Tools & Wizards About Us

Report Summary

  • 97

    Performance

    Renders faster than
    94% of other websites

  • 77

    Accessibility

    Visual factors better than
    that of 44% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

preev.com

Bitcoin Exchange Rate — Bitcoin Live Converter — Preev

Page Load Speed

310 ms in total

First Response

30 ms

Resources Loaded

155 ms

Page Rendered

125 ms

About Website

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Key Findings

We analyzed Preev.com page load time and found that the first response time was 30 ms and then it took 280 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

preev.com performance score

97

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.5 s

95/100

10%

LCP (Largest Contentful Paint)

Value2.4 s

91/100

25%

SI (Speed Index)

Value1.5 s

100/100

10%

TBT (Total Blocking Time)

Value30 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value2.4 s

98/100

10%

Network Requests Diagram

preev.com

30 ms

css

61 ms

ga.js

35 ms

sources:bitfinex+bitstamp+btce+localbitcoins

27 ms

__utm.gif

14 ms

Our browser made a total of 6 requests to load all elements on the main page. We found that 33% of them (2 requests) were addressed to the original Preev.com, 50% (3 requests) were made to Google-analytics.com and 17% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (61 ms) relates to the external source Fonts.googleapis.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 49.8 kB (57%)

Content Size

87.3 kB

After Optimization

37.5 kB

  • HTML
  • JavaScript
  • CSS

In fact, the total size of Preev.com main page is 87.3 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. Only 5% of websites need less resources to load. HTML takes 70.0 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 49.8 kB

  • Original 70.0 kB
  • After minification 70.0 kB
  • After compression 20.2 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 49.8 kB or 71% of the original size.

JavaScript Optimization

-0%

Potential reduce by 34 B

  • Original 17.2 kB
  • After minification 17.2 kB
  • After compression 17.1 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. This website has mostly compressed JavaScripts.

CSS Optimization

-18%

Potential reduce by 28 B

  • Original 157 B
  • After minification 137 B
  • After compression 129 B

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. Preev.com needs all CSS files to be minified and compressed as it can save up to 28 B or 18% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

5

After Optimization

5

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 5 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Preev. According to our analytics all requests are already optimized.

Network Requests Diagram

Accessibility Review

preev.com accessibility score

77

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.

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

Form elements do not have associated labels

Best Practices

preev.com best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

SEO Factors

preev.com SEO score

79

Search Engine Optimization Advices

Content Best Practices

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

Impact

Issue

High

Links do not have descriptive text

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 Preev.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 Preev.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

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