5.9 sec in total
1.2 sec
4.2 sec
534 ms
Welcome to doctailieu.com homepage info - get ready to check Doctailieu best content for Vietnam right away, or after learning these important things about doctailieu.com
DOCTAILIEU.COM là một thư viện online chia sẻ tài liệu miễn phí nhiều lĩnh vực như: hướng dẫn học tập, giáo án bài giảng, đề thi đáp án, biểu mẫu, tử vi...hữu ích cho bạn.
Visit doctailieu.comWe analyzed Doctailieu.com page load time and found that the first response time was 1.2 sec and then it took 4.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.
doctailieu.com performance score
name
value
score
weighting
Value4.1 s
21/100
10%
Value4.6 s
35/100
25%
Value10.8 s
7/100
10%
Value1,500 ms
14/100
30%
Value0.266
46/100
15%
Value20.5 s
2/100
10%
1226 ms
126 ms
98 ms
146 ms
77 ms
Our browser made a total of 66 requests to load all elements on the main page. We found that 20% of them (13 requests) were addressed to the original Doctailieu.com, 15% (10 requests) were made to Cdn.lichngaytot.com and 11% (7 requests) were made to Google.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Doctailieu.com.
Page size can be reduced by 488.4 kB (35%)
1.4 MB
915.4 kB
In fact, the total size of Doctailieu.com main page is 1.4 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. 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. Javascripts take 997.0 kB which makes up the majority of the site volume.
Potential reduce by 133.7 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 133.7 kB or 81% of the original size.
Potential reduce by 22.7 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. Doctailieu images are well optimized though.
Potential reduce by 328.6 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 328.6 kB or 33% of the original size.
Potential reduce by 3.3 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. Doctailieu.com needs all CSS files to be minified and compressed as it can save up to 3.3 kB or 32% of the original size.
Number of requests can be reduced by 32 (52%)
61
29
The browser has sent 61 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Doctailieu. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 33 to 1 for JavaScripts and as a result speed up the page load time.
doctailieu.com
1226 ms
cse.js
126 ms
js
98 ms
js
146 ms
ez1k2vxm4b
77 ms
ats.js
326 ms
adsbygoogle.js
123 ms
doctailieu.min.js
579 ms
jquery.validate.min.js
835 ms
jquery.unobtrusive-ajax.min.js
837 ms
jquery.validate.unobtrusive.min.js
834 ms
client
121 ms
firebase-app.js
72 ms
firebase-messaging.js
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firebase-analytics.js
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firebase-init.js
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appleid.auth.js
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clarity.js
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analytics.js
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js
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cse_element__vi.js
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default+vi.css
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default.css
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collect
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gpt.js
193 ms
prebid_2023_8_28_11_48_3.js
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apstag.js
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doc-tai-lieu-logo.svg
565 ms
arow.svg
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down3.svg
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vector.svg
1459 ms
show_ads_impl.js
182 ms
zrt_lookup.html
120 ms
fa-light-300.woff
1636 ms
fa-solid-900.woff
1462 ms
collect
75 ms
all.js
134 ms
navive-advs-10.html
213 ms
fa-brands-400.woff
1194 ms
ga-audiences
73 ms
pubads_impl.js
78 ms
all.js
70 ms
Tu-vi-tuan-moi-cua-12-cung-hoang-dao-291---422024-Cu-Giai-binh-yen,-Thien-Binh-tranh-cai.jpg
183 ms
Js
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v84a3a4012de94ce1a686ba8c167c359c1696973893317
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Tu-vi-th%C3%BA-2-ngay-2912024-cua-12-cung-hoang-dao-Su-Tu-ca-tin,-Thien-Binh-tich-cuc.jpg
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Con-so-may-man-hom-nay-2912024-theo-nam-sinh-Xem-so-TOT-giup-ban-de-DON-LOC.jpg
519 ms
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Tu-vi-tuan-moi-cua-12-con-giap-tu-291-%E2%80%93-422024-Mao-gap-tro-ngai,-Tuat-lao-dao.jpg
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Van-dung-ngay-5-ban-ron,-1-nhan-roi-de-SONG-CAN-BANG,-tan-huong-hanh-phuc.jpg
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Nhung-nghiep-quyet-dinh-su-tai-sinh-cua-chung-ta-Cai-nao-quan-trong-nhat.jpg
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Tu-duy-khac-biet-cua-cac-ty-phu-tuong-vo-ly-nhung-dam-bao-cho-su-giau-co-ben-vung.jpg
513 ms
Lam-gi-de-tai-sinh-lam-nguoi-Than-mang-dang-quy-dung-lang-phi-no!.jpg
515 ms
ads
230 ms
420 ms
async-ads.js
254 ms
branding.png
247 ms
nav_logo114.png
203 ms
slotcar_library.js
166 ms
sodar
25 ms
sodar2.js
28 ms
runner.html
5 ms
aframe
32 ms
IHSjRKKj3q_1Pt3c2sGWHmUCy_Bw5n5yhKh9CWyZSw4.js
4 ms
c.gif
16 ms
doctailieu.com accessibility score
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-*] attributes do not match their roles
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
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.
doctailieu.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
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
doctailieu.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
VI
VI
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Doctailieu.com can be misinterpreted by Google and other search engines. Our service has detected that Vietnamese is used on the page, and it matches the claimed language. Our system also found out that Doctailieu.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.
doctailieu.com
Open Graph description is not detected on the main page of Doctailieu. 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: