179 ms in total
10 ms
108 ms
61 ms
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Visit zbib.orgWe analyzed Zbib.org page load time and found that the first response time was 10 ms and then it took 169 ms to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster.
zbib.org performance score
name
value
score
weighting
Value3.9 s
25/100
10%
Value4.7 s
32/100
25%
Value3.9 s
82/100
10%
Value860 ms
33/100
30%
Value0.383
27/100
15%
Value5.9 s
66/100
10%
10 ms
30 ms
9 ms
25 ms
Our browser made a total of 4 requests to load all elements on the main page. We found that all of those requests were addressed to Zbib.org and no external sources were called. The less responsive or slowest element that took the longest time to load (30 ms) belongs to the original domain Zbib.org.
Page size can be reduced by 787 B (0%)
349.5 kB
348.7 kB
In fact, the total size of Zbib.org main page is 349.5 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only 5% of websites need less resources to load. Javascripts take 337.4 kB which makes up the majority of the site volume.
Potential reduce by 776 B
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 776 B or 57% of the original size.
Potential reduce by 0 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.
Potential reduce by 11 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. Zbib.org has all CSS files already compressed.
We found no issues to fix!
2
2
The browser has sent 2 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Z Bib. According to our analytics all requests are already optimized.
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{{time}} ms
zbib.org 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
Image elements do not have [alt] attributes
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
zbib.org best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Missing source maps for large first-party JavaScript
zbib.org SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
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
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
Document uses legible font sizes
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zbib.org can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Zbib.org 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.
{{og_description}}
zbib.org
Open Graph description is not detected on the main page of Z Bib. 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: