Access kissscience.tw. Kiss Science

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4

Performance

Renders faster than
20% of other websites
53

Accessibility

Visual factors better than
that of 22% of websites
67

Best Practices

More advanced features
available than in
24% of websites
75

SEO

Google-friendlier than
32% of websites

First Response

663 ms

Resources Loaded

25.5 sec

Page Rendered

487 ms

kissscience.tw screenshot

About Website

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Kiss Science

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Key Findings

We analyzed Kissscience.tw page load time and found that the first response time was 663 ms and then it took 26 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster.

name

value

score

weighting

FCP (First Contentful Paint)

Value8.1 s

0/100

10%

LCP (Largest Contentful Paint)

Value17.8 s

0/100

25%

SI (Speed Index)

Value24.9 s

0/100

10%

TBT (Total Blocking Time)

Value4,510 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.382

27/100

15%

TTI (Time to Interactive)

Value25.0 s

0/100

10%

kissscience.tw

663 ms

kissscience.tw

7537 ms

motion.css

1346 ms

validate.js

770 ms

jquery.min.js

1156 ms

Our browser made a total of 310 requests to load all elements on the main page. We found that 94% of them (292 requests) were addressed to the original Kissscience.tw, 2% (6 requests) were made to Youtube.com and 1% (4 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (7.5 sec) belongs to the original domain Kissscience.tw.

Content Size

28.5 MB

After Optimization

24.7 MB

In fact, the total size of Kissscience.tw main page is 28.5 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. Only a small number of websites need less resources to load. Images take 27.5 MB which makes up the majority of the site volume.

HTML Optimization

-93%

Potential reduce by 456.4 kB

Original 490.9 kB
After minification 458.3 kB
After compression 34.5 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 456.4 kB or 93% of the original size.

Image Optimization

-11%

Potential reduce by 3.1 MB

Original 27.5 MB
After minification 24.3 MB

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, Kiss Science needs image optimization as it can save up to 3.1 MB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-37%

Potential reduce by 126.6 kB

Original 345.0 kB
After minification 325.3 kB
After compression 218.4 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 126.6 kB or 37% of the original size.

CSS Optimization

-63%

Potential reduce by 140.7 kB

Original 222.1 kB
After minification 183.8 kB
After compression 81.5 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. Kissscience.tw needs all CSS files to be minified and compressed as it can save up to 140.7 kB or 63% of the original size.

Requests Now

299

After Optimization

271

The browser has sent 299 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Kiss Science. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and from 8 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

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

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

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

High

Links do not have descriptive text

High

Image elements do not have [alt] attributes

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

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 Kissscience.tw 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 Kissscience.tw 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

kissscience.tw

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