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Welcome to openisbn.com homepage info - get ready to check Openisbn best content for South Africa right away, or after learning these important things about openisbn.com
ISBN Search Engine is designed to help you find book information, download free ebooks, read online books and download the isbn data.
Visit openisbn.comWe analyzed Openisbn.com page load time and found that the first response time was 207 ms and then it took 2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.
openisbn.com performance score
name
value
score
weighting
Value4.3 s
18/100
10%
Value5.1 s
25/100
25%
Value5.0 s
63/100
10%
Value540 ms
54/100
30%
Value0.167
71/100
15%
Value4.8 s
79/100
10%
207 ms
34 ms
180 ms
15 ms
96 ms
Our browser made a total of 59 requests to load all elements on the main page. We found that 32% of them (19 requests) were addressed to the original Openisbn.com, 31% (18 requests) were made to Ec1.images-amazon.com and 12% (7 requests) were made to Apis.google.com. The less responsive or slowest element that took the longest time to load (615 ms) belongs to the original domain Openisbn.com.
Page size can be reduced by 290.5 kB (52%)
561.8 kB
271.3 kB
In fact, the total size of Openisbn.com main page is 561.8 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. 45% of websites need less resources to load. Javascripts take 394.9 kB which makes up the majority of the site volume.
Potential reduce by 48.5 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 48.5 kB or 69% of the original size.
Potential reduce by 19 B
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. Openisbn images are well optimized though.
Potential reduce by 242.0 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 242.0 kB or 61% of the original size.
Number of requests can be reduced by 13 (33%)
40
27
The browser has sent 40 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Openisbn. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and as a result speed up the page load time.
www.openisbn.com
207 ms
jquery.min.js
34 ms
js_counter.php
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addthis_widget.js
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logo.png
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openisbn.com accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
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
<frame> or <iframe> elements do not have a title
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
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.
openisbn.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
openisbn.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
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Openisbn.com can be misinterpreted by Google and other search engines. Our service has detected that English 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 Openisbn.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.
openisbn.com
Open Graph description is not detected on the main page of Openisbn. 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: