Tools & Wizards About Us
lehmanns.de screenshot

Report Summary

  • 45

    Performance

    Renders faster than
    64% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 51% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

lehmanns.de

Lehmanns.de: Fachbücher und eBooks versandkostenfrei bestellen - Lehmanns.de

Page Load Speed

12.7 sec in total

First Response

390 ms

Resources Loaded

11.7 sec

Page Rendered

643 ms

lehmanns.de screenshot

About Website

Click here to check amazing Lehmanns content for Germany. Otherwise, check out these important facts you probably never knew about lehmanns.de

Bücher versandkostenfrei und ohne Mindestbestellwert kaufen. Fachliteratur schnell auf Rechnung geliefert. Fachbuchhandlung Lehmanns, online seit 1993

Visit lehmanns.de

Key Findings

We analyzed Lehmanns.de page load time and found that the first response time was 390 ms and then it took 12.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

lehmanns.de performance score

45

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.6 s

13/100

10%

LCP (Largest Contentful Paint)

Value8.8 s

1/100

25%

SI (Speed Index)

Value6.0 s

46/100

10%

TBT (Total Blocking Time)

Value410 ms

67/100

30%

CLS (Cumulative Layout Shift)

Value0.031

100/100

15%

TTI (Time to Interactive)

Value8.5 s

38/100

10%

Network Requests Diagram

lehmanns.de

390 ms

www.lehmanns.de

701 ms

min

1441 ms

min

575 ms

doppelbox.css

3367 ms

Our browser made a total of 66 requests to load all elements on the main page. We found that 91% of them (60 requests) were addressed to the original Lehmanns.de, 9% (6 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (8.7 sec) belongs to the original domain Lehmanns.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 121.3 kB (15%)

Content Size

830.8 kB

After Optimization

709.5 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Lehmanns.de main page is 830.8 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. 30% of websites need less resources to load. Images take 706.5 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 69.1 kB

  • Original 84.5 kB
  • After minification 78.2 kB
  • After compression 15.5 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 69.1 kB or 82% of the original size.

Image Optimization

-7%

Potential reduce by 52.1 kB

  • Original 706.5 kB
  • After minification 654.4 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. Lehmanns images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 116 B

  • Original 39.7 kB
  • After minification 39.7 kB
  • After compression 39.6 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. This website has mostly compressed JavaScripts.

Requests Breakdown

Number of requests can be reduced by 13 (20%)

Requests Now

64

After Optimization

51

  • Images
  • JavaScript
  • CSS

The browser has sent 64 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Lehmanns. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

lehmanns.de

lehmanns.de

390 ms

www.lehmanns.de

www.lehmanns.de

701 ms

min

min

1441 ms

min

min

575 ms

doppelbox.css

doppelbox.css

3367 ms

doppelbox.css

doppelbox.css

2235 ms

analytics.js

analytics.js

27 ms

ga.js

ga.js

56 ms

lehmanns-header-logo.png

lehmanns-header-logo.png

114 ms

header-sprite.png

header-sprite.png

114 ms

34098176

34098176

441 ms

39787592

39787592

2457 ms

41109343

41109343

2460 ms

41201228

41201228

1443 ms

26428

26428

743 ms

2592

2592

944 ms

21982

21982

1156 ms

26418

26418

1144 ms

25108086

25108086

3458 ms

37702021

37702021

1474 ms

27163849

27163849

1749 ms

26321

26321

1676 ms

26433

26433

4986 ms

26363

26363

1958 ms

26310

26310

2167 ms

25066

25066

2158 ms

41020462

41020462

6473 ms

38364162

38364162

2376 ms

33707820

33707820

2688 ms

22754522

22754522

2655 ms

26443

26443

6990 ms

41255707

41255707

2854 ms

37048687

37048687

2886 ms

30214989

30214989

3161 ms

28703180

28703180

3085 ms

26462

26462

3283 ms

26459

26459

5464 ms

26429

26429

4853 ms

26444

26444

5655 ms

26460

26460

5164 ms

26463

26463

5297 ms

26449

26449

7471 ms

linkid.js

linkid.js

25 ms

inpage_linkid.js

inpage_linkid.js

10 ms

collect

collect

30 ms

__utm.gif

__utm.gif

27 ms

26464

26464

5497 ms

18596009

18596009

8679 ms

15586835

15586835

5369 ms

15651751

15651751

5118 ms

18701765

18701765

5161 ms

10903

10903

5114 ms

3850

3850

5054 ms

26465

26465

5548 ms

23731

23731

4956 ms

26468

26468

5234 ms

24225

24225

6222 ms

arrow_right2.gif

arrow_right2.gif

5066 ms

23113

23113

4986 ms

fshadow_header.png

fshadow_header.png

4966 ms

shadow_line.png

shadow_line.png

4855 ms

shadow_footer.png

shadow_footer.png

4870 ms

ts-badge-58.png

ts-badge-58.png

4726 ms

icons-18-white.png

icons-18-white.png

4671 ms

min

min

202 ms

min

min

199 ms

Accessibility Review

lehmanns.de accessibility score

81

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

lehmanns.de 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

lehmanns.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

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Lehmanns.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 Lehmanns.de 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

lehmanns.de

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