Tools & Wizards About Us

Report Summary

  • 44

    Performance

    Renders faster than
    63% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 42% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

c64online.com

C64 Online - Play classic C64 games online! - c64online.com

Page Load Speed

1.8 sec in total

First Response

121 ms

Resources Loaded

1.3 sec

Page Rendered

378 ms

About Website

Welcome to c64online.com homepage info - get ready to check C64 Online best content right away, or after learning these important things about c64online.com

Play 7000+ classic C64 games online for free on C64online.com! Online emulation of retro games for Commodore 64 and more.

Visit c64online.com

Key Findings

We analyzed C64online.com page load time and found that the first response time was 121 ms and then it took 1.7 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

c64online.com performance score

44

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

67/100

10%

LCP (Largest Contentful Paint)

Value3.0 s

78/100

25%

SI (Speed Index)

Value5.3 s

57/100

10%

TBT (Total Blocking Time)

Value2,750 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value0.207

60/100

15%

TTI (Time to Interactive)

Value11.0 s

21/100

10%

Network Requests Diagram

c64online.com

121 ms

c64online.com

579 ms

css

42 ms

style.min.css

14 ms

a-z-listing-default.css

33 ms

Our browser made a total of 44 requests to load all elements on the main page. We found that 61% of them (27 requests) were addressed to the original C64online.com, 27% (12 requests) were made to Fonts.gstatic.com and 5% (2 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (579 ms) belongs to the original domain C64online.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 76.3 kB (13%)

Content Size

573.6 kB

After Optimization

497.3 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of C64online.com main page is 573.6 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. 55% of websites need less resources to load. Javascripts take 346.7 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 73.1 kB

  • Original 91.8 kB
  • After minification 89.1 kB
  • After compression 18.7 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 73.1 kB or 80% of the original size.

Image Optimization

-0%

Potential reduce by 298 B

  • Original 64.8 kB
  • After minification 64.5 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. C64 Online images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 2.0 kB

  • Original 346.7 kB
  • After minification 346.7 kB
  • After compression 344.8 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 947 B

  • Original 70.2 kB
  • After minification 70.0 kB
  • After compression 69.2 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. C64online.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 23 (77%)

Requests Now

30

After Optimization

7

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 30 CSS, Javascripts, AJAX and image requests in order to completely render the main page of C64 Online. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 13 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

c64online.com accessibility score

76

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

[aria-*] attributes do not match their roles

High

ARIA IDs are not unique

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

High

Form elements do not have associated labels

Best Practices

c64online.com best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

c64online.com SEO score

91

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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise C64online.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 C64online.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

Open Graph data is detected on the main page of C64 Online. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: