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. This page needs HTML code to be minified as it can gain 3.0 kB, which is 18% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 11.8 kB or 70% of the original size.

Image Optimization

-1%

Potential reduce by 1.8 kB

  • Original 322.7 kB
  • After minification 320.8 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. Dolly Zoom Herokuapp images are well optimized though.

JavaScript Optimization

-79%

Potential reduce by 107.1 kB

  • Original 135.6 kB
  • After minification 77.8 kB
  • After compression 28.5 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 107.1 kB or 79% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

12

After Optimization

12

  • Images
  • JavaScript
  • CSS

The browser has sent 12 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dolly Zoom Herokuapp. According to our analytics all requests are already optimized.

Network Requests Diagram

dollyzoom.herokuapp.com

dollyzoom.herokuapp.com

196 ms

style.css

style.css

88 ms

css

css

22 ms

require.js

require.js

419 ms

analytics.js

analytics.js

24 ms

dof_logo_5_negative.png

dof_logo_5_negative.png

94 ms

thumb_scenario_1.png

thumb_scenario_1.png

178 ms

thumb_scenario_2.png

thumb_scenario_2.png

337 ms

splash_screen_1.png

splash_screen_1.png

600 ms

dof_logo_5.png

dof_logo_5.png

171 ms

main_EN.js

main_EN.js

1220 ms

88x31.png

88x31.png

33 ms

collect

collect

17 ms

Accessibility Review

dollyzoom.herokuapp.com accessibility score

50

Accessibility Issues

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

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

dollyzoom.herokuapp.com best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

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

dollyzoom.herokuapp.com SEO score

73

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 doesn't use legible font sizes

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 Dollyzoom.herokuapp.com 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 Dollyzoom.herokuapp.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

dollyzoom.herokuapp.com

Open Graph description is not detected on the main page of Dolly Zoom Herokuapp. 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: