4.1 sec in total
365 ms
3 sec
660 ms
Visit nnbh.com now to see the best up-to-date Nnbh content and also check out these interesting facts you probably never knew about nnbh.com
Boekverkopers sinds 1889. Ruime keuze in binnen- en buitenlandse boeken, kantoor- en hobbyartikelen en cadeaus Snelle en betrouwbare levering.
Visit nnbh.comWe analyzed Nnbh.com page load time and found that the first response time was 365 ms and then it took 3.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
nnbh.com performance score
name
value
score
weighting
Value5.7 s
5/100
10%
Value12.8 s
0/100
25%
Value14.2 s
1/100
10%
Value1,630 ms
12/100
30%
Value0
100/100
15%
Value12.9 s
13/100
10%
365 ms
528 ms
157 ms
171 ms
169 ms
Our browser made a total of 114 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Nnbh.com, 97% (111 requests) were made to Internetboekhandel.nl and 2% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (977 ms) relates to the external source Internetboekhandel.nl.
Page size can be reduced by 378.5 kB (30%)
1.3 MB
887.6 kB
In fact, the total size of Nnbh.com 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 943.4 kB which makes up the majority of the site volume.
Potential reduce by 170.4 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. 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 170.4 kB or 84% of the original size.
Potential reduce by 121.5 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, Nnbh needs image optimization as it can save up to 121.5 kB or 13% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 82.8 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 82.8 kB or 72% of the original size.
Potential reduce by 3.8 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. Nnbh.com needs all CSS files to be minified and compressed as it can save up to 3.8 kB or 75% of the original size.
Number of requests can be reduced by 4 (4%)
112
108
The browser has sent 112 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nnbh. 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 as a result speed up the page load time.
nnbh.com
365 ms
index.htm
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anylinkmenu.css
157 ms
menucontents.js
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nnbh.css
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rotateibn.js
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buy.js
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nnbh.com accessibility score
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
Buttons do not have an accessible name
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
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 IDs are not unique
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
nnbh.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
nnbh.com SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
NL
N/A
ISO-8859-1
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nnbh.com can be misinterpreted by Google and other search engines. Our service has detected that Dutch 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 Nnbh.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.
nnbh.com
Open Graph description is not detected on the main page of Nnbh. 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: