7.1 sec in total
168 ms
6.5 sec
379 ms
Visit img.zvab.com now to see the best up-to-date Img ZVAB content for Germany and also check out these interesting facts you probably never knew about img.zvab.com
Das ZVAB - Zentrales Verzeichnis Antiquarischer Bücher - ist seit 1996 das Online-Antiquariat für deutschsprachige Titel. Tausende von professionellen Antiquaren bieten auf ZVAB.com Millionen antiquar...
Visit img.zvab.comWe analyzed Img.zvab.com page load time and found that the first response time was 168 ms and then it took 6.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.
img.zvab.com performance score
name
value
score
weighting
Value1.6 s
93/100
10%
Value5.5 s
19/100
25%
Value2.5 s
98/100
10%
Value300 ms
78/100
30%
Value0.007
100/100
15%
Value4.6 s
82/100
10%
168 ms
205 ms
157 ms
171 ms
167 ms
Our browser made a total of 60 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Img.zvab.com, 90% (54 requests) were made to Zvab.com and 3% (2 requests) were made to Googleadservices.com. The less responsive or slowest element that took the longest time to load (1.9 sec) relates to the external source Zvab.com.
Page size can be reduced by 325.5 kB (20%)
1.6 MB
1.3 MB
In fact, the total size of Img.zvab.com 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. 25% of websites need less resources to load. Images take 1.2 MB which makes up the majority of the site volume.
Potential reduce by 54.5 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. This page needs HTML code to be minified as it can gain 16.5 kB, which is 26% 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 54.5 kB or 85% of the original size.
Potential reduce by 13.2 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. Img ZVAB images are well optimized though.
Potential reduce by 163.1 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 163.1 kB or 63% of the original size.
Potential reduce by 94.7 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. Img.zvab.com needs all CSS files to be minified and compressed as it can save up to 94.7 kB or 82% of the original size.
Number of requests can be reduced by 20 (36%)
56
36
The browser has sent 56 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Img ZVAB. 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 from 4 to 1 for CSS and as a result speed up the page load time.
img.zvab.com
168 ms
www.zvab.com
205 ms
pageload.js
157 ms
responsive.js
171 ms
zvab.css
167 ms
zvab-gateway.css
170 ms
sn.css
161 ms
sntemplate.css
162 ms
eluminate_zvab.js
310 ms
techprops.js
318 ms
cmdatatagutils.inc
322 ms
abe.js
563 ms
conversion.js
18 ms
mustache.min.js
386 ms
slick.min.js
387 ms
homepage.js
465 ms
sn.min2.js
472 ms
sntemplate2.js
481 ms
avatar-unterwegs.png
301 ms
loewenzahn.png
470 ms
zvab-martina.png
464 ms
kueken.jpg
611 ms
zvab-kristina.png
468 ms
ostern-kinderbuch.jpg
624 ms
zvab-valerie.png
546 ms
hasenkanone.jpg
790 ms
zvab-fabian.png
628 ms
ostern.jpg
775 ms
zvab-udo.png
703 ms
kuekentennis.jpg
932 ms
zvab-larissa.png
782 ms
simplicissimus.jpg
949 ms
scherenschnitt.jpg
1021 ms
zvab-jennifer.png
937 ms
fixfoxi.jpg
1106 ms
zvab-robert.png
950 ms
termine.jpg
1086 ms
footer-logo-zvab.gif
1101 ms
zvab-logo.gif
937 ms
abe-sprite.png
939 ms
unterwegs-berlin-3.jpg
1878 ms
umberto-eco.png
1317 ms
circle-right.svg
1085 ms
archiv.png
1392 ms
harper-lee.png
1326 ms
story-osterpostkarten.jpg
1335 ms
feature-tile-berlindale2.jpg
1415 ms
slash-tile-bg.png
1619 ms
xylothek-story-tile.jpg
1610 ms
icon-twitter.png
1458 ms
icon-facebook.png
1437 ms
at.png
1609 ms
65 ms
arrow-left.png
1369 ms
arrow-right.png
1419 ms
loading.gif
1524 ms
42 ms
43 ms
cm
45 ms
timer.gif
157 ms
img.zvab.com accessibility score
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
[aria-hidden="true"] elements contain focusable descendents
[aria-*] attributes are not valid or misspelled
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
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
Links do not have a discernible name
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
img.zvab.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Missing source maps for large first-party JavaScript
img.zvab.com SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
robots.txt is not valid
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
Document uses legible font sizes
Tap targets are not sized appropriately
DE
DE
ISO-8859-1
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Img.zvab.com 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 Img.zvab.com main page’s claimed encoding is iso-8859-1. 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.
img.zvab.com
Open Graph description is not detected on the main page of Img ZVAB. 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: