Tools & Wizards About Us
book-sdl.com screenshot

Report Summary

  • 62

    Performance

    Renders faster than
    76% of other websites

  • 61

    Accessibility

    Visual factors better than
    that of 27% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

book-sdl.com

Интернет-издательство электронных книг и видео-курсов Book-SDL.com

Page Load Speed

5.8 sec in total

First Response

1.6 sec

Resources Loaded

3.6 sec

Page Rendered

544 ms

book-sdl.com screenshot

About Website

Visit book-sdl.com now to see the best up-to-date Book SDL content for Russia and also check out these interesting facts you probably never knew about book-sdl.com

Интернет-издательство электронных книг и видео-курсов Book-SDL.com. Сайт о заработке в интернете с помощью создания своего блога, а также - собственных информационных продуктов.

Visit book-sdl.com

Key Findings

We analyzed Book-sdl.com page load time and found that the first response time was 1.6 sec and then it took 4.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

book-sdl.com performance score

62

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

33/100

10%

LCP (Largest Contentful Paint)

Value3.6 s

62/100

25%

SI (Speed Index)

Value7.9 s

23/100

10%

TBT (Total Blocking Time)

Value270 ms

82/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value12.0 s

16/100

10%

Network Requests Diagram

book-sdl.com

1636 ms

openapi.js

257 ms

style.css

236 ms

style.css

232 ms

stpv3.css

231 ms

Our browser made a total of 80 requests to load all elements on the main page. We found that 63% of them (50 requests) were addressed to the original Book-sdl.com, 14% (11 requests) were made to Vk.com and 11% (9 requests) were made to St6-21.vk.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Book-sdl.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 172.9 kB (16%)

Content Size

1.1 MB

After Optimization

923.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Book-sdl.com main page is 1.1 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. 45% of websites need less resources to load. Images take 605.7 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 62.1 kB

  • Original 75.2 kB
  • After minification 70.0 kB
  • After compression 13.1 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 62.1 kB or 83% of the original size.

Image Optimization

-5%

Potential reduce by 30.3 kB

  • Original 605.7 kB
  • After minification 575.4 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. Book SDL images are well optimized though.

JavaScript Optimization

-15%

Potential reduce by 38.3 kB

  • Original 261.6 kB
  • After minification 261.6 kB
  • After compression 223.3 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 38.3 kB or 15% of the original size.

CSS Optimization

-28%

Potential reduce by 42.2 kB

  • Original 153.5 kB
  • After minification 153.5 kB
  • After compression 111.3 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. Book-sdl.com needs all CSS files to be minified and compressed as it can save up to 42.2 kB or 28% of the original size.

Requests Breakdown

Number of requests can be reduced by 44 (60%)

Requests Now

73

After Optimization

29

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 73 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Book SDL. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 21 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

book-sdl.com

book-sdl.com

1636 ms

openapi.js

openapi.js

257 ms

style.css

style.css

236 ms

style.css

style.css

232 ms

stpv3.css

stpv3.css

231 ms

jquery.js

jquery.js

352 ms

openapi.js

openapi.js

396 ms

json2.min.js

json2.min.js

234 ms

socpoll.js

socpoll.js

233 ms

optincrusher.css

optincrusher.css

346 ms

optincrusher.js

optincrusher.js

347 ms

tw-sack.min.js

tw-sack.min.js

350 ms

wp-ds-blogmap.css

wp-ds-blogmap.css

351 ms

script.js

script.js

350 ms

openapi.js

openapi.js

395 ms

openapi.js

openapi.js

257 ms

cufon-yui.js

cufon-yui.js

354 ms

waypoints.min.js

waypoints.min.js

351 ms

jquery-timing.min.js

jquery-timing.min.js

359 ms

wiggle.jquery.js

wiggle.jquery.js

354 ms

1882648904

1882648904

319 ms

openapi.318ba3d5a50b8d6990cb0284cb0e0963.js

openapi.318ba3d5a50b8d6990cb0284cb0e0963.js

235 ms

openapi.318ba3d5a50b8d6990cb0284cb0e0963.js

openapi.318ba3d5a50b8d6990cb0284cb0e0963.js

257 ms

openapi.318ba3d5a50b8d6990cb0284cb0e0963.js

openapi.318ba3d5a50b8d6990cb0284cb0e0963.js

235 ms

openapi.318ba3d5a50b8d6990cb0284cb0e0963.js

openapi.318ba3d5a50b8d6990cb0284cb0e0963.js

228 ms

9may_19-300x285.jpg

9may_19-300x285.jpg

244 ms

PBOOK003.jpg

PBOOK003.jpg

539 ms

200x200.gif

200x200.gif

640 ms

1_1_FFFFFFFF_EEEEEEFF_0_pageviews

1_1_FFFFFFFF_EEEEEEFF_0_pageviews

361 ms

n51-8-sevastopol.jpg

n51-8-sevastopol.jpg

243 ms

gifka-s-novym-godom-sinej-loshadi-2014.gif

gifka-s-novym-godom-sinej-loshadi-2014.gif

711 ms

a-chto-takoe-piramida.jpg

a-chto-takoe-piramida.jpg

243 ms

%D0%A1%D0%BD%D0%B8%D0%BC%D0%BE%D0%BA.png

%D0%A1%D0%BD%D0%B8%D0%BC%D0%BE%D0%BA.png

248 ms

qwertypay1.jpg

qwertypay1.jpg

354 ms

%D0%A1%D0%BD%D0%B8%D0%BC%D0%BE%D0%BA-300x228.png

%D0%A1%D0%BD%D0%B8%D0%BC%D0%BE%D0%BA-300x228.png

463 ms

zar.jpg

zar.jpg

463 ms

351132470.jpg

351132470.jpg

348 ms

vosst-200.png

vosst-200.png

482 ms

3Dkniga-2.png

3Dkniga-2.png

587 ms

hide.png

hide.png

470 ms

show.png

show.png

591 ms

lightbox-close.png

lightbox-close.png

591 ms

upload.gif

upload.gif

163 ms

Bottom_texture.jpg

Bottom_texture.jpg

586 ms

widget_like.php

widget_like.php

241 ms

1882648904

1882648904

149 ms

ga.js

ga.js

49 ms

sheet_b.png

sheet_b.png

468 ms

sheet_t.png

sheet_t.png

570 ms

sheet.png

sheet.png

576 ms

header.png

header.png

577 ms

header.jpg

header.jpg

577 ms

nav.png

nav.png

584 ms

menuseparator.png

menuseparator.png

684 ms

menuitem.png

menuitem.png

691 ms

postmetadataheader_bg.png

postmetadataheader_bg.png

691 ms

blockheader.png

blockheader.png

694 ms

vmenublockheader.png

vmenublockheader.png

693 ms

vmenuitem.png

vmenuitem.png

699 ms

footer_b.png

footer_b.png

767 ms

footer.png

footer.png

811 ms

rssicon.png

rssicon.png

812 ms

watch.js

watch.js

21 ms

__utm.gif

__utm.gif

21 ms

x-runner-duo-blue.png

x-runner-duo-blue.png

761 ms

logo.png

logo.png

762 ms

arrow.gif

arrow.gif

762 ms

submit_gradient.png

submit_gradient.png

830 ms

loader_nav21099712869_3.js

loader_nav21099712869_3.js

274 ms

lite.93f44416.css

lite.93f44416.css

690 ms

lang3_2.js

lang3_2.js

272 ms

c3d11fba.475e3ac7.js

c3d11fba.475e3ac7.js

562 ms

vkui.388c7a16.css

vkui.388c7a16.css

733 ms

xdm.js

xdm.js

561 ms

widgets.d2d14ebe.css

widgets.d2d14ebe.css

561 ms

al_like.js

al_like.js

648 ms

base.ec2ae8ae.css

base.ec2ae8ae.css

728 ms

lite.bcf10ece3464fec8b554bde483fa2494.js

lite.bcf10ece3464fec8b554bde483fa2494.js

261 ms

like_widget.png

like_widget.png

88 ms

upload.gif

upload.gif

100 ms

Accessibility Review

book-sdl.com accessibility score

61

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

book-sdl.com best practices score

50

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

SEO Factors

book-sdl.com SEO score

62

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

    RU

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Book-sdl.com 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 Book-sdl.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

book-sdl.com

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