Access bvopticalglasses.com. Danyang Bright Vision Optical Eyeglasses Co.,Ltd.

name

value

score

weighting

FCP (First Contentful Paint)

Value2.6 s

64/100

10%

LCP (Largest Contentful Paint)

Value3.0 s

79/100

25%

SI (Speed Index)

Value3.8 s

84/100

10%

TBT (Total Blocking Time)

Value60 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.177

68/100

15%

TTI (Time to Interactive)

Value4.2 s

85/100

10%

bvopticalglasses.com

27 ms

bvopticalglasses.com

443 ms

css.css

41 ms

jquery.min.js

29 ms

ddsmoothmenu.js

377 ms

Our browser made a total of 57 requests to load all elements on the main page. We found that 96% of them (55 requests) were addressed to the original Bvopticalglasses.com, 2% (1 request) were made to Cdnjs.cloudflare.com and 2% (1 request) were made to S7.addthis.com. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Bvopticalglasses.com.

Content Size

1.1 MB

After Optimization

1.0 MB

In fact, the total size of Bvopticalglasses.com main page is 1.1 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. 40% of websites need less resources to load. Images take 1.0 MB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 31.8 kB

Original 37.2 kB
After minification 37.2 kB
After compression 5.4 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 31.8 kB or 86% of the original size.

Image Optimization

-4%

Potential reduce by 37.0 kB

Original 1.0 MB
After minification 1.0 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. Bv Optical Glasses images are well optimized though.

JavaScript Optimization

-16%

Potential reduce by 1.8 kB

Original 11.3 kB
After minification 11.3 kB
After compression 9.5 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 1.8 kB or 16% of the original size.

CSS Optimization

-1%

Potential reduce by 38 B

Original 5.0 kB
After minification 5.0 kB
After compression 5.0 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. Bvopticalglasses.com has all CSS files already compressed.

Requests Now

After Optimization

The browser has sent 55 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Bv Optical Glasses. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 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

Form elements do not have associated labels

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

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

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

EN
Language Claimed

N/A
Encoding

UTF-8

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

bvopticalglasses.com

Open Graph description is not detected on the main page of Bv Optical Glasses. 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

Danyang Bright Vision Optical Eyeglasses Co.,Ltd.

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

bvopticalglasses.com

bvopticalglasses.com

css.css

jquery.min.js

ddsmoothmenu.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

bvopticalglasses.com

bvopticalglasses.com

css.css

jquery.min.js

ddsmoothmenu.js

gototop.js

yu-zhi-guo-com.js

css.css

yuzhiguo_banner.css

jquery.bxslider.min.js

tj.js

addthis_widget.js

online.js

1.jpg

logo.jpg

bg_button.jpg

bg_menu.jpg

2.jpg

3.jpg

Unisex-Fashion-Mineral-Grey-Polarized-Black-and-Gold-Metal-Sunglasses-3573_0.jpg

Unisex-Fashion-Mineral-Grey-Polarized-Metal-Sunglasses-3572_0.jpg

Unisex-Aviator-Mineral-G15-Green-Polarized-Metal-Sunglasses-3569_0.jpg

Unisex-Aviator-Mineral-Polarized-Metal-Sunglasses-3567_0.jpg

Round-Unisex-Aviator-Mineral-Polarized-Metal-Sunglasses-3568_0.jpg

Butterfly-Big-Acetate-Womans-Polarized-Sunglasses-3195_0.jpg

Classic-Hand-made-Acetate-Cat-Eye-Shape-Polarized-Sunglasses-3199_0.jpg

square-thick-unisex-high-quality-polarized-sunglasses-3192_0.jpg

Round-Gradient-Polarized-Sunglasses-Unisex-Classic-Desgin-Eyewear-3203_0.jpg

Double-Bridge-Aviator-Polarized-Gradient-Grey-Brown-Sunglasses-Eyewear-3205_0.jpg

Special-Round-Metal-Designer-Sunglasses-3206_0.jpg

butterfly-acetate-and-metal-combination-prescription-spectacles-RX-optical-frames-1869-3155_0.jpg

vintage-slim-unisex-acetate-and-metal-combination-prescription-spectacles-1866-3148_0.jpg

big-thick-round-woman-acetate-and-metal-combination-optical-frames-spectacles-1865-3149_0.jpg

cat-eye-acetate-and-metal-combination-eyeglasses-frame-3151_0.jpg

Unisex-rectangel-stainless-steel-optical-frames-eyewear-3207_0.jpg

Cat-eye-Acetate-and-stainless-steel-combination-3202_0.jpg

unisex-hexagon-acetate-and-metal-combination-eyeglasses-eyewear-3210_0.jpg

Cat-eye-Acetate-and-stainless-steel-combination-eyeglasses-eyewear-3211_0.jpg

butterfly-acetate-frame-metal-temple-prescription-spectacles-eyeglasses-3209_0.jpg

Cat-Eye-Woman-Full-Rim-Metal-Frame-Acetate-temple-3223_0.jpg

cat-Eye-stainless-steel-eyeglasses-frame-3147_0.jpg

cat-Eye-stainless-steel-eyeglasses-frame-3145_0.jpg

Full-rim-man-double-bridg-spring-hinge-stainless-steel-Optical-frame-3224_0.jpg