19.2 sec in total
1.6 sec
17 sec
633 ms
Visit alphabooks.vn now to see the best up-to-date Alpha Books content for Vietnam and also check out these interesting facts you probably never knew about alphabooks.vn
Công ty cổ phần Sách Alpha (gọi tắt là Alpha Books) do một nhóm trí thức trẻ thành lập ở Hà Nội năm 2005
Visit alphabooks.vnWe analyzed Alphabooks.vn page load time and found that the first response time was 1.6 sec and then it took 17.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.
alphabooks.vn performance score
name
value
score
weighting
Value5.8 s
4/100
10%
Value19.0 s
0/100
25%
Value17.7 s
0/100
10%
Value4,720 ms
0/100
30%
Value0.054
98/100
15%
Value34.1 s
0/100
10%
1602 ms
541 ms
1636 ms
541 ms
1356 ms
Our browser made a total of 159 requests to load all elements on the main page. We found that 74% of them (117 requests) were addressed to the original Alphabooks.vn, 15% (24 requests) were made to Static.xx.fbcdn.net and 8% (12 requests) were made to Scontent.xx.fbcdn.net. The less responsive or slowest element that took the longest time to load (13.9 sec) belongs to the original domain Alphabooks.vn.
Page size can be reduced by 1.1 MB (46%)
2.4 MB
1.3 MB
In fact, the total size of Alphabooks.vn main page is 2.4 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. 50% of websites need less resources to load. Images take 1.4 MB which makes up the majority of the site volume.
Potential reduce by 43.6 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 43.6 kB or 81% of the original size.
Potential reduce by 330.0 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, Alpha Books needs image optimization as it can save up to 330.0 kB or 23% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 428.3 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 428.3 kB or 73% of the original size.
Potential reduce by 287.3 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. Alphabooks.vn needs all CSS files to be minified and compressed as it can save up to 287.3 kB or 88% of the original size.
Number of requests can be reduced by 32 (21%)
155
123
The browser has sent 155 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Alpha Books. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 25 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.
alphabooks.vn
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alphabooks.vn 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
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.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
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.
alphabooks.vn 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
Browser errors were logged to the console
Missing source maps for large first-party JavaScript
alphabooks.vn 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
Tap targets are not sized appropriately
VI
VN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Alphabooks.vn can be misinterpreted by Google and other search engines. Our service has detected that Vietnamese is used on the page, and it does not match the claimed language. Our system also found out that Alphabooks.vn 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.
alphabooks.vn
Open Graph data is detected on the main page of Alpha Books. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: