Tools & Wizards About Us
coinb.in screenshot

Report Summary

  • 67

    Performance

    Renders faster than
    80% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 85

    SEO

    Google-friendlier than
    56% of websites

coinb.in

Bitcoin Wallet by Coinb.in

Page Load Speed

1.5 sec in total

First Response

203 ms

Resources Loaded

1.1 sec

Page Rendered

199 ms

coinb.in screenshot

About Website

Welcome to coinb.in homepage info - get ready to check Coinb best content for United Kingdom right away, or after learning these important things about coinb.in

A Bitcoin Wallet written in Javascript. Supports Multisig, SegWit, Custom Transactions, nLockTime and more!

Visit coinb.in

Key Findings

We analyzed Coinb.in page load time and found that the first response time was 203 ms and then it took 1.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Performance Metrics

coinb.in performance score

67

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.2 s

20/100

10%

LCP (Largest Contentful Paint)

Value4.3 s

42/100

25%

SI (Speed Index)

Value8.6 s

17/100

10%

TBT (Total Blocking Time)

Value70 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.002

100/100

15%

TTI (Time to Interactive)

Value4.3 s

84/100

10%

Network Requests Diagram

coinb.in

203 ms

coinb.in

52 ms

bootstrap.min.css

41 ms

bootstrap-datetimepicker.min.css

58 ms

style.css

32 ms

Our browser made a total of 26 requests to load all elements on the main page. We found that all of those requests were addressed to Coinb.in and no external sources were called. The less responsive or slowest element that took the longest time to load (414 ms) belongs to the original domain Coinb.in.

Page Optimization Overview & Recommendations

Page size can be reduced by 511.1 kB (76%)

Content Size

669.7 kB

After Optimization

158.6 kB

  • HTML
  • JavaScript
  • CSS

In fact, the total size of Coinb.in main page is 669.7 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. 35% of websites need less resources to load. Javascripts take 463.2 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 66.9 kB

  • Original 79.8 kB
  • After minification 67.2 kB
  • After compression 12.9 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. This page needs HTML code to be minified as it can gain 12.6 kB, which is 16% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 66.9 kB or 84% of the original size.

JavaScript Optimization

-73%

Potential reduce by 338.5 kB

  • Original 463.2 kB
  • After minification 418.9 kB
  • After compression 124.7 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 338.5 kB or 73% of the original size.

CSS Optimization

-83%

Potential reduce by 105.7 kB

  • Original 126.8 kB
  • After minification 126.2 kB
  • After compression 21.0 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. Coinb.in needs all CSS files to be minified and compressed as it can save up to 105.7 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 17 (71%)

Requests Now

24

After Optimization

7

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 24 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Coinb. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

coinb.in

coinb.in

203 ms

coinb.in

coinb.in

52 ms

bootstrap.min.css

bootstrap.min.css

41 ms

bootstrap-datetimepicker.min.css

bootstrap-datetimepicker.min.css

58 ms

style.css

style.css

32 ms

jquery-1.9.1.min.js

jquery-1.9.1.min.js

38 ms

moment.min.js

moment.min.js

34 ms

transition.js

transition.js

103 ms

collapse.js

collapse.js

102 ms

bootstrap.min.js

bootstrap.min.js

101 ms

bootstrap-datetimepicker.min.js

bootstrap-datetimepicker.min.js

93 ms

crypto-min.js

crypto-min.js

120 ms

crypto-sha256.js

crypto-sha256.js

118 ms

crypto-sha256-hmac.js

crypto-sha256-hmac.js

119 ms

sha512.js

sha512.js

114 ms

ripemd160.js

ripemd160.js

120 ms

aes.js

aes.js

116 ms

qrcode.js

qrcode.js

116 ms

qcode-decoder.min.js

qcode-decoder.min.js

134 ms

jsbn.js

jsbn.js

152 ms

ellipticcurve.js

ellipticcurve.js

151 ms

coin.js

coin.js

154 ms

coinbin.js

coinbin.js

156 ms

coinbin.gif

coinbin.gif

7 ms

loader.gif

loader.gif

16 ms

glyphicons-halflings-regular.woff

glyphicons-halflings-regular.woff

414 ms

Accessibility Review

coinb.in accessibility score

83

Accessibility Issues

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

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

coinb.in 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

SEO Factors

coinb.in SEO score

85

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Coinb.in can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Coinb.in 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

coinb.in

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