Access tan8.com. 《弹琴吧》钢琴谱大全，吉他谱大全，吉他入门零基础，学钢琴，学吉他，就来弹琴吧弹吧

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

36/100

10%

LCP (Largest Contentful Paint)

Value10.1 s

0/100

25%

SI (Speed Index)

Value6.6 s

37/100

10%

TBT (Total Blocking Time)

Value170 ms

93/100

30%

CLS (Cumulative Layout Shift)

Value0.51

15/100

15%

TTI (Time to Interactive)

Value6.1 s

63/100

10%

tan8.com

1658 ms

www.tan8.com

4969 ms

header.css

798 ms

jq1.7.js

3737 ms

jquery.emoji.js

1096 ms

Our browser made a total of 109 requests to load all elements on the main page. We found that 39% of them (42 requests) were addressed to the original Tan8.com, 36% (39 requests) were made to Oss.tan8.com and 14% (15 requests) were made to Videooss.tan8.com. The less responsive or slowest element that took the longest time to load (20.3 sec) relates to the external source Oss.tan8.com.

Content Size

999.8 kB

After Optimization

740.6 kB

In fact, the total size of Tan8.com main page is 999.8 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. 35% of websites need less resources to load. Images take 737.6 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 68.1 kB

Original 82.3 kB
After minification 66.6 kB
After compression 14.2 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. This page needs HTML code to be minified as it can gain 15.7 kB, which is 19% 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 68.1 kB or 83% of the original size.

Image Optimization

-9%

Potential reduce by 68.1 kB

Original 737.6 kB
After minification 669.6 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. Tan 8 images are well optimized though.

JavaScript Optimization

-67%

Potential reduce by 104.8 kB

Original 156.3 kB
After minification 150.0 kB
After compression 51.5 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 104.8 kB or 67% of the original size.

CSS Optimization

-77%

Potential reduce by 18.3 kB

Original 23.6 kB
After minification 20.2 kB
After compression 5.4 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. Tan8.com needs all CSS files to be minified and compressed as it can save up to 18.3 kB or 77% of the original size.

Requests Now

After Optimization

The browser has sent 84 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tan 8. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 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 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

Links do not have a discernible name

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

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

Search Engine Optimization Advices

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

High

Image elements do not have [alt] attributes

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/).

High

Document uses legible font sizes

Language and Encoding

Language Detected

ZH
Language Claimed

N/A
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Tan8.com can be misinterpreted by Google and other search engines. Our service has detected that Chinese 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 Tan8.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.

Social Sharing Optimization

tan8.com

Open Graph description is not detected on the main page of Tan 8. 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

《弹琴吧》钢琴谱大全，吉他谱大全，吉他入门零基础，学钢琴，学吉他，就来弹琴吧弹吧

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

tan8.com

www.tan8.com

header.css

jq1.7.js

jquery.emoji.js

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

tan8.com

www.tan8.com

header.css

jq1.7.js

jquery.emoji.js

style_index.css

banner.js

water.js

footer.css

search.js

stat.php

tan8_web_banner20160315140133.jpg

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icon_search.png

left.png

right.png

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bannermask.png

bannerTextPoint.png

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bottom_app.jpg

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