Tools & Wizards About Us
sack.de screenshot

Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 80

    Accessibility

    Visual factors better than
    that of 49% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

sack.de

Ihre Online-Buchhandlung für Recht, Wirtschaft, Steuern

Page Load Speed

5.2 sec in total

First Response

418 ms

Resources Loaded

4.1 sec

Page Rendered

633 ms

sack.de screenshot

About Website

Welcome to sack.de homepage info - get ready to check Sack best content for Germany right away, or after learning these important things about sack.de

Willkommen bei Sack Fachmedien, Ihrer Online-Buchhandlung für sämtliche Literatur aus den Bereichen Recht, Wirtschaft und Steuern.

Visit sack.de

Key Findings

We analyzed Sack.de page load time and found that the first response time was 418 ms and then it took 4.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

sack.de performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.8 s

12/100

10%

LCP (Largest Contentful Paint)

Value15.7 s

0/100

25%

SI (Speed Index)

Value10.7 s

7/100

10%

TBT (Total Blocking Time)

Value1,240 ms

19/100

30%

CLS (Cumulative Layout Shift)

Value0.244

51/100

15%

TTI (Time to Interactive)

Value14.5 s

9/100

10%

Network Requests Diagram

sack.de

418 ms

www.sack.de

733 ms

jquery-3.6.0.min.js

84 ms

jquery-ui.min.js

146 ms

masterCommon

235 ms

Our browser made a total of 124 requests to load all elements on the main page. We found that 37% of them (46 requests) were addressed to the original Sack.de, 49% (61 requests) were made to Media.sack.de and 9% (11 requests) were made to Cms.sack.de. The less responsive or slowest element that took the longest time to load (2 sec) belongs to the original domain Sack.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 277.2 kB (17%)

Content Size

1.6 MB

After Optimization

1.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sack.de main page is 1.6 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. 70% of websites need less resources to load. Images take 1.4 MB which makes up the majority of the site volume.

HTML Optimization

-91%

Potential reduce by 237.4 kB

  • Original 259.8 kB
  • After minification 159.1 kB
  • After compression 22.4 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 100.8 kB, which is 39% 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 237.4 kB or 91% of the original size.

Image Optimization

-3%

Potential reduce by 39.8 kB

  • Original 1.4 MB
  • After minification 1.3 MB

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. Sack images are well optimized though.

JavaScript Optimization

-10%

Potential reduce by 39 B

  • Original 401 B
  • After minification 401 B
  • After compression 362 B

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. This website has mostly compressed JavaScripts.

CSS Optimization

-10%

Potential reduce by 39 B

  • Original 384 B
  • After minification 384 B
  • After compression 345 B

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. Sack.de has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 19 (17%)

Requests Now

113

After Optimization

94

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 113 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sack. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

sack.de

sack.de

418 ms

www.sack.de

www.sack.de

733 ms

jquery-3.6.0.min.js

jquery-3.6.0.min.js

84 ms

jquery-ui.min.js

jquery-ui.min.js

146 ms

masterCommon

masterCommon

235 ms

fonts

fonts

435 ms

master

master

477 ms

effects

effects

359 ms

animate

animate

395 ms

banner.js

banner.js

133 ms

style.css

style.css

383 ms

sackMasterScripts

sackMasterScripts

999 ms

umbraco

umbraco

603 ms

trusted-shop.js

trusted-shop.js

990 ms

gtm.js

gtm.js

864 ms

banner_verwaltung_literatur_08_2022_555x250.jpg

banner_verwaltung_literatur_08_2022_555x250.jpg

1665 ms

9783423531399

9783423531399

1178 ms

seal_65.png

seal_65.png

1386 ms

call-us.svg

call-us.svg

921 ms

delivery_truck.png

delivery_truck.png

888 ms

logo_sack.svg

logo_sack.svg

885 ms

icon_shoppingcart.svg

icon_shoppingcart.svg

920 ms

icon_account_new.svg

icon_account_new.svg

888 ms

icon_menu.svg

icon_menu.svg

885 ms

veranstaltungen_3.png

veranstaltungen_3.png

1171 ms

sonderangebote_3.png

sonderangebote_3.png

2003 ms

download_3.png

download_3.png

1487 ms

jurastudium_3.png

jurastudium_3.png

1519 ms

paypal.png

paypal.png

1032 ms

rechnung.png

rechnung.png

948 ms

mastercard.png

mastercard.png

1160 ms

visa.png

visa.png

1252 ms

trustedshop.png

trustedshop.png

1374 ms

aws.png

aws.png

1259 ms

facebook.png

facebook.png

1355 ms

xing.png

xing.png

1359 ms

linkedin.png

linkedin.png

1452 ms

twitter.png

twitter.png

1478 ms

instagram.png

instagram.png

1477 ms

loading-indicator.gif

loading-indicator.gif

1771 ms

9783406786259

9783406786259

1259 ms

9783406787935

9783406787935

1247 ms

9783504426989

9783504426989

1255 ms

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1255 ms

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9783406787942

1259 ms

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1260 ms

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1347 ms

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9783802127359

1359 ms

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1352 ms

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9783482651496

1359 ms

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1355 ms

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1361 ms

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1441 ms

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1446 ms

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9783802125942

1470 ms

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1466 ms

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1469 ms

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9783800669097

1463 ms

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9783848776597

1540 ms

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1542 ms

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9783800669189

1557 ms

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9783406791703

1554 ms

9783110797060

9783110797060

1573 ms

9783811458277

9783811458277

1573 ms

9783848781362

9783848781362

1638 ms

9783406786792

9783406786792

1640 ms

9783811458260

9783811458260

1660 ms

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9783406786655

1662 ms

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9783867528139

1685 ms

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9783811455269

1671 ms

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9783800665747

1719 ms

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9783811453180

1719 ms

9783406795619

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1736 ms

9783406778957

9783406778957

1742 ms

9783816840527

9783816840527

1805 ms

banner_grundsteuer_08_22_555x250px.jpg

banner_grundsteuer_08_22_555x250px.jpg

1497 ms

banner_habersack_08_2022_555x250.jpg

banner_habersack_08_2022_555x250.jpg

1498 ms

banner_beck-online_aktion_555x250px.jpg

banner_beck-online_aktion_555x250px.jpg

1631 ms

banner_pflege_1150x250px.jpg

banner_pflege_1150x250px.jpg

1674 ms

habersack.jpg

habersack.jpg

1298 ms

blogbanner_quadrat_kein_text_web.jpg

blogbanner_quadrat_kein_text_web.jpg

1398 ms

logos_juristische_datenbanken.png

logos_juristische_datenbanken.png

1698 ms

lieferdienst.png

lieferdienst.png

1592 ms

photo-by-dylan-gillis-on-unsplash-min.jpg

photo-by-dylan-gillis-on-unsplash-min.jpg

1697 ms

telefonhotline.png

telefonhotline.png

1675 ms

Neu.png

Neu.png

1109 ms

icon_inbasket.svg

icon_inbasket.svg

1124 ms

icon_inbasket_red.svg

icon_inbasket_red.svg

1105 ms

Toptitel.png

Toptitel.png

1160 ms

texgyreadventor-regular-webfont.woff

texgyreadventor-regular-webfont.woff

871 ms

SourceSansPro-Regular.otf.woff

SourceSansPro-Regular.otf.woff

1062 ms

SourceSansPro-Light.otf.woff

SourceSansPro-Light.otf.woff

1130 ms

SourceSansPro-ExtraLight.otf.woff

SourceSansPro-ExtraLight.otf.woff

1155 ms

SourceSansPro-Semibold.otf.woff

SourceSansPro-Semibold.otf.woff

1216 ms

SourceSansPro-Bold.otf.woff

SourceSansPro-Bold.otf.woff

1300 ms

SourceSansPro-Black.otf.woff

SourceSansPro-Black.otf.woff

1443 ms

texgyreadventor-bold-webfont.woff

texgyreadventor-bold-webfont.woff

1217 ms

X9723E294AEAE9ECB5535498C6AA7C7BD.js

X9723E294AEAE9ECB5535498C6AA7C7BD.js

156 ms

Get

Get

1189 ms

9783406753879

9783406753879

686 ms

9783504231132

9783504231132

632 ms

9783406776298

9783406776298

622 ms

9783406752872

9783406752872

622 ms

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9783406763489

623 ms

9783503195183

9783503195183

672 ms

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9783504200817

671 ms

9783452297525

9783452297525

603 ms

9783504180812

9783504180812

599 ms

9783406768644

9783406768644

612 ms

9783814540023

9783814540023

623 ms

9783406769481

9783406769481

696 ms

9783814590448

9783814590448

672 ms

9783802125867

9783802125867

615 ms

9783406768873

9783406768873

611 ms

30000000008862

30000000008862

616 ms

9783814582474

9783814582474

675 ms

9783814520100

9783814520100

707 ms

9783814590431

9783814590431

686 ms

9783406687372

9783406687372

636 ms

9783406716812

9783406716812

634 ms

9783406780219

9783406780219

620 ms

9783406744952

9783406744952

661 ms

9783472096238

9783472096238

695 ms

9783406772375

9783406772375

695 ms

Accessibility Review

sack.de accessibility score

80

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

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

High

Some elements have a [tabindex] value greater than 0

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

sack.de best practices score

75

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

SEO Factors

sack.de 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

    DE

  • Language Claimed

    DE

  • Encoding

    N/A

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sack.de can be misinterpreted by Google and other search engines. Our service has detected that German is used on the page, and it matches the claimed language. Our system also found out that Sack.de main page’s claimed encoding is . 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

sack.de

Open Graph data is detected on the main page of Sack. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: