Tools & Wizards About Us

Report Summary

  • 55

    Performance

    Renders faster than
    72% of other websites

  • 97

    Accessibility

    Visual factors better than
    that of 92% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

poolchemicalcalculator.com

Pool Calculator - Pool Math for Volume and Chemical Dosing

Page Load Speed

733 ms in total

First Response

27 ms

Resources Loaded

425 ms

Page Rendered

281 ms

About Website

Visit poolchemicalcalculator.com now to see the best up-to-date Pool Chemical Calculator content for United States and also check out these interesting facts you probably never knew about poolchemicalcalculator.com

Pool Calculator - Pool math for Volume, Free Chlorine Calculator, pH Calculator, Total Alkalinity Calculator, Salt PPM Calculator and Stabilizer Calculator

Visit poolchemicalcalculator.com

Key Findings

We analyzed Poolchemicalcalculator.com page load time and found that the first response time was 27 ms and then it took 706 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 15% of websites can load faster.

Performance Metrics

poolchemicalcalculator.com performance score

55

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.4 s

98/100

10%

LCP (Largest Contentful Paint)

Value2.5 s

90/100

25%

SI (Speed Index)

Value4.2 s

78/100

10%

TBT (Total Blocking Time)

Value2,230 ms

6/100

30%

CLS (Cumulative Layout Shift)

Value0.145

77/100

15%

TTI (Time to Interactive)

Value11.1 s

20/100

10%

Network Requests Diagram

poolchemicalcalculator.com

27 ms

poolchemicalcalculator.com

233 ms

adsbygoogle.js

63 ms

onejs

6 ms

onejs

8 ms

Our browser made a total of 19 requests to load all elements on the main page. We found that 68% of them (13 requests) were addressed to the original Poolchemicalcalculator.com, 16% (3 requests) were made to Z-na.amazon-adsystem.com and 5% (1 request) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (233 ms) belongs to the original domain Poolchemicalcalculator.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 150.5 kB (35%)

Content Size

435.6 kB

After Optimization

285.1 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Poolchemicalcalculator.com main page is 435.6 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. 30% of websites need less resources to load. HTML takes 181.3 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 150.2 kB

  • Original 181.3 kB
  • After minification 181.3 kB
  • After compression 31.1 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 150.2 kB or 83% of the original size.

Image Optimization

-0%

Potential reduce by 220 B

  • Original 168.7 kB
  • After minification 168.5 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. Pool Chemical Calculator images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 91 B

  • Original 85.6 kB
  • After minification 85.6 kB
  • After compression 85.5 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 3 (23%)

Requests Now

13

After Optimization

10

  • Images
  • JavaScript

The browser has sent 13 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Pool Chemical Calculator. 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

poolchemicalcalculator.com accessibility score

97

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

Best Practices

poolchemicalcalculator.com best practices score

75

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

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

poolchemicalcalculator.com SEO score

100

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 Poolchemicalcalculator.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 Poolchemicalcalculator.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 Pool Chemical Calculator. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: