Tools & Wizards About Us

Report Summary

  • 75

    Performance

    Renders faster than
    83% of other websites

  • 90

    Accessibility

    Visual factors better than
    that of 74% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 88

    SEO

    Google-friendlier than
    65% of websites

csf-inc.com

Design | Install | Inspect | Central Safety & Fire

Page Load Speed

599 ms in total

First Response

39 ms

Resources Loaded

420 ms

Page Rendered

140 ms

About Website

Welcome to csf-inc.com homepage info - get ready to check Csf Inc best content right away, or after learning these important things about csf-inc.com

Central Safety & Fire is the St Louis' largest fire protection & life safety specialist. We design, install, repair, service & inspect a variety of fire suppression & life safety systems. Contact...

Visit csf-inc.com

Key Findings

We analyzed Csf-inc.com page load time and found that the first response time was 39 ms and then it took 560 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.

Performance Metrics

csf-inc.com performance score

75

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

58/100

10%

LCP (Largest Contentful Paint)

Value4.6 s

34/100

25%

SI (Speed Index)

Value3.0 s

94/100

10%

TBT (Total Blocking Time)

Value150 ms

94/100

30%

CLS (Cumulative Layout Shift)

Value0.006

100/100

15%

TTI (Time to Interactive)

Value4.7 s

80/100

10%

Network Requests Diagram

csf-inc.com

39 ms

league-spartan.css

54 ms

script.js

114 ms

UX.4.33.5.js

76 ms

script.js

119 ms

Our browser made a total of 9 requests to load all elements on the main page. We found that 11% of them (1 request) were addressed to the original Csf-inc.com, 89% (8 requests) were made to Img1.wsimg.com. The less responsive or slowest element that took the longest time to load (280 ms) relates to the external source Img1.wsimg.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 133.5 kB (30%)

Content Size

438.6 kB

After Optimization

305.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Csf-inc.com main page is 438.6 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. Javascripts take 193.2 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 76.7 kB

  • Original 91.2 kB
  • After minification 91.2 kB
  • After compression 14.5 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 76.7 kB or 84% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 153.9 kB
  • After minification 153.9 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. Csf Inc images are well optimized though.

JavaScript Optimization

-29%

Potential reduce by 56.6 kB

  • Original 193.2 kB
  • After minification 193.2 kB
  • After compression 136.6 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 56.6 kB or 29% of the original size.

CSS Optimization

-52%

Potential reduce by 172 B

  • Original 330 B
  • After minification 304 B
  • After compression 158 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. Csf-inc.com needs all CSS files to be minified and compressed as it can save up to 172 B or 52% of the original size.

Requests Breakdown

Number of requests can be reduced by 3 (43%)

Requests Now

7

After Optimization

4

  • Images
  • JavaScript
  • CSS

The browser has sent 7 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Csf Inc. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

csf-inc.com accessibility score

90

Accessibility Issues

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

csf-inc.com 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

Page has valid source maps

SEO Factors

csf-inc.com SEO score

88

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

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

High

Tap targets are not sized appropriately

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