Access vister-laser.com. 佛山顺德激光打标加工，容桂黄圃南头大岑激光镭射加工厂，佛山顺德塑料激光镭射打码机厂家，激光焊接机，激光切割机,激光配件维修，大族激光配件

name

value

score

weighting

FCP (First Contentful Paint)

Value1.8 s

90/100

10%

LCP (Largest Contentful Paint)

Value8.1 s

2/100

25%

SI (Speed Index)

Value11.1 s

5/100

10%

TBT (Total Blocking Time)

Value20 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.097

90/100

15%

TTI (Time to Interactive)

Value2.6 s

98/100

10%

vister-laser.com

1350 ms

style.css

679 ms

common.css

912 ms

jquery.min.js

1590 ms

functions.js

1152 ms

Our browser made a total of 88 requests to load all elements on the main page. We found that all of those requests were addressed to Vister-laser.com and no external sources were called. The less responsive or slowest element that took the longest time to load (11.6 sec) belongs to the original domain Vister-laser.com.

Content Size

4.0 MB

After Optimization

3.8 MB

In fact, the total size of Vister-laser.com main page is 4.0 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. 20% of websites need less resources to load. Images take 3.9 MB which makes up the majority of the site volume.

HTML Optimization

-90%

Potential reduce by 60.8 kB

Original 67.4 kB
After minification 66.8 kB
After compression 6.5 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 60.8 kB or 90% of the original size.

Image Optimization

-3%

Potential reduce by 128.9 kB

Original 3.9 MB
After minification 3.8 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. Vister Laser images are well optimized though.

JavaScript Optimization

-32%

Potential reduce by 18.9 kB

Original 60.1 kB
After minification 60.0 kB
After compression 41.1 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 18.9 kB or 32% of the original size.

CSS Optimization

-33%

Potential reduce by 2.1 kB

Original 6.3 kB
After minification 6.3 kB
After compression 4.2 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. Vister-laser.com needs all CSS files to be minified and compressed as it can save up to 2.1 kB or 33% of the original size.

Requests Now

After Optimization

The browser has sent 87 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vister Laser. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 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

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

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

High

Links are not crawlable

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

ZH
Language Claimed

N/A
Encoding

GB2312

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Vister-laser.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 Vister-laser.com main page’s claimed encoding is gb2312. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

vister-laser.com

Open Graph description is not detected on the main page of Vister Laser. 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

佛山顺德激光打标加工，容桂黄圃南头大岑激光镭射加工厂，佛山顺德塑料激光镭射打码机厂家，激光焊接机，激光切割机,激光配件维修，大族激光配件

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

vister-laser.com

style.css

common.css

jquery.min.js

functions.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

vister-laser.com

style.css

common.css

jquery.min.js

functions.js

FocusSlide.js

ScrollPic.js

iepngfix_tilebg.js

TabShow.js

head_bg.jpg

2018738047.png

nav_bg1.jpg

focus_bg.jpg

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box_bg1.jpg

nav_bg1.jpg

more.png

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title_icon1.jpg

join.jpg

webqq.gif

lop1.gif

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lop2.gif

20177110456.bmp

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