Tools & Wizards About Us

Report Summary

  • 24

    Performance

    Renders faster than
    43% of other websites

  • 75

    Accessibility

    Visual factors better than
    that of 41% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 82

    SEO

    Google-friendlier than
    44% of websites

calculator.com

calculator.com®

Page Load Speed

1.2 sec in total

First Response

292 ms

Resources Loaded

803 ms

Page Rendered

106 ms

About Website

Welcome to calculator.com homepage info - get ready to check Calculator best content for United States right away, or after learning these important things about calculator.com

calculate anything, anytime, anywhere... Free online calculators for everything. Some solve problems, some satisfy curiosity and some simply for fun.

Visit calculator.com

Key Findings

We analyzed Calculator.com page load time and found that the first response time was 292 ms and then it took 909 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

calculator.com performance score

24

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.0 s

83/100

10%

LCP (Largest Contentful Paint)

Value4.8 s

31/100

25%

SI (Speed Index)

Value8.0 s

22/100

10%

TBT (Total Blocking Time)

Value4,040 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.364

30/100

15%

TTI (Time to Interactive)

Value14.0 s

10/100

10%

Network Requests Diagram

calculator.com

292 ms

G0ocbrJmD8IlAttm6-PWEri87z4.js

18 ms

bootstrap.min.css

29 ms

bootstrap.bundle.min.js

38 ms

calc2.css

113 ms

Our browser made a total of 30 requests to load all elements on the main page. We found that 67% of them (20 requests) were addressed to the original Calculator.com, 7% (2 requests) were made to Cdn.jsdelivr.net and 7% (2 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (373 ms) relates to the external source Pagead2.googlesyndication.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 61.2 kB (11%)

Content Size

571.0 kB

After Optimization

509.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Calculator.com main page is 571.0 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. 30% of websites need less resources to load. Javascripts take 457.4 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 41.1 kB

  • Original 51.4 kB
  • After minification 36.9 kB
  • After compression 10.2 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. This page needs HTML code to be minified as it can gain 14.5 kB, which is 28% 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 41.1 kB or 80% of the original size.

Image Optimization

-19%

Potential reduce by 7.2 kB

  • Original 37.0 kB
  • After minification 29.8 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. Obviously, Calculator needs image optimization as it can save up to 7.2 kB or 19% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-2%

Potential reduce by 7.2 kB

  • Original 457.4 kB
  • After minification 457.4 kB
  • After compression 450.1 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

-22%

Potential reduce by 5.6 kB

  • Original 25.3 kB
  • After minification 20.6 kB
  • After compression 19.7 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. Calculator.com needs all CSS files to be minified and compressed as it can save up to 5.6 kB or 22% of the original size.

Requests Breakdown

Number of requests can be reduced by 23 (79%)

Requests Now

29

After Optimization

6

  • Images
  • JavaScript
  • CSS

The browser has sent 29 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 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 18 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

calculator.com accessibility score

75

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

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

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

[id] attributes on active, focusable elements are not unique

Best Practices

calculator.com best practices score

83

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

Page has valid source maps

SEO Factors

calculator.com SEO score

82

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

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 Calculator.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 Calculator.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 Calculator. 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: