Report Summary

  • 19

    Performance

    Renders faster than
    36% of other websites

  • 86

    Accessibility

    Visual factors better than
    that of 62% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 93

    SEO

    Google-friendlier than
    84% of websites

clearbit.co

B2B Marketing Intelligence | Clearbit

Page Load Speed

2.6 sec in total

First Response

57 ms

Resources Loaded

914 ms

Page Rendered

1.6 sec

clearbit.co screenshot

About Website

Visit clearbit.co now to see the best up-to-date Clearbit content and also check out these interesting facts you probably never knew about clearbit.co

Clearbit provides go-to-market teams with the industry’s most comprehensive B2B dataset across company, contact, and IP intelligence. Use our full dataset to enrich key systems, build products, and po...

Visit clearbit.co

Key Findings

We analyzed Clearbit.co page load time and found that the first response time was 57 ms and then it took 2.5 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

clearbit.co performance score

19

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.7 s

13/100

10%

LCP (Largest Contentful Paint)

Value6.1 s

12/100

25%

SI (Speed Index)

Value15.3 s

1/100

10%

TBT (Total Blocking Time)

Value15,130 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value28.1 s

0/100

10%

Network Requests Diagram

clearbit.com

57 ms

polyfill.min.js

92 ms

tags.js

164 ms

a0a6b38ad80aa09c.css

24 ms

polyfills-c67a75d1b6f99dc8.js

96 ms

Our browser made a total of 61 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Clearbit.co, 3% (2 requests) were made to X.clearbitjs.com and 2% (1 request) were made to Cdn.jsdelivr.net. The less responsive or slowest element that took the longest time to load (316 ms) relates to the external source Clearbit.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 223.1 kB (27%)

Content Size

826.0 kB

After Optimization

602.9 kB

In fact, the total size of Clearbit.co main page is 826.0 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. 65% of websites need less resources to load. Images take 519.4 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 215.2 kB

  • Original 285.6 kB
  • After minification 285.6 kB
  • After compression 70.4 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 215.2 kB or 75% of the original size.

Image Optimization

-2%

Potential reduce by 7.9 kB

  • Original 519.4 kB
  • After minification 511.5 kB

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. Clearbit images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 50 B

  • Original 21.0 kB
  • After minification 21.0 kB
  • After compression 20.9 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. This website has mostly compressed JavaScripts.

Requests Breakdown

Number of requests can be reduced by 33 (61%)

Requests Now

54

After Optimization

21

The browser has sent 54 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Clearbit. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 34 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

clearbit.co accessibility score

86

Accessibility Issues

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

Buttons do not have an accessible name

High

Links do not have a discernible name

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

Best Practices

clearbit.co best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

clearbit.co SEO score

93

Search Engine Optimization Advices

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 Clearbit.co 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 Clearbit.co 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 data is detected on the main page of Clearbit. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: