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About Website

Welcome to piano4u.vn homepage info - get ready to check PIANO 4u best content right away, or after learning these important things about piano4u.vn

Piano4u cung cấp các dịch vụ về đàn piano như sửa chữa, mua bán,vận chuyển toàn quốc. Với đội ngũ thợ kỹ thuật lành nghề ...

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name

value

score

weighting

FCP (First Contentful Paint)

Value5.8 s

5/100

10%

LCP (Largest Contentful Paint)

Value8.9 s

1/100

25%

SI (Speed Index)

Value13.7 s

2/100

10%

TBT (Total Blocking Time)

Value580 ms

51/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value9.6 s

29/100

10%

piano4u.vn

1350 ms

style.css

665 ms

jquery-1.10.1.js

2577 ms

jcarousellite_1.0.1c4.js

985 ms

prefixfree-1.0.7.js

679 ms

Our browser made a total of 34 requests to load all elements on the main page. We found that 94% of them (32 requests) were addressed to the original Piano4u.vn, 6% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (2.6 sec) belongs to the original domain Piano4u.vn.

Content Size

569.5 kB

After Optimization

259.8 kB

In fact, the total size of Piano4u.vn main page is 569.5 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. 20% of websites need less resources to load. Javascripts take 332.9 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 22.0 kB

Original 26.2 kB
After minification 24.2 kB
After compression 4.2 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 22.0 kB or 84% of the original size.

Image Optimization

-6%

Potential reduce by 12.1 kB

Original 201.2 kB
After minification 189.1 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. PIANO 4u images are well optimized though.

JavaScript Optimization

-81%

Potential reduce by 268.0 kB

Original 332.9 kB
After minification 204.6 kB
After compression 64.9 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 268.0 kB or 81% of the original size.

CSS Optimization

-83%

Potential reduce by 7.6 kB

Original 9.2 kB
After minification 8.1 kB
After compression 1.6 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. Piano4u.vn needs all CSS files to be minified and compressed as it can save up to 7.6 kB or 83% of the original size.

Requests Now

After Optimization

The browser has sent 33 CSS, Javascripts, AJAX and image requests in order to completely render the main page of PIANO 4u. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts 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 items highlight common accessibility best practices.

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

Search Engine Optimization Advices

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

High

Links are not crawlable

Language and Encoding

Language Detected

VI
Language Claimed

VI
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Piano4u.vn 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 Piano4u.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

piano4u.vn

Open Graph data is detected on the main page of PIANO 4u. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook:

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Performance

Accessibility

Best Practices

SEO

PIANO FOR YOU -【 SỬA ĐÀN PIANO 】 0888 33 00 26

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)