Tools & Wizards About Us
opt-nsk.com screenshot

Report Summary

  • 63

    Performance

    Renders faster than
    77% of other websites

  • 56

    Accessibility

    Visual factors better than
    that of 24% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

opt-nsk.com

Магазин вентиляционного оборудования - ООО ОПТ-НСК Все для вентиляции г. Новокузнецк

Page Load Speed

3 sec in total

First Response

587 ms

Resources Loaded

2.2 sec

Page Rendered

249 ms

opt-nsk.com screenshot

About Website

Welcome to opt-nsk.com homepage info - get ready to check Opt Nsk best content for Russia right away, or after learning these important things about opt-nsk.com

ООО ОПТ-НСК Все для вентиляции занимается продажей вентиляционного оборудования и предлагает оборудование с хорошим соотношением цена/качество, а под заказ любое существующее на рынке России.

Visit opt-nsk.com

Key Findings

We analyzed Opt-nsk.com page load time and found that the first response time was 587 ms and then it took 2.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

opt-nsk.com performance score

63

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.6 s

65/100

10%

LCP (Largest Contentful Paint)

Value5.2 s

23/100

25%

SI (Speed Index)

Value4.2 s

78/100

10%

TBT (Total Blocking Time)

Value350 ms

73/100

30%

CLS (Cumulative Layout Shift)

Value0.065

97/100

15%

TTI (Time to Interactive)

Value6.3 s

61/100

10%

Network Requests Diagram

opt-nsk.com

587 ms

highslide-full.packed.js

197 ms

style1.css

238 ms

flowplayer-3.2.9.min.js

250 ms

calendar.css

253 ms

Our browser made a total of 55 requests to load all elements on the main page. We found that 87% of them (48 requests) were addressed to the original Opt-nsk.com, 5% (3 requests) were made to Counter.megagroup.ru and 4% (2 requests) were made to Counter.yadro.ru. The less responsive or slowest element that took the longest time to load (860 ms) belongs to the original domain Opt-nsk.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 77.0 kB (20%)

Content Size

378.3 kB

After Optimization

301.3 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Opt-nsk.com main page is 378.3 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. Images take 208.3 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 46.5 kB

  • Original 55.7 kB
  • After minification 49.8 kB
  • After compression 9.2 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 5.9 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 46.5 kB or 83% of the original size.

Image Optimization

-6%

Potential reduce by 12.0 kB

  • Original 208.3 kB
  • After minification 196.3 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. Opt Nsk images are well optimized though.

JavaScript Optimization

-15%

Potential reduce by 15.5 kB

  • Original 105.5 kB
  • After minification 105.4 kB
  • After compression 90.0 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 15.5 kB or 15% of the original size.

CSS Optimization

-34%

Potential reduce by 3.0 kB

  • Original 8.8 kB
  • After minification 8.8 kB
  • After compression 5.8 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. Opt-nsk.com needs all CSS files to be minified and compressed as it can save up to 3.0 kB or 34% of the original size.

Requests Breakdown

Number of requests can be reduced by 24 (48%)

Requests Now

50

After Optimization

26

  • Images
  • JavaScript
  • CSS

The browser has sent 50 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Opt Nsk. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

opt-nsk.com

opt-nsk.com

587 ms

highslide-full.packed.js

highslide-full.packed.js

197 ms

style1.css

style1.css

238 ms

flowplayer-3.2.9.min.js

flowplayer-3.2.9.min.js

250 ms

calendar.css

calendar.css

253 ms

ru.js

ru.js

397 ms

cookie.js

cookie.js

257 ms

widgets.js

widgets.js

328 ms

calendar.packed.js

calendar.packed.js

355 ms

jquery-1.7.2.min.js

jquery-1.7.2.min.js

541 ms

no_cookies.js

no_cookies.js

376 ms

shop_pack_3.js

shop_pack_3.js

389 ms

slider.js

slider.js

455 ms

styles.css

styles.css

473 ms

styles_shop.css

styles_shop.css

503 ms

top_menu.js

top_menu.js

516 ms

left_menu.js

left_menu.js

523 ms

site.min.js

site.min.js

600 ms

5c7791a4b887eec3298b4898.js

5c7791a4b887eec3298b4898.js

646 ms

body_shadow.jpg

body_shadow.jpg

153 ms

logo.png

logo.png

128 ms

zayavka.png

zayavka.png

134 ms

head_map.jpg

head_map.jpg

130 ms

screen.jpg

screen.jpg

148 ms

%D0%B2%D0%BE%D0%B7%D0%B4%D1%83%D1%88%D0%BD%D1%8B%D0%B9_%D0%BA%D0%BB%D0%B0%D0%BF%D0%B0%D0%BD.png

%D0%B2%D0%BE%D0%B7%D0%B4%D1%83%D1%88%D0%BD%D1%8B%D0%B9_%D0%BA%D0%BB%D0%B0%D0%BF%D0%B0%D0%BD.png

253 ms

111.png

111.png

295 ms

38.jpg

38.jpg

356 ms

adres.jpg

adres.jpg

412 ms

whatsapp.png

whatsapp.png

335 ms

4.png

4.png

347 ms

zont.jpg

zont.jpg

394 ms

2_3.jpg

2_3.jpg

437 ms

otv4.png

otv4.png

575 ms

rashodka.png

rashodka.png

647 ms

spacer.gif

spacer.gif

481 ms

foot_logo.png

foot_logo.png

543 ms

cat_top.gif

cat_top.gif

527 ms

cat_bg.jpg

cat_bg.jpg

550 ms

cat_bot.jpg

cat_bot.jpg

601 ms

cat_sep.png

cat_sep.png

639 ms

search_box.jpg

search_box.jpg

655 ms

swap_buttons.png

swap_buttons.png

659 ms

lissant3_1.jpg

lissant3_1.jpg

750 ms

col.gif

col.gif

709 ms

buy2.gif

buy2.gif

737 ms

sre1.jpg

sre1.jpg

823 ms

shufttube100xl3_1.jpg

shufttube100xl3_1.jpg

837 ms

zont.jpg

zont.jpg

860 ms

hit

hit

374 ms

loader.js

loader.js

474 ms

hit

hit

394 ms

api.js

api.js

118 ms

counter

counter

260 ms

459f7e2eac46edc3b33aaf6a07afce57.js

459f7e2eac46edc3b33aaf6a07afce57.js

119 ms

zoomout.cur

zoomout.cur

129 ms

Accessibility Review

opt-nsk.com accessibility score

56

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

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

opt-nsk.com 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

Missing source maps for large first-party JavaScript

SEO Factors

opt-nsk.com SEO score

62

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

Language and Encoding

  • Language Detected

    RU

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Opt-nsk.com can be misinterpreted by Google and other search engines. Our service has detected that Russian is used on the page, and it does not match the claimed English language. Our system also found out that Opt-nsk.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

opt-nsk.com

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