Tools & Wizards About Us
radiodv.net screenshot

Report Summary

  • 100

    Performance

    Renders faster than
    97% of other websites

  • 49

    Accessibility

    Visual factors better than
    that of 20% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

radiodv.net

РадиоДВ - Радиолюбительские конструкции и продажа радиоаппаратуры

Page Load Speed

3 sec in total

First Response

222 ms

Resources Loaded

1 sec

Page Rendered

1.7 sec

radiodv.net screenshot

About Website

Welcome to radiodv.net homepage info - get ready to check Radiodv best content for Russia right away, or after learning these important things about radiodv.net

Трансиверы, Приёмники, Дуплексеры, Трансвертеры, Радиостанции, Радиомаячки, Интерфейс Icom CI-V

Visit radiodv.net

Key Findings

We analyzed Radiodv.net page load time and found that the first response time was 222 ms and then it took 2.8 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

radiodv.net performance score

100

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.2 s

99/100

10%

LCP (Largest Contentful Paint)

Value1.2 s

100/100

25%

SI (Speed Index)

Value1.7 s

100/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value1.3 s

100/100

10%

Network Requests Diagram

radiodv.net

222 ms

radiodv.net

535 ms

nav.css

156 ms

nav1.css

236 ms

osnova.css

237 ms

Our browser made a total of 13 requests to load all elements on the main page. We found that all of those requests were addressed to Radiodv.net and no external sources were called. The less responsive or slowest element that took the longest time to load (535 ms) belongs to the original domain Radiodv.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 88.0 kB (63%)

Content Size

140.1 kB

After Optimization

52.1 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Radiodv.net main page is 140.1 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. Only 5% of websites need less resources to load. HTML takes 99.5 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 81.8 kB

  • Original 99.5 kB
  • After minification 89.2 kB
  • After compression 17.7 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 81.8 kB or 82% of the original size.

Image Optimization

-13%

Potential reduce by 4.9 kB

  • Original 37.8 kB
  • After minification 32.9 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, Radiodv needs image optimization as it can save up to 4.9 kB or 13% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

CSS Optimization

-45%

Potential reduce by 1.2 kB

  • Original 2.7 kB
  • After minification 2.7 kB
  • After compression 1.5 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. Radiodv.net needs all CSS files to be minified and compressed as it can save up to 1.2 kB or 45% of the original size.

Requests Breakdown

Number of requests can be reduced by 3 (27%)

Requests Now

11

After Optimization

8

  • Images
  • CSS

The browser has sent 11 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Radiodv. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

radiodv.net

radiodv.net

222 ms

radiodv.net

radiodv.net

535 ms

nav.css

nav.css

156 ms

nav1.css

nav1.css

236 ms

osnova.css

osnova.css

237 ms

table.css

table.css

237 ms

gray_line.png

gray_line.png

289 ms

logo.png

logo.png

315 ms

menu.png

menu.png

84 ms

thin_gray_line.png

thin_gray_line.png

92 ms

09sm.jpg

09sm.jpg

85 ms

14sm.jpg

14sm.jpg

84 ms

20sm.jpg

20sm.jpg

112 ms

Accessibility Review

radiodv.net accessibility score

49

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.

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

radiodv.net 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

High

Serves images with low resolution

SEO Factors

radiodv.net SEO score

69

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

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    RU

  • Language Claimed

    N/A

  • Encoding

    WINDOWS-1251

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Radiodv.net can be misinterpreted by Google and other search engines. Our service has detected that Russian 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 Radiodv.net main page’s claimed encoding is windows-1251. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

radiodv.net

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