Tools & Wizards About Us
dver-k.ru screenshot

Report Summary

  • 18

    Performance

    Renders faster than
    34% of other websites

  • 50

    Accessibility

    Visual factors better than
    that of 21% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 84

    SEO

    Google-friendlier than
    52% of websites

dver-k.ru

Интернет магазин дверей - замер, доставка, установка

Page Load Speed

9.4 sec in total

First Response

557 ms

Resources Loaded

8.6 sec

Page Rendered

269 ms

dver-k.ru screenshot

About Website

Welcome to dver-k.ru homepage info - get ready to check Dver K best content for Russia right away, or after learning these important things about dver-k.ru

Двери на Каширском дворе - интернет магазин; продажа межкомнатных дверей наилучших по качеству и цене; бесплатный замер, быстрая доставка и установка.

Visit dver-k.ru

Key Findings

We analyzed Dver-k.ru page load time and found that the first response time was 557 ms and then it took 8.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

dver-k.ru performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.3 s

7/100

10%

LCP (Largest Contentful Paint)

Value8.8 s

1/100

25%

SI (Speed Index)

Value10.5 s

7/100

10%

TBT (Total Blocking Time)

Value6,020 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.004

100/100

15%

TTI (Time to Interactive)

Value13.6 s

11/100

10%

Network Requests Diagram

dver-k.ru

557 ms

style.css

136 ms

AC_RunActiveContent.js

284 ms

jquery-1.8.3.min.js

414 ms

highslide.js

427 ms

Our browser made a total of 163 requests to load all elements on the main page. We found that 89% of them (145 requests) were addressed to the original Dver-k.ru, 4% (6 requests) were made to Mc.yandex.ru and 2% (4 requests) were made to Top-fwz1.mail.ru. The less responsive or slowest element that took the longest time to load (5.6 sec) belongs to the original domain Dver-k.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 434.8 kB (33%)

Content Size

1.3 MB

After Optimization

870.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Dver-k.ru main page is 1.3 MB. 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. Images take 921.2 kB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 84.1 kB

  • Original 98.1 kB
  • After minification 84.0 kB
  • After compression 13.9 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 14.1 kB, which is 14% 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 84.1 kB or 86% of the original size.

Image Optimization

-19%

Potential reduce by 173.6 kB

  • Original 921.2 kB
  • After minification 747.5 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. Obviously, Dver K needs image optimization as it can save up to 173.6 kB or 19% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-59%

Potential reduce by 153.3 kB

  • Original 258.8 kB
  • After minification 245.2 kB
  • After compression 105.5 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 153.3 kB or 59% of the original size.

CSS Optimization

-86%

Potential reduce by 23.7 kB

  • Original 27.6 kB
  • After minification 20.5 kB
  • After compression 3.9 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. Dver-k.ru needs all CSS files to be minified and compressed as it can save up to 23.7 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 29 (18%)

Requests Now

159

After Optimization

130

  • Images
  • JavaScript
  • CSS

The browser has sent 159 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dver K. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

dver-k.ru

dver-k.ru

557 ms

style.css

style.css

136 ms

AC_RunActiveContent.js

AC_RunActiveContent.js

284 ms

jquery-1.8.3.min.js

jquery-1.8.3.min.js

414 ms

highslide.js

highslide.js

427 ms

highslide.css

highslide.css

287 ms

hs.js

hs.js

284 ms

share.js

share.js

14 ms

watch.js

watch.js

170 ms

yandex.js

yandex.js

281 ms

top100.jcn

top100.jcn

367 ms

watch.js

watch.js

851 ms

cycounter

cycounter

273 ms

kdoors_top.png

kdoors_top.png

135 ms

kdoors_25.jpg

kdoors_25.jpg

138 ms

doors.gif

doors.gif

275 ms

kdoors_31.jpg

kdoors_31.jpg

136 ms

cat_room_door.png

cat_room_door.png

139 ms

cat_office_door.png

cat_office_door.png

141 ms

cat_glace.png

cat_glace.png

271 ms

cat_furn.png

cat_furn.png

273 ms

kdoors_07.jpg

kdoors_07.jpg

275 ms

kdoors_32.jpg

kdoors_32.jpg

277 ms

kdoors_02.jpg

kdoors_02.jpg

278 ms

kdoors_03.jpg

kdoors_03.jpg

404 ms

kdoors_24.jpg

kdoors_24.jpg

404 ms

menu_back.png

menu_back.png

408 ms

kdoors_26.jpg

kdoors_26.jpg

410 ms

kdoors_35.jpg

kdoors_35.jpg

413 ms

kdoors_36.jpg

kdoors_36.jpg

413 ms

kdoors_37.jpg

kdoors_37.jpg

538 ms

dostavka.png

dostavka.png

539 ms

ustanovka.png

ustanovka.png

545 ms

contakts.png

contakts.png

550 ms

kdoors_12.jpg

kdoors_12.jpg

553 ms

blank.gif

blank.gif

552 ms

button.gif

button.gif

5548 ms

mezhkomnatnye_dveri_ot_proizvoditelya_patriot_dg_belenyj_dub.jpg

mezhkomnatnye_dveri_ot_proizvoditelya_patriot_dg_belenyj_dub.jpg

5548 ms

mezhkomnanatnye_dveri_patriot_do_belenyj_dub.jpg

mezhkomnanatnye_dveri_patriot_do_belenyj_dub.jpg

5549 ms

mezhkomnatnye_dveri_ot_proizvoditelya_patriot_dg_seryj_dub.jpg

mezhkomnatnye_dveri_ot_proizvoditelya_patriot_dg_seryj_dub.jpg

5550 ms

mezhkomnatnye_dveri_patriot_do_seryj_dub.jpg

mezhkomnatnye_dveri_patriot_do_seryj_dub.jpg

5551 ms

mezhkomnatnye_dveri_ot_proizvoditelya_molding_belenyj_dub.jpg

mezhkomnatnye_dveri_ot_proizvoditelya_molding_belenyj_dub.jpg

5551 ms

mezhkomnatnye_dveri_ot_roizvoditelya_molding_venge.jpg

mezhkomnatnye_dveri_ot_roizvoditelya_molding_venge.jpg

5553 ms

mezhkomnatnye_dveri_ot_proizvoditelya_zebrano.jpg

mezhkomnatnye_dveri_ot_proizvoditelya_zebrano.jpg

5554 ms

mezhkomnatnye_dveri_ot_proizvoditelya_venge-seryj_dub.jpg

mezhkomnatnye_dveri_ot_proizvoditelya_venge-seryj_dub.jpg

5555 ms

mezhkomnatnye_dveri_ot_proizvoditelya_patriot_do_belenyj_dub.jpg

mezhkomnatnye_dveri_ot_proizvoditelya_patriot_do_belenyj_dub.jpg

5556 ms

mezhkomnatnye_dveri_ot_proizvoditelya_patriot_do_venge.jpg

mezhkomnatnye_dveri_ot_proizvoditelya_patriot_do_venge.jpg

5556 ms

mezhkomnatnaya_dver_Patriot_belenyj_dub_vertikalnyj_shpon.jpg

mezhkomnatnaya_dver_Patriot_belenyj_dub_vertikalnyj_shpon.jpg

5561 ms

mezhkomnatnye_dveri_komfort_milanskij_oreh-1.jpg

mezhkomnatnye_dveri_komfort_milanskij_oreh-1.jpg

5538 ms

mezhkomnatnye_dveri_komfort_italyanskij_oreh-1.jpg

mezhkomnatnye_dveri_komfort_italyanskij_oreh-1.jpg

5431 ms

mezhkomnatnye_dveri_diez_belenyj_dub.jpg

mezhkomnatnye_dveri_diez_belenyj_dub.jpg

5431 ms

mezhkomnatnye_dveri_diez_venge.jpg

mezhkomnatnye_dveri_diez_venge.jpg

5430 ms

mezhkomnatnye_dveri_streliciya_dof_milanskij_oreh.jpg

mezhkomnatnye_dveri_streliciya_dof_milanskij_oreh.jpg

5430 ms

mezhkomnatnye_dveri_streliciya_dof_italyanskij_oreh.jpg

mezhkomnatnye_dveri_streliciya_dof_italyanskij_oreh.jpg

5430 ms

mezhkomnatnye_dveri_glejs_33X_ispanskij_oreh.jpg

mezhkomnatnye_dveri_glejs_33X_ispanskij_oreh.jpg

5299 ms

mezhkomnatnye_dveri_glejs_36X_skandi.jpg

mezhkomnatnye_dveri_glejs_36X_skandi.jpg

5300 ms

mezhkomnatnye_dveri_luna_dof_milanskij_oreh.jpg

mezhkomnatnye_dveri_luna_dof_milanskij_oreh.jpg

5300 ms

mezhkomnatnye_dveri_luna_dof_italyanskij_oreh.jpg

mezhkomnatnye_dveri_luna_dof_italyanskij_oreh.jpg

5299 ms

mezhkomnatnye_dveri_mone_dg_oreh.jpg

mezhkomnatnye_dveri_mone_dg_oreh.jpg

5298 ms

mezhkomnatnye_dveri_mone_do_oreh.jpg

mezhkomnatnye_dveri_mone_do_oreh.jpg

5298 ms

mezhkomnatnye_dveri_franchesko__dg.jpg

mezhkomnatnye_dveri_franchesko__dg.jpg

5173 ms

mezhkomnatnye_dveri_franchesko_do.jpg

mezhkomnatnye_dveri_franchesko_do.jpg

5173 ms

mezhkomnatnye_dveri_rafael_dg.jpg

mezhkomnatnye_dveri_rafael_dg.jpg

5171 ms

counter2

counter2

141 ms

mezhkomnatnye_dveri_rafael_do.jpg

mezhkomnatnye_dveri_rafael_do.jpg

5169 ms

dver_brajton_dg.jpg

dver_brajton_dg.jpg

5167 ms

dver_brajton_do.jpg

dver_brajton_do.jpg

5169 ms

dver_vetraz_dg.jpg

dver_vetraz_dg.jpg

5043 ms

dver_vetraz_do.jpg

dver_vetraz_do.jpg

5044 ms

diona_venge-3.jpg

diona_venge-3.jpg

5040 ms

mezhkomnatnaya_dver_Rim_DG_anegri-1.jpg

mezhkomnatnaya_dver_Rim_DG_anegri-1.jpg

5039 ms

mezhkomnatnaya_dver_Rim_DO_anegri.jpg

mezhkomnatnaya_dver_Rim_DO_anegri.jpg

5034 ms

mezhkomnatnaya_dver_YAna_DG.jpg

mezhkomnatnaya_dver_YAna_DG.jpg

5038 ms

advert.gif

advert.gif

94 ms

mezhkomnatnaya_dver_YAna_DO.jpg

mezhkomnatnaya_dver_YAna_DO.jpg

136 ms

mezhkomnatnye_dveri_de-lyuks_DG.jpg

mezhkomnatnye_dveri_de-lyuks_DG.jpg

140 ms

mezhkomnatnye_dveri_de-lyuks_DO.jpg

mezhkomnatnye_dveri_de-lyuks_DO.jpg

140 ms

mezhkomnatnye_dveri_iren_DG-1.jpg

mezhkomnatnye_dveri_iren_DG-1.jpg

135 ms

mezhkomnatnye_dveri_iren_DO.jpg

mezhkomnatnye_dveri_iren_DO.jpg

138 ms

mezhkomnatnaya_dver_Natel_DO_belenyj_dub.jpg

mezhkomnatnaya_dver_Natel_DO_belenyj_dub.jpg

138 ms

mezhkomnatnaya_dver_Natel_DO_venge.jpg

mezhkomnatnaya_dver_Natel_DO_venge.jpg

264 ms

mezhkomnatnye_dveri_siciliya_dg.jpg

mezhkomnatnye_dveri_siciliya_dg.jpg

266 ms

mezhkomnatnye_dveri_siciliya_do.jpg

mezhkomnatnye_dveri_siciliya_do.jpg

268 ms

mezhkomnatnaya_dver_Senator_DG.jpg

mezhkomnatnaya_dver_Senator_DG.jpg

269 ms

mezhkomnatnaya_dver_Senator_DO.jpg

mezhkomnatnaya_dver_Senator_DO.jpg

268 ms

mezhkomnatnaya_dver_Diadema_DG.jpg

mezhkomnatnaya_dver_Diadema_DG.jpg

268 ms

mezhkomnatnaya_dver_Diadema_DO.jpg

mezhkomnatnaya_dver_Diadema_DO.jpg

392 ms

mezhkomnatnaya_dver_Natali_DG.jpg

mezhkomnatnaya_dver_Natali_DG.jpg

394 ms

mezhkomnatnaya_dver_Natali_DO.jpg

mezhkomnatnaya_dver_Natali_DO.jpg

400 ms

mezhkomnatnaya_dver_Labirint-1.jpg

mezhkomnatnaya_dver_Labirint-1.jpg

400 ms

mezhkomnatnaya_dver_Labirint.jpg

mezhkomnatnaya_dver_Labirint.jpg

402 ms

streliciya_it_oreh_dof_3.jpg

streliciya_it_oreh_dof_3.jpg

403 ms

mezhkomnatnye_dveri_C-781_DG.jpg

mezhkomnatnye_dveri_C-781_DG.jpg

520 ms

mezhkomnatnye_dveri_C-781_DO.jpg

mezhkomnatnye_dveri_C-781_DO.jpg

521 ms

mezhkomnatnye_dveri_C-782_DG.jpg

mezhkomnatnye_dveri_C-782_DG.jpg

529 ms

mezhkomnatnye_dveri_C-782_DO.jpg

mezhkomnatnye_dveri_C-782_DO.jpg

529 ms

mezhkomnatnye_dveri_C-737_DG.jpg

mezhkomnatnye_dveri_C-737_DG.jpg

530 ms

mezhkomnatnye_dveri_C-737_DO.jpg

mezhkomnatnye_dveri_C-737_DO.jpg

530 ms

dver_merbau_DG.jpg

dver_merbau_DG.jpg

648 ms

dver_merbau_DO.jpg

dver_merbau_DO.jpg

649 ms

mezhkomnatnye_dveri_M-40_DG.jpg

mezhkomnatnye_dveri_M-40_DG.jpg

660 ms

mezhkomnatnye_dveri_M-40_DO.jpg

mezhkomnatnye_dveri_M-40_DO.jpg

659 ms

mezhkomnatnye_dveri_oktava_DG.jpg

mezhkomnatnye_dveri_oktava_DG.jpg

660 ms

mezhkomnatnye_dveri_oktava_DO.jpg

mezhkomnatnye_dveri_oktava_DO.jpg

661 ms

dver_dayana_DG.png

dver_dayana_DG.png

774 ms

dver_dayana_DO.jpg

dver_dayana_DO.jpg

775 ms

mezhkomnatnaya_dver_Leon-M_DG.jpg

mezhkomnatnaya_dver_Leon-M_DG.jpg

788 ms

mezhkomnatnaya_dver_Leon-M_DO.jpg

mezhkomnatnaya_dver_Leon-M_DO.jpg

787 ms

dver_lora_DO.jpg

dver_lora_DO.jpg

788 ms

hit

hit

260 ms

dver_lora_DO_oreh.jpg

dver_lora_DO_oreh.jpg

788 ms

top100.scn

top100.scn

376 ms

code.js

code.js

138 ms

b-share.png

b-share.png

15 ms

b-share-icon.png

b-share-icon.png

13 ms

b-share-popup_down__tail.png

b-share-popup_down__tail.png

14 ms

dver_esedra_DG_belenyj_dub.jpg

dver_esedra_DG_belenyj_dub.jpg

809 ms

dver_esedra_DO_belenyj_dub.jpg

dver_esedra_DO_belenyj_dub.jpg

805 ms

dveri_anegri.jpg

dveri_anegri.jpg

825 ms

mezhkomnatnye_dveri_vetraz_dg.jpg

mezhkomnatnye_dveri_vetraz_dg.jpg

823 ms

mezhkomnatnye_dveri_vetraz_do.jpg

mezhkomnatnye_dveri_vetraz_do.jpg

825 ms

mezhkomnatnye_dveri_sandro_dg.jpg

mezhkomnatnye_dveri_sandro_dg.jpg

825 ms

1

1

85 ms

counter

counter

139 ms

5547193

5547193

145 ms

26812653

26812653

88 ms

mezhkomnatnye_dveri_sandro_do.jpg

mezhkomnatnye_dveri_sandro_do.jpg

808 ms

mezhkomnatnye_dveri_premera_gold_dg.jpg

mezhkomnatnye_dveri_premera_gold_dg.jpg

807 ms

mezhkomnatnye_dveri_premera_gold_do.jpg

mezhkomnatnye_dveri_premera_gold_do.jpg

826 ms

mezhkomnatnye_dveri_leona_deko_dg.jpg

mezhkomnatnye_dveri_leona_deko_dg.jpg

824 ms

mezhkomnatnye_dveri_leona_deko_do.jpg

mezhkomnatnye_dveri_leona_deko_do.jpg

827 ms

mezhkomnatnye_dveri_premera-5_dg.jpg

mezhkomnatnye_dveri_premera-5_dg.jpg

825 ms

mezhkomnatnye_dveri_premera-5_do.jpg

mezhkomnatnye_dveri_premera-5_do.jpg

807 ms

mezhkomnatnye_dveri_M-10_buk.jpg

mezhkomnatnye_dveri_M-10_buk.jpg

806 ms

mezhkomnatnye_dveri_M-10_oreh.jpg

mezhkomnatnye_dveri_M-10_oreh.jpg

821 ms

model_buk_12.jpg

model_buk_12.jpg

823 ms

mezhkomnatnye_dveri_M-12_vishnya.jpg

mezhkomnatnye_dveri_M-12_vishnya.jpg

818 ms

mezhkomnatnye_dveri_M-14_oreh.jpg

mezhkomnatnye_dveri_M-14_oreh.jpg

819 ms

mezhkomnatnye_dveri_M-14_vishnya.jpg

mezhkomnatnye_dveri_M-14_vishnya.jpg

808 ms

mezhkomnatnye_dveri_knizhki_M-14F_buk.jpg

mezhkomnatnye_dveri_knizhki_M-14F_buk.jpg

807 ms

mezhkomnatnye_dveri_M-14F_oreh.jpg

mezhkomnatnye_dveri_M-14F_oreh.jpg

823 ms

mezhkomnatnye_dveri_S6_milanskij_oreh.jpg

mezhkomnatnye_dveri_S6_milanskij_oreh.jpg

826 ms

mezhkomnatnye_dveri_S-6_italyanskij_oreh.jpg

mezhkomnatnye_dveri_S-6_italyanskij_oreh.jpg

821 ms

belye_dveri.jpg

belye_dveri.jpg

824 ms

dver_belyj_yasen_1h.jpg

dver_belyj_yasen_1h.jpg

806 ms

dver_belyj_yasen_2h.jpg

dver_belyj_yasen_2h.jpg

806 ms

dver_seryj_dub_3h.jpg

dver_seryj_dub_3h.jpg

822 ms

dver_seryj_dub_4h.jpg

dver_seryj_dub_4h.jpg

823 ms

mezhkomnatnye_dveri_muza_dg_dub_smoki.jpg

mezhkomnatnye_dveri_muza_dg_dub_smoki.jpg

822 ms

mezhkomnatnye_dveri_muza_do_dub_smoki.jpg

mezhkomnatnye_dveri_muza_do_dub_smoki.jpg

823 ms

mezhkomnatnye_dveri_maestro_dg_vishnya.jpg

mezhkomnatnye_dveri_maestro_dg_vishnya.jpg

807 ms

mezhkomnatnye_dveri_maestro_do_vishnya.jpg

mezhkomnatnye_dveri_maestro_do_vishnya.jpg

805 ms

dver_melinga_7h_belenyj_dub.jpg

dver_melinga_7h_belenyj_dub.jpg

822 ms

dver_melinga_7h_venge.jpg

dver_melinga_7h_venge.jpg

823 ms

external.png

external.png

820 ms

kdoors_41.jpg

kdoors_41.jpg

821 ms

line.gif

line.gif

806 ms

kdoors_48.jpg

kdoors_48.jpg

805 ms

kdoors_54.jpg

kdoors_54.jpg

822 ms

tracker

tracker

139 ms

drop-shadow.png

drop-shadow.png

135 ms

zoomout.cur

zoomout.cur

139 ms

loader.white.gif

loader.white.gif

140 ms

Accessibility Review

dver-k.ru accessibility score

50

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

Heading elements are not in a sequentially-descending order

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

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

dver-k.ru best practices score

58

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

dver-k.ru SEO score

84

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Dver-k.ru 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 Dver-k.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

dver-k.ru

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