Report Summary

  • 79

    Performance

    Renders faster than
    86% of other websites

  • 100

    Accessibility

    Visual factors better than
    that of 97% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 85

    SEO

    Google-friendlier than
    56% of websites

coolbulbs.com

Cool Bulbs | Cool Bulbs

Page Load Speed

6.5 sec in total

First Response

1.5 sec

Resources Loaded

4.5 sec

Page Rendered

416 ms

coolbulbs.com screenshot

About Website

Click here to check amazing Cool Bulbs content for United States. Otherwise, check out these important facts you probably never knew about coolbulbs.com

Coolbulbs.com is an online retailer not just for vehicle lighting, but we also offer lots of equally cool and trendy items for your home, shop, and car. Browse through our site and find cool accessori...

Visit coolbulbs.com

Key Findings

We analyzed Coolbulbs.com page load time and found that the first response time was 1.5 sec and then it took 4.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

coolbulbs.com performance score

79

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.8 s

88/100

10%

LCP (Largest Contentful Paint)

Value4.8 s

31/100

25%

SI (Speed Index)

Value2.6 s

97/100

10%

TBT (Total Blocking Time)

Value40 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.037

100/100

15%

TTI (Time to Interactive)

Value4.6 s

82/100

10%

Network Requests Diagram

coolbulbs.com

1515 ms

styles.css3.php

175 ms

calendar-win2k-1.css

205 ms

bootstrap.css

281 ms

bootstrap-responsive.css

197 ms

Our browser made a total of 123 requests to load all elements on the main page. We found that 92% of them (113 requests) were addressed to the original Coolbulbs.com, 2% (2 requests) were made to Ssl.google-analytics.com and 2% (2 requests) were made to Upstream.where.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Coolbulbs.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.0 MB (33%)

Content Size

3.1 MB

After Optimization

2.1 MB

In fact, the total size of Coolbulbs.com main page is 3.1 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. 45% of websites need less resources to load. Images take 1.8 MB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 66.4 kB

  • Original 76.3 kB
  • After minification 51.9 kB
  • After compression 9.9 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 24.4 kB, which is 32% 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 66.4 kB or 87% of the original size.

Image Optimization

-2%

Potential reduce by 41.8 kB

  • Original 1.8 MB
  • After minification 1.8 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. Cool Bulbs images are well optimized though.

JavaScript Optimization

-71%

Potential reduce by 661.9 kB

  • Original 931.1 kB
  • After minification 930.7 kB
  • After compression 269.2 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 661.9 kB or 71% of the original size.

CSS Optimization

-84%

Potential reduce by 275.3 kB

  • Original 327.9 kB
  • After minification 273.3 kB
  • After compression 52.6 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. Coolbulbs.com needs all CSS files to be minified and compressed as it can save up to 275.3 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 67 (55%)

Requests Now

121

After Optimization

54

The browser has sent 121 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cool Bulbs. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 33 to 1 for JavaScripts and from 18 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

coolbulbs.com accessibility score

100

Accessibility Issues

Best Practices

coolbulbs.com best practices score

75

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

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

coolbulbs.com SEO score

85

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

robots.txt is not valid

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 Coolbulbs.com 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 Coolbulbs.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 Cool Bulbs. 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: