Tools & Wizards About Us
zxspectrum4.net screenshot

Report Summary

  • 72

    Performance

    Renders faster than
    82% of other websites

  • 71

    Accessibility

    Visual factors better than
    that of 36% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 58

    SEO

    Google-friendlier than
    21% of websites

zxspectrum4.net

ZX Spectrum Emulator for Windows 10, Windows 8, Windows 7, Vista, XP, with over 3000 Games and Growing

Page Load Speed

3.7 sec in total

First Response

1 sec

Resources Loaded

2.3 sec

Page Rendered

353 ms

zxspectrum4.net screenshot

About Website

Visit zxspectrum4.net now to see the best up-to-date ZX Spectrum 4 content for United States and also check out these interesting facts you probably never knew about zxspectrum4.net

The ZX Spectrum emulator for Microsoft® Windows® - 9/10! Reviewed in the Micro-Mart. Access over 3000 games online! All Sincalir models are emulated, 16k, 48k, 128k,+2, and +3. Free download. Help us ...

Visit zxspectrum4.net

Key Findings

We analyzed Zxspectrum4.net page load time and found that the first response time was 1 sec 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

zxspectrum4.net performance score

72

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.6 s

63/100

10%

LCP (Largest Contentful Paint)

Value5.8 s

15/100

25%

SI (Speed Index)

Value4.2 s

78/100

10%

TBT (Total Blocking Time)

Value40 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value4.0 s

87/100

10%

Network Requests Diagram

zxspectrum4.net

1004 ms

zxspectrum4.net

473 ms

style.css

155 ms

layout.css

233 ms

css

33 ms

Our browser made a total of 37 requests to load all elements on the main page. We found that 81% of them (30 requests) were addressed to the original Zxspectrum4.net, 11% (4 requests) were made to Platform.twitter.com and 5% (2 requests) were made to Syndication.twitter.com. The less responsive or slowest element that took the longest time to load (1 sec) belongs to the original domain Zxspectrum4.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 586.3 kB (65%)

Content Size

906.7 kB

After Optimization

320.4 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Zxspectrum4.net main page is 906.7 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. 35% of websites need less resources to load. Images take 586.7 kB which makes up the majority of the site volume.

HTML Optimization

-91%

Potential reduce by 289.3 kB

  • Original 318.5 kB
  • After minification 316.3 kB
  • After compression 29.2 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 289.3 kB or 91% of the original size.

Image Optimization

-51%

Potential reduce by 296.7 kB

  • Original 586.7 kB
  • After minification 290.0 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. Obviously, ZX Spectrum 4 needs image optimization as it can save up to 296.7 kB or 51% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

CSS Optimization

-19%

Potential reduce by 296 B

  • Original 1.5 kB
  • After minification 1.5 kB
  • After compression 1.2 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. Zxspectrum4.net needs all CSS files to be minified and compressed as it can save up to 296 B or 19% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

35

After Optimization

35

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 35 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ZX Spectrum 4. According to our analytics all requests are already optimized.

Network Requests Diagram

zxspectrum4.net

zxspectrum4.net

1004 ms

zxspectrum4.net

zxspectrum4.net

473 ms

style.css

style.css

155 ms

layout.css

layout.css

233 ms

css

css

33 ms

widgets.js

widgets.js

49 ms

navmenu_btn_bg.jpg

navmenu_btn_bg.jpg

86 ms

content_bgd.jpg

content_bgd.jpg

86 ms

content_bgd_top.jpg

content_bgd_top.jpg

86 ms

logo.png

logo.png

163 ms

micromart_score.png

micromart_score.png

241 ms

micromart_editors_choice.png

micromart_editors_choice.png

163 ms

zx_spectrum_emulator.png

zx_spectrum_emulator.png

466 ms

c1.png

c1.png

312 ms

10_years.png

10_years.png

317 ms

1page_emu.jpg

1page_emu.jpg

241 ms

sphere_download.png

sphere_download.png

241 ms

setup.png

setup.png

318 ms

1page_database.jpg

1page_database.jpg

319 ms

register.png

register.png

319 ms

footer_bgd.gif

footer_bgd.gif

389 ms

logo_2.png

logo_2.png

389 ms

vectron.jpg

vectron.jpg

389 ms

paper.boy2.load.jpg

paper.boy2.load.jpg

390 ms

paper.boy2.jpg

paper.boy2.jpg

392 ms

operation.wolf.jpg

operation.wolf.jpg

458 ms

manic.miner.menu.jpg

manic.miner.menu.jpg

465 ms

dizzy.jpg

dizzy.jpg

467 ms

kokotoni.wilf.jpg

kokotoni.wilf.jpg

467 ms

jungle.trouble.jpg

jungle.trouble.jpg

467 ms

jetpac.load.jpg

jetpac.load.jpg

533 ms

spectrum48k_2_copy.jpg

spectrum48k_2_copy.jpg

610 ms

widget_iframe.2f70fb173b9000da126c79afe2098f02.html

widget_iframe.2f70fb173b9000da126c79afe2098f02.html

22 ms

settings

settings

69 ms

button.856debeac157d9669cf51e73a08fbc93.js

button.856debeac157d9669cf51e73a08fbc93.js

2 ms

embeds

embeds

22 ms

follow_button.2f70fb173b9000da126c79afe2098f02.en.html

follow_button.2f70fb173b9000da126c79afe2098f02.en.html

18 ms

Accessibility Review

zxspectrum4.net accessibility score

71

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

zxspectrum4.net best practices score

75

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

SEO Factors

zxspectrum4.net SEO score

58

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

High

Image elements do not have [alt] attributes

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 Zxspectrum4.net 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 Zxspectrum4.net 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

zxspectrum4.net

Open Graph description is not detected on the main page of ZX Spectrum 4. 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: