Tools & Wizards About Us
validcreditcardnumber.com screenshot

Report Summary

  • 50

    Performance

    Renders faster than
    68% of other websites

  • 82

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 89

    SEO

    Google-friendlier than
    67% of websites

validcreditcardnumber.com

Check Credit Card Numbers | Validate your credit card number with our free online checker

Page Load Speed

499 ms in total

First Response

74 ms

Resources Loaded

299 ms

Page Rendered

126 ms

validcreditcardnumber.com screenshot

About Website

Click here to check amazing Valid Credit Card Number content for Vietnam. Otherwise, check out these important facts you probably never knew about validcreditcardnumber.com

Check credit card numbers. Validate your credit card number and find out which bank a card number belongs to.

Visit validcreditcardnumber.com

Key Findings

We analyzed Validcreditcardnumber.com page load time and found that the first response time was 74 ms and then it took 425 ms to load all DOM resources and completely render a web page. This is an excellent result, as only 5% of websites can load faster.

Performance Metrics

validcreditcardnumber.com performance score

50

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.7 s

92/100

10%

LCP (Largest Contentful Paint)

Value1.7 s

99/100

25%

SI (Speed Index)

Value4.7 s

68/100

10%

TBT (Total Blocking Time)

Value3,430 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0.295

40/100

15%

TTI (Time to Interactive)

Value10.0 s

26/100

10%

Network Requests Diagram

www.validcreditcardnumber.com

74 ms

prettify.css

25 ms

bootstrap.min.css

48 ms

custom.css

41 ms

adsbygoogle.js

24 ms

Our browser made a total of 20 requests to load all elements on the main page. We found that 70% of them (14 requests) were addressed to the original Validcreditcardnumber.com, 10% (2 requests) were made to Pagead2.googlesyndication.com and 10% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (81 ms) relates to the external source Google-analytics.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 167.2 kB (51%)

Content Size

327.9 kB

After Optimization

160.7 kB

  • HTML
  • JavaScript
  • CSS

In fact, the total size of Validcreditcardnumber.com main page is 327.9 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 25% of websites need less resources to load. Javascripts take 185.0 kB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 13.5 kB

  • Original 18.7 kB
  • After minification 18.7 kB
  • After compression 5.2 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 13.5 kB or 72% of the original size.

JavaScript Optimization

-27%

Potential reduce by 50.1 kB

  • Original 185.0 kB
  • After minification 184.9 kB
  • After compression 134.9 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 50.1 kB or 27% of the original size.

CSS Optimization

-83%

Potential reduce by 103.6 kB

  • Original 124.2 kB
  • After minification 124.1 kB
  • After compression 20.6 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. Validcreditcardnumber.com needs all CSS files to be minified and compressed as it can save up to 103.6 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 6 (33%)

Requests Now

18

After Optimization

12

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 18 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Valid Credit Card Number. 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.

Network Requests Diagram

www.validcreditcardnumber.com

www.validcreditcardnumber.com

74 ms

prettify.css

prettify.css

25 ms

bootstrap.min.css

bootstrap.min.css

48 ms

custom.css

custom.css

41 ms

adsbygoogle.js

adsbygoogle.js

24 ms

jquery.min.js

jquery.min.js

31 ms

jquery.validate.min.js

jquery.validate.min.js

37 ms

bootstrap.min.js

bootstrap.min.js

42 ms

prettify.js

prettify.js

31 ms

ga.js

ga.js

81 ms

card-visa.gif

card-visa.gif

37 ms

card-mastercard.gif

card-mastercard.gif

33 ms

card-amex.gif

card-amex.gif

17 ms

card-discover.gif

card-discover.gif

33 ms

card-jcb.gif

card-jcb.gif

34 ms

card-diners.gif

card-diners.gif

34 ms

ca-pub-3959123356666261.js

ca-pub-3959123356666261.js

38 ms

zrt_lookup.html

zrt_lookup.html

43 ms

glyphicons-halflings-regular.woff

glyphicons-halflings-regular.woff

23 ms

__utm.gif

__utm.gif

18 ms

Accessibility Review

validcreditcardnumber.com accessibility score

82

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-*] attributes do not match their roles

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.

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

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

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

Best Practices

validcreditcardnumber.com best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

validcreditcardnumber.com SEO score

89

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

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

    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 Validcreditcardnumber.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 Validcreditcardnumber.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

validcreditcardnumber.com

Open Graph description is not detected on the main page of Valid Credit Card Number. 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: