Tools & Wizards About Us
sdr.42dx.ru screenshot

Report Summary

  • 17

    Performance

    Renders faster than
    32% of other websites

  • 69

    Accessibility

    Visual factors better than
    that of 34% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

sdr.42dx.ru

WebSDR приёмники Новокузнецка 

Page Load Speed

8 sec in total

First Response

1.1 sec

Resources Loaded

6.6 sec

Page Rendered

223 ms

sdr.42dx.ru screenshot

About Website

Click here to check amazing Sdr 42 Dx content for Russia. Otherwise, check out these important facts you probably never knew about sdr.42dx.ru

WebSDR Приемники Новокузнецка - 42DX.ru | Отличный помощник для радио начинающих в настройке антенн и анализа качества аудио сигнала радиостанции.

Visit sdr.42dx.ru

Key Findings

We analyzed Sdr.42dx.ru page load time and found that the first response time was 1.1 sec and then it took 6.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

sdr.42dx.ru performance score

17

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.2 s

8/100

10%

LCP (Largest Contentful Paint)

Value13.6 s

0/100

25%

SI (Speed Index)

Value20.7 s

0/100

10%

TBT (Total Blocking Time)

Value860 ms

33/100

30%

CLS (Cumulative Layout Shift)

Value0.328

35/100

15%

TTI (Time to Interactive)

Value14.7 s

8/100

10%

Network Requests Diagram

sdr.42dx.ru

1118 ms

style.css

1527 ms

bandinfo.js

794 ms

websdr-base.js

2080 ms

open.js

923 ms

Our browser made a total of 47 requests to load all elements on the main page. We found that 74% of them (35 requests) were addressed to the original Sdr.42dx.ru, 6% (3 requests) were made to Mc.yandex.com and 4% (2 requests) were made to Yandex.ru. The less responsive or slowest element that took the longest time to load (3.1 sec) belongs to the original domain Sdr.42dx.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 336.3 kB (59%)

Content Size

570.4 kB

After Optimization

234.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sdr.42dx.ru main page is 570.4 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. 25% of websites need less resources to load. Javascripts take 475.7 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 35.5 kB

  • Original 45.7 kB
  • After minification 40.5 kB
  • After compression 10.2 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. This page needs HTML code to be minified as it can gain 5.2 kB, which is 11% 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 35.5 kB or 78% of the original size.

Image Optimization

-42%

Potential reduce by 8.2 kB

  • Original 19.6 kB
  • After minification 11.4 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, Sdr 42 Dx needs image optimization as it can save up to 8.2 kB or 42% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-56%

Potential reduce by 267.5 kB

  • Original 475.7 kB
  • After minification 421.5 kB
  • After compression 208.2 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 267.5 kB or 56% of the original size.

CSS Optimization

-85%

Potential reduce by 25.2 kB

  • Original 29.4 kB
  • After minification 19.7 kB
  • After compression 4.3 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. Sdr.42dx.ru needs all CSS files to be minified and compressed as it can save up to 25.2 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 32 (71%)

Requests Now

45

After Optimization

13

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 45 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sdr 42 Dx. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 19 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

sdr.42dx.ru

sdr.42dx.ru

1118 ms

style.css

style.css

1527 ms

bandinfo.js

bandinfo.js

794 ms

websdr-base.js

websdr-base.js

2080 ms

open.js

open.js

923 ms

clock24.js

clock24.js

1119 ms

count.js

count.js

869 ms

html5media.min.js

html5media.min.js

1492 ms

jquery-3.0.0.min.js

jquery-3.0.0.min.js

1677 ms

jquery.min.js

jquery.min.js

3123 ms

jquery.kontrol.js

jquery.kontrol.js

2656 ms

main.js

main.js

2150 ms

sound.start.js

sound.start.js

2182 ms

latest.min.js

latest.min.js

2203 ms

catSync.min.js

catSync.min.js

2564 ms

catSync.min.css

catSync.min.css

2649 ms

context.js

context.js

917 ms

js

js

57 ms

cycounter

cycounter

159 ms

3_1_FFFFFFFF_EFEFEFFF_0_pageviews

3_1_FFFFFFFF_EFEFEFFF_0_pageviews

626 ms

bg.jpg

bg.jpg

1490 ms

filterIcon.png

filterIcon.png

458 ms

smeter1up.png

smeter1up.png

602 ms

smeter1down.png

smeter1down.png

492 ms

edgelower.png

edgelower.png

523 ms

edgeupper.png

edgeupper.png

493 ms

carrier.png

carrier.png

1136 ms

bgh.png

bgh.png

1154 ms

td.png

td.png

1158 ms

hover.png

hover.png

1240 ms

js

js

57 ms

analytics.js

analytics.js

27 ms

digital-dream-fat-narrow.ttf

digital-dream-fat-narrow.ttf

1298 ms

03.png

03.png

1651 ms

mob.png

mob.png

1639 ms

collect

collect

45 ms

tag.js

tag.js

904 ms

advert.gif

advert.gif

807 ms

sync_cookie_image_decide

sync_cookie_image_decide

143 ms

csv

csv

42 ms

1705970968-b0z0i0.png

1705970968-b0z0i0.png

485 ms

websdr-waterfall.js

websdr-waterfall.js

472 ms

~~fetchdx

~~fetchdx

548 ms

~~fetchdx

~~fetchdx

480 ms

1705970968-b6z0i0.png

1705970968-b6z0i0.png

546 ms

scaleblack.png

scaleblack.png

540 ms

1

1

140 ms

Accessibility Review

sdr.42dx.ru accessibility score

69

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[id] attributes on active, focusable elements are not unique

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

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

sdr.42dx.ru best practices score

67

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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

sdr.42dx.ru SEO score

83

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    RU

  • Language Claimed

    RU

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sdr.42dx.ru can be misinterpreted by Google and other search engines. Our service has detected that Russian is used on the page, and it matches the claimed language. Our system also found out that Sdr.42dx.ru 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

sdr.42dx.ru

Open Graph data is detected on the main page of PARSED_DOMAIN, but there is no image specified in description. It would be a good idea for the website admin to select a nice image that can properly represent the website in Open Graph data, otherwise the first found image will be taken for this purpose and social media information block will look like this: