4.1 sec in total
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3.3 sec
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Click here to check amazing 123 Tailieufree content for Vietnam. Otherwise, check out these important facts you probably never knew about 123tailieufree.com
Tài liệu miễn phí, thư viện học tập, chuyên luận văn luận án, khóa luận tốt nghiệp, tài liệu ôn thi ĐH -CĐ
Visit 123tailieufree.comWe analyzed 123tailieufree.com page load time and found that the first response time was 269 ms and then it took 3.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
123tailieufree.com performance score
name
value
score
weighting
Value2.8 s
57/100
10%
Value5.2 s
24/100
25%
Value2.9 s
95/100
10%
Value510 ms
57/100
30%
Value0.122
84/100
15%
Value11.6 s
18/100
10%
269 ms
623 ms
67 ms
142 ms
184 ms
Our browser made a total of 156 requests to load all elements on the main page. We found that 10% of them (15 requests) were addressed to the original 123tailieufree.com, 33% (52 requests) were made to Lh4.googleusercontent.com and 9% (14 requests) were made to 4.bp.blogspot.com. The less responsive or slowest element that took the longest time to load (841 ms) relates to the external source Lib.hutech.edu.vn.
Page size can be reduced by 546.1 kB (26%)
2.1 MB
1.6 MB
In fact, the total size of 123tailieufree.com main page is 2.1 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. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 1.3 MB which makes up the majority of the site volume.
Potential reduce by 139.8 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 139.8 kB or 75% of the original size.
Potential reduce by 22.1 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. 123 Tailieufree images are well optimized though.
Potential reduce by 365.9 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 365.9 kB or 61% of the original size.
Potential reduce by 18.3 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. 123tailieufree.com needs all CSS files to be minified and compressed as it can save up to 18.3 kB or 60% of the original size.
Number of requests can be reduced by 46 (32%)
144
98
The browser has sent 144 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 123 Tailieufree. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 27 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.
123tailieufree.com
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123tailieufree.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.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
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
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
Image elements do not have [alt] attributes
Links do not have a discernible name
123tailieufree.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
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Issues were logged in the Issues panel in Chrome Devtools
123tailieufree.com SEO score
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
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 123tailieufree.com can be misinterpreted by Google and other search engines. Our service has detected that Vietnamese 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 123tailieufree.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.
123tailieufree.com
Open Graph description is not detected on the main page of 123 Tailieufree. 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: