Access calculus.yuyumagic424.net. 微積分福音 | 清楚好懂的微積分教學

name

value

score

weighting

FCP (First Contentful Paint)

Value6.9 s

1/100

10%

LCP (Largest Contentful Paint)

Value16.9 s

0/100

25%

SI (Speed Index)

Value18.5 s

0/100

10%

TBT (Total Blocking Time)

Value3,370 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0.063

97/100

15%

TTI (Time to Interactive)

Value21.7 s

1/100

10%

calculus.yuyumagic424.net

1626 ms

style.css

231 ms

quicklatex-format.css

202 ms

polls-css.css

226 ms

jetpack.css

271 ms

Our browser made a total of 137 requests to load all elements on the main page. We found that 26% of them (36 requests) were addressed to the original Calculus.yuyumagic424.net, 7% (10 requests) were made to V3.jiathis.com and 7% (10 requests) were made to Ajax.googleapis.com. The less responsive or slowest element that took the longest time to load (3.8 sec) relates to the external source V3.jiathis.com.

Content Size

1.6 MB

After Optimization

550.6 kB

In fact, the total size of Calculus.yuyumagic424.net main page is 1.6 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. 65% of websites need less resources to load. Javascripts take 889.0 kB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 244.1 kB

Original 276.1 kB
After minification 273.2 kB
After compression 32.0 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 244.1 kB or 88% of the original size.

Image Optimization

-18%

Potential reduce by 52.3 kB

Original 290.0 kB
After minification 237.7 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. Obviously, Calculus Yuyumagic 424 needs image optimization as it can save up to 52.3 kB or 18% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-71%

Potential reduce by 630.8 kB

Original 889.0 kB
After minification 870.7 kB
After compression 258.2 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 630.8 kB or 71% of the original size.

CSS Optimization

-84%

Potential reduce by 121.5 kB

Original 144.2 kB
After minification 131.9 kB
After compression 22.7 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. Calculus.yuyumagic424.net needs all CSS files to be minified and compressed as it can save up to 121.5 kB or 84% of the original size.

Requests Now

122

After Optimization

The browser has sent 122 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Calculus Yuyumagic 424. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 49 to 1 for JavaScripts and from 12 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 semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

High

<frame> or <iframe> elements do not have a title

High

Links do not have a discernible name

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

High

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

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

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

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

High

Tap targets are not sized appropriately

Language and Encoding

Language Detected

N/A
Language Claimed

ZH
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Calculus.yuyumagic424.net can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is Chinese. Our system also found out that Calculus.yuyumagic424.net 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

calculus.yuyumagic424.net

Open Graph description is not detected on the main page of Calculus Yuyumagic 424. 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

微積分福音 | 清楚好懂的微積分教學

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

calculus.yuyumagic424.net

style.css

quicklatex-format.css

polls-css.css

jetpack.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

calculus.yuyumagic424.net

style.css

quicklatex-format.css

polls-css.css

jetpack.css

prototype.js

scriptaculous.js

effects.js

lightbox.js

jquery.js

jquery-migrate.min.js

jquery.hoverIntent.minified.js

jquery.cookie.js

jquery.dcjqaccordion.2.9.js

wp-quicklatex-frontend.js

dcverticalmegamenu.css

skin.php

shareaholic.js

18831f7bfedc9a17dd01c5a9c6d13789.json

ga.js

builder.js

effects.js

dragdrop.js

controls.js

slider.js

sound.js

__utm.gif

jiathis_r.js

photon.js

polls-js.js

devicepx-jetpack.js

gprofiles.js

wpgroho.js

jquery.dcverticalmegamenu.1.3.js

e-201611.js

js

lightbox.css

%E6%9C%AA%E5%91%BD%E5%90%8D-2.png

likebox.php

button_rss.png

button_go.gif

firestats-icon-small.png

shrMain.min.js