Tools & Wizards About Us
opba.vn screenshot

Report Summary

  • 18

    Performance

    Renders faster than
    34% of other websites

  • 57

    Accessibility

    Visual factors better than
    that of 24% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 84

    SEO

    Google-friendlier than
    52% of websites

opba.vn

Shop chuyên Bao da - Ốp lưng điện thoại chính hãng #1

Page Load Speed

24.1 sec in total

First Response

956 ms

Resources Loaded

20.7 sec

Page Rendered

2.5 sec

opba.vn screenshot

About Website

Visit opba.vn now to see the best up-to-date Opba content for Vietnam and also check out these interesting facts you probably never knew about opba.vn

Shop vỏ ốp lưng bao da và phụ kiện điện thoại di động sỉ lẻ giá rẻ tốt nhất. Sản phẩm chính hãng chất lượng cao mới nhất độc đáo 100%

Visit opba.vn

Key Findings

We analyzed Opba.vn page load time and found that the first response time was 956 ms and then it took 23.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.

Performance Metrics

opba.vn performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

27/100

10%

LCP (Largest Contentful Paint)

Value13.9 s

0/100

25%

SI (Speed Index)

Value8.8 s

16/100

10%

TBT (Total Blocking Time)

Value1,320 ms

17/100

30%

CLS (Cumulative Layout Shift)

Value0.25

49/100

15%

TTI (Time to Interactive)

Value15.0 s

8/100

10%

Network Requests Diagram

opba.vn

956 ms

opba.vn

4976 ms

jquery-ui-1.10.2.custom.min.css

1176 ms

font-awesome.min.css

853 ms

jquery.lightbox-0.5.css

864 ms

Our browser made a total of 254 requests to load all elements on the main page. We found that 92% of them (234 requests) were addressed to the original Opba.vn, 2% (4 requests) were made to Fonts.gstatic.com and 1% (3 requests) were made to Connect.facebook.net. The less responsive or slowest element that took the longest time to load (9.3 sec) belongs to the original domain Opba.vn.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.5 MB (10%)

Content Size

14.7 MB

After Optimization

13.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Opba.vn main page is 14.7 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. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 13.9 MB which makes up the majority of the site volume.

HTML Optimization

-90%

Potential reduce by 201.0 kB

  • Original 224.0 kB
  • After minification 203.7 kB
  • After compression 23.0 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 201.0 kB or 90% of the original size.

Image Optimization

-9%

Potential reduce by 1.2 MB

  • Original 13.9 MB
  • After minification 12.7 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. Opba images are well optimized though.

JavaScript Optimization

-15%

Potential reduce by 88.6 kB

  • Original 596.8 kB
  • After minification 596.8 kB
  • After compression 508.2 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 88.6 kB or 15% of the original size.

CSS Optimization

-5%

Potential reduce by 992 B

  • Original 21.5 kB
  • After minification 21.5 kB
  • After compression 20.5 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. Opba.vn has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 27 (11%)

Requests Now

246

After Optimization

219

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 246 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Opba. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 23 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

opba.vn

opba.vn

956 ms

opba.vn

opba.vn

4976 ms

jquery-ui-1.10.2.custom.min.css

jquery-ui-1.10.2.custom.min.css

1176 ms

font-awesome.min.css

font-awesome.min.css

853 ms

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jquery.lightbox-0.5.css

864 ms

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858 ms

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Accessibility Review

opba.vn accessibility score

57

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

High

ARIA IDs are not unique

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Internationalization and localization

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

Impact

Issue

High

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

Names and labels

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.

Impact

Issue

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

opba.vn best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

opba.vn SEO score

84

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

Mobile Friendly

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/).

Impact

Issue

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    VI

  • Language Claimed

    N/A

  • Encoding

    UTF-8

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

opba.vn

Open Graph description is not detected on the main page of Opba. 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: