Access tailieuso.ntt.edu.vn. Danh mục tài liệu - Thư viện số Trường Đại Học Nguyễn Tất Thành

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

44/100

10%

LCP (Largest Contentful Paint)

Value7.6 s

3/100

25%

SI (Speed Index)

Value4.6 s

71/100

10%

TBT (Total Blocking Time)

Value130 ms

96/100

30%

CLS (Cumulative Layout Shift)

Value0.011

100/100

15%

TTI (Time to Interactive)

Value7.5 s

47/100

10%

tailieuso.ntt.edu.vn

1564 ms

css

19 ms

generalnew.css

512 ms

tp_3col_defaultnew.css

514 ms

schoolnew.css

515 ms

Our browser made a total of 58 requests to load all elements on the main page. We found that 66% of them (38 requests) were addressed to the original Tailieuso.ntt.edu.vn, 22% (13 requests) were made to Embed.tawk.to and 7% (4 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (1.8 sec) belongs to the original domain Tailieuso.ntt.edu.vn.

Content Size

707.7 kB

After Optimization

572.3 kB

In fact, the total size of Tailieuso.ntt.edu.vn main page is 707.7 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. 50% of websites need less resources to load. Images take 375.1 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 85.5 kB

Original 102.4 kB
After minification 89.4 kB
After compression 16.8 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. This page needs HTML code to be minified as it can gain 13.0 kB, which is 13% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 85.5 kB or 84% of the original size.

Image Optimization

-3%

Potential reduce by 10.2 kB

Original 375.1 kB
After minification 364.8 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. Tailieuso Ntt images are well optimized though.

JavaScript Optimization

-18%

Potential reduce by 39.2 kB

Original 217.1 kB
After minification 217.1 kB
After compression 177.9 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 39.2 kB or 18% of the original size.

CSS Optimization

-4%

Potential reduce by 465 B

Original 13.2 kB
After minification 13.2 kB
After compression 12.7 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. Tailieuso.ntt.edu.vn has all CSS files already compressed.

Requests Now

After Optimization

The browser has sent 52 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tailieuso Ntt. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve the interpretation of your content by users in different locales.

High

<html> element does not have a [lang] attribute

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.

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

High

Page is blocked from indexing

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

Language and Encoding

Language Detected

VI
Language Claimed

N/A
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Tailieuso.ntt.edu.vn 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 Tailieuso.ntt.edu.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.

Social Sharing Optimization

tailieuso.ntt.edu.vn

Open Graph description is not detected on the main page of Tailieuso Ntt. 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:

Report Summary

Performance

Accessibility

Best Practices

SEO

Danh mục tài liệu - Thư viện số Trường Đại Học Nguyễn Tất Thành

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

tailieuso.ntt.edu.vn

css

generalnew.css

tp_3col_defaultnew.css

schoolnew.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

tailieuso.ntt.edu.vn

css

generalnew.css

tp_3col_defaultnew.css

schoolnew.css

popup.css

jquery-1.2.6.js

common.js

ajax_core.js

caobox.js

opac.jpg

banner5.jpg

hom4.png

board.png

6091363692081.jpg

ntt_1413428483.jpg

1184962_3410.jpg

1432067189.jpg

284071171.jpg

647540000.jpg

761617051.jpg

520841697.jpg

667888771.jpg

1360433353.jpg

1499205965.jpg

1868231880.jpg

1579430178.jpg

97799756.jpg

1898936820.jpg

paginate_pre.gif

paginate_next.gif

huong-dan_thuvienbrvt.png

ntt_1413423901.jpg

ntt_1413431130.jpg

ntt_1413423040.jpg

ntt_1413443960.jpg

ntt_1413455250.jpg

dlib.png

bg_bottom_194x3.gif

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