Calculator Soup - Calculatorsoup

Overview

Snoop Summary for calculatorsoup.com

This is a free and comprehensive report about calculatorsoup.com. The domain calculatorsoup.com is currently hosted on a server located in United States with the IP address 216.92.14.11, where the local currency is USD and English is the local language. Our records indicate that calculatorsoup.com is privately registered by CalculatorSoup, LLC. Calculatorsoup.com is expected to earn an estimated $5,765 USD per day from advertising revenue. The sale of calculatorsoup.com would possibly be worth $4,208,713 USD. This figure is based on the daily revenue potential of the website over a 24 month period. Calculatorsoup.com is insanely popular with an estimated 619,206 daily unique visitors. This report was last updated 12th September, 2023.

About calculatorsoup.com

Site Preview:
Title:	Calculator Soup
Description:	Online calculators for finance, math, algebra, trigonometry, fractions, geometry, physics, time, statistics and conversions.
Keywords and Tags:	calculator, calculator soup, calculators, decimal to fraction, education, fraction calculator, fraction to decimal, hours calculator, math, percentage calculator, popular, quadratic formula, reference, science, square foot calculator, web-based
Related Terms:	algebra and geometry, analytic geometry, ch4 molecular geometry, conversions, conversions., fractions, molecular geometry, ti graphing calculators, tiger algebra, trigonometry help
Fav Icon:
Age:	Over 14 years old
Domain Created:	25th December, 2009
Domain Updated:	10th September, 2020
Domain Expires:	25th December, 2025

Review

Snoop Score

4/5 (Excellent!)

Valuation

$4,208,713 USD

Note: All valuation figures are estimates.

Popularity

Very High

Note: Popularity is estimated.

Rank, Reach and Authority

Alexa Rank:	3,724
Alexa Reach:	0.0198%
SEMrush Rank (US):	837
SEMrush Authority Score:	56
Moz Domain Authority:	0
Moz Page Authority:	0

Rank By Country

Country	Alexa Rank
United Arab Emirates	2,015
Australia	1,269
Bangladesh	2,722
Canada	1,854
Egypt	9,874
United Kingdom	3,605
Indonesia	6,388
India	2,502
Iran, Islamic Republic Of	18,688
Korea Republic Of	8,892
Kuwait	2,097
Malaysia	2,991
Nigeria	6,146
Netherlands	7,677
Philippines	818
Pakistan	3,107
Qatar	2,835
Saudi Arabia	4,031
Singapore	2,567
Thailand	6,791
United States	1,437
South Africa	1,677

Show Rank By Country

Organic vs Paid (Google Ads)

	Organic	Paid
Keywords:	204,511	0
Traffic:	4,211,216	0
Cost:	$4,159,946 USD	$0 USD

Traffic

Visitors

Daily Visitors:	619,206
Monthly Visitors:	18,846,680
Yearly Visitors:	226,010,190

Note: All visitors figures are estimates.

Visitors By Country

Country	Visitors (Unique)	Percentage
United Arab Emirates	Daily: 6,192 Monthly: 188,467 Yearly: 2,260,102	1%
Australia	Daily: 25,387 Monthly: 772,714 Yearly: 9,266,418	4.1%
Bangladesh	Daily: 5,573 Monthly: 169,620 Yearly: 2,034,092	0.9%
Canada	Daily: 22,291 Monthly: 678,480 Yearly: 8,136,367	3.6%
Egypt	Daily: 3,715 Monthly: 113,080 Yearly: 1,356,061	0.6%
United Kingdom	Daily: 20,434 Monthly: 621,940 Yearly: 7,458,336	3.3%
Indonesia	Daily: 4,954 Monthly: 150,773 Yearly: 1,808,082	0.8%
India	Daily: 91,023 Monthly: 2,770,462 Yearly: 33,223,498	14.7%
Iran, Islamic Republic Of	Daily: 3,715 Monthly: 113,080 Yearly: 1,356,061	0.6%
Korea Republic Of	Daily: 5,573 Monthly: 169,620 Yearly: 2,034,092	0.9%
Kuwait	Daily: 3,715 Monthly: 113,080 Yearly: 1,356,061	0.6%
Malaysia	Daily: 6,811 Monthly: 207,313 Yearly: 2,486,112	1.1%
Nigeria	Daily: 4,334 Monthly: 131,927 Yearly: 1,582,071	0.7%
Netherlands	Daily: 3,096 Monthly: 94,233 Yearly: 1,130,051	0.5%
Other	Daily: 91,642 Monthly: 2,789,309 Yearly: 33,449,508	14.8%
Philippines	Daily: 14,861 Monthly: 452,320 Yearly: 5,424,245	2.4%
Pakistan	Daily: 10,527 Monthly: 320,394 Yearly: 3,842,173	1.7%
Qatar	Daily: 6,192 Monthly: 188,467 Yearly: 2,260,102	1%
Saudi Arabia	Daily: 7,430 Monthly: 226,160 Yearly: 2,712,122	1.2%
Singapore	Daily: 4,954 Monthly: 150,773 Yearly: 1,808,082	0.8%
Thailand	Daily: 3,715 Monthly: 113,080 Yearly: 1,356,061	0.6%
United States	Daily: 261,924 Monthly: 7,972,146 Yearly: 95,602,310	42.3%
South Africa	Daily: 11,146 Monthly: 339,240 Yearly: 4,068,183	1.8%

Note: All visitors figures are estimates.

Revenue

Daily Revenue:	$5,765 USD
Monthly Revenue:	$175,479 USD
Yearly Revenue:	$2,104,351 USD

Note: All revenue figures are estimates.

Revenue By Country

Country	Revenue	Percentage
United Arab Emirates	Daily: $3 USD Monthly: $96 USD Yearly: $1,147 USD	0.1%
Australia	Daily: $29 USD Monthly: $877 USD Yearly: $10,513 USD	0.5%
Bangladesh	Daily: $1 USD Monthly: $28 USD Yearly: $334 USD	<0.1%
Canada	Daily: $37 USD Monthly: $1,139 USD Yearly: $13,663 USD	0.6%
Egypt	Daily: $0 USD Monthly: $8 USD Yearly: $101 USD	<0.1%
United Kingdom	Daily: $63 USD Monthly: $1,921 USD Yearly: $23,039 USD	1.1%
Indonesia	Daily: $3 USD Monthly: $98 USD Yearly: $1,176 USD	0.1%
India	Daily: $253 USD Monthly: $7,693 USD Yearly: $92,249 USD	4.4%
Iran, Islamic Republic Of	Daily: $0 USD Monthly: $0 USD Yearly: $0 USD	<0.1%
Korea Republic Of	Daily: $5 USD Monthly: $140 USD Yearly: $1,681 USD	0.1%
Kuwait	Daily: $1 USD Monthly: $15 USD Yearly: $183 USD	<0.1%
Malaysia	Daily: $2 USD Monthly: $72 USD Yearly: $864 USD	<0.1%
Nigeria	Daily: $1 USD Monthly: $31 USD Yearly: $375 USD	<0.1%
Netherlands	Daily: $2 USD Monthly: $75 USD Yearly: $895 USD	<0.1%
Other	Daily: $0 USD Monthly: $0 USD Yearly: $0 USD	<0.1%
Philippines	Daily: $5 USD Monthly: $167 USD Yearly: $2,005 USD	0.1%
Pakistan	Daily: $4 USD Monthly: $124 USD Yearly: $1,485 USD	0.1%
Qatar	Daily: $0 USD Monthly: $8 USD Yearly: $101 USD	<0.1%
Saudi Arabia	Daily: $2 USD Monthly: $49 USD Yearly: $582 USD	<0.1%
Singapore	Daily: $1 USD Monthly: $29 USD Yearly: $348 USD	<0.1%
Thailand	Daily: $1 USD Monthly: $25 USD Yearly: $296 USD	<0.1%
United States	Daily: $5,343 USD Monthly: $162,633 USD Yearly: $1,950,306 USD	92.7%
South Africa	Daily: $8 USD Monthly: $251 USD Yearly: $3,009 USD	0.1%

Note: All revenue figures are estimates.

SEO

Backlinks Analysis (SEMrush)

Backlinks:	277,644
Referring Domains:	5,447
Referring IPs:	6,654

Calculatorsoup.com has 277,644 backlinks according to SEMrush. 76% of these backlinks are "dofollow" (follow) links which allow the flow of link equity to pass through, which may improve calculatorsoup.com's search engine rankings. Other links are treated as 'hints' by search engines and may also pass link equity, depending on what search engines decide in each case.

100% of calculatorsoup.com's backlinks are text and image links, which are ideal for SEO. Other backlink types may be unrecognized or ignored by search engines.

Top Ranking Keywords (US)

1

Keyword: calculator

Ranked Page: https://www.calculatorsoup.com/

2

Keyword: fraction calculator

Ranked Page: https://www.calculatorsoup.com/calculators/math/fractions.php

3

Keyword: decimal to fraction

Ranked Page: https://www.calculatorsoup.com/calculators/math/decimal-to-fraction-calculator.php

4

Keyword: hours calculator

Ranked Page: https://www.calculatorsoup.com/calculators/time/hours.php

5

Keyword: calculator soup

Ranked Page: https://www.calculatorsoup.com/

Domain Analysis

	Value	Length
Domain:	calculatorsoup.com	18
Domain Name:	calculatorsoup	14
Extension (TLD):	com	3

Expiry Check:

Page Speed Analysis

Average Load Time:	0.75 seconds
Load Time Comparison:	Faster than 85% of sites

Avg. (All Categories)

Performance

Accessibility

Best Practices

SEO

PWA

0–49 (Fail) 50–89 (Average) 90–100 (Pass)

URL: https://www.calculatorsoup.com/

Updated: 23rd January, 2023

0.98 seconds

First Contentful Paint (FCP)

94%

4%

2%

0.00 seconds

First Input Delay (FID)

99%

1%

0%

Simulate loading on desktop

Performance

Indicates how well the page is performing and highlights opportunities where performance may be improved for calculatorsoup.com. This includes details about optimizing page load times which can result in a better user experience.

Passing (56)
Average (2)

Metrics

First Contentful Paint — 0.7 s
The time taken for the first image or text on the page to be rendered.

Time to Interactive — 0.7 s
The time taken for the page to become fully interactive.

Speed Index — 0.7 s
The time taken for the page contents to be visibly populated.

Total Blocking Time — 0 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).

Largest Contentful Paint — 0.7 s
The timing of the largest text or image that is painted.

Cumulative Layout Shift — 0
Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data

Audits

Max Potential First Input Delay — 40 ms
Users could experience a delay when interacting with the page.

First Meaningful Paint — 0.7 s
The time taken for the primary content of the page to be rendered.

Network Requests
Below is a list of network requests that were made during page load.

URL	Protocol	Start Time (Ms)	End Time (Ms)	Transfer Size (Bytes)	Resource Size (Bytes)	Status Code	MIME Type	Resource Type
http://calculatorsoup.com/	http/1.1	0	142.65599986538	382	0	301	text/html
https://www.calculatorsoup.com/	h2	143.06099992245	402.46000001207	10816	58257	200	text/html	Document
https://cdn.calculatorsoup.com/css/styles201602.css?v=20221010	h2	410.16899980605	518.88300012797	5809	22895	200	text/css	Stylesheet
https://cdn.calculatorsoup.com/images/icons/calculator_soup_48x48.png	h2	410.60899989679	509.79499984533	1478	742	200	image/png	Image
https://cdn.calculatorsoup.com/images/social/share_48_facebook.png	h2	520.38600016385	569.86800022423	1049	313	200	image/png	Image
https://cdn.calculatorsoup.com/images/social/share_48_twitter.png	h2	523.42699980363	570.48500003293	1341	605	200	image/png	Image
https://www.calculatorsoup.com/scripts/basic2022-mini-tab.min.js?v=20230119	h2	511.92300021648	592.64700021595	3249	10239	200	application/javascript	Script
https://www.google-analytics.com/analytics.js	h2	523.6169998534	530.32100014389	20710	50234	200	text/javascript	Script
https://s.swiftypecdn.com/install/v2/st.js	http/1.1	524.64100020006	617.83599993214	112736	425684	200	text/javascript	Script
https://cdn.calculatorsoup.com/scripts/closed.gif	h2	526.81800024584	548.25300024822	1101	365	200	image/gif	Image
https://www.google-analytics.com/j/collect?v=1&_v=j99&aip=1&a=1258105124&t=pageview&_s=1&dl=https%3A%2F%2Fwww.calculatorsoup.com%2F&ul=en-us&de=UTF-8&dt=Calculator%20Soup%20-%20Online%20Calculators&sd=24-bit&sr=800x600&vp=1350x940&je=0&_u=YEBAAEABAAAAACAAI~&jid=423403412&gjid=559553253&cid=1340485566.1674458350&tid=UA-201728-7&_gid=395865389.1674458350&_r=1&_slc=1&z=756607635	h2	588.67699978873	592.24400017411	623	4	200	text/plain	XHR
https://stats.g.doubleclick.net/j/collect?t=dc&aip=1&_r=3&v=1&_v=j99&tid=UA-201728-7&cid=1340485566.1674458350&jid=423403412&gjid=559553253&_gid=395865389.1674458350&_u=YEBAAEAAAAAAACAAI~&z=946030848	h2	596.99899982661	600.75900005177	693	1	200	text/plain	XHR
https://s.swiftypecdn.com/install/v2/config/1u3sJPoCKKXU4zXSs1Q1.json	http/1.1	680.91800017282	738.13399998471	5163	19268	200	application/json	XHR
https://s.swiftypecdn.com/assets/new_embed-91517c1e71e10890e4017d4c45b2dcd307c1d94998b851abdeefd8780de40d90.css	http/1.1	742.62800021097	789.33200007305	34457	91625	200	text/css	Stylesheet
	data	792.87400003523	792.99600003287	0	396	200	image/png	Image
https://cc.swiftype.com/cc.js?engine_key=iR9k2oSyesyattEVzKQy&url=https%3A%2F%2Fwww.calculatorsoup.com%2F	http/1.1	866.18599994108	1096.8019999564	279	43	200	image/gif	Image

Show Details

Network Round Trip Times — 0 ms
High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.

Server Backend Latencies — 0 ms
High server latencies indicate the server is overloaded or has a poor backend performance.

Tasks
Below is a list of the top-level main thread tasks that executed during page load.

Start Time (Ms)	End Time (Ms)
406.68	11.47
525.669	18.463
547.044	11.809
561.2	28.467
646.525	36.525
739.499	6.209
846.158	20.381

Show Details

Diagnostics
Below is a collection of useful page vitals.
View Data

Metrics
Below is a collection of metrics.
View Data

Script Treemap Data
Provide as required, for treemap app.

Other

Properly size images
Images can slow down the page's load time. Calculatorsoup.com should consider serving more appropriate-sized images.

Defer offscreen images
Time to Interactive can be slowed down by resources on the page. Calculatorsoup.com should consider lazy-loading offscreen and hidden images.

Minify CSS
Cascading Style Sheets (CSS) files can contribute to network payload sizes. Calculatorsoup.com should consider minifying CSS files.

Minify JavaScript
JavaScript (JS) files can contribute to network payload sizes and increase script parse times. Calculatorsoup.com should consider minifying JS files.

Reduce unused CSS — Potential savings of 33 KiB
Dead and/or unused rules in Style Sheets (CSS) can contribute to network payload sizes. Calculatorsoup.com should consider removing dead rules from style sheets and deferring the loading of CSS not used for above-the-fold content.

URL	Transfer Size (Bytes)	Potential Savings (Bytes)
https://s.swiftypecdn.com/assets/new_embed-91517c1e71e10890e4017d4c45b2dcd307c1d94998b851abdeefd8780de40d90.css	34457	33982

Show Details

Reduce unused JavaScript — Potential savings of 68 KiB
It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.

URL	Transfer Size (Bytes)	Potential Savings (Bytes)
https://s.swiftypecdn.com/install/v2/st.js	112736	69532

Show Details

Efficiently encode images
Unoptimized images can consume more cellular data than what is necessary.

Serve images in next-gen formats
Consider JPEG 2000, JPEG XR or WebP image formats which provide better compression than PNG and JPEG.

Enable text compression
Text-based resources should be served with compression, such as gzip, deflate or brotli.

Preconnect to required origins
Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins.

Initial server response time was short — Root document took 260 ms
It is advised to keep the server response time short for the main document, because all other requests depend on it.

URL	Time Spent (Ms)
https://www.calculatorsoup.com/	260.392

Show Details

Avoid multiple page redirects — Potential savings of 190 ms
Redirects can cause additional delays before the page can begin loading. Calculatorsoup.com should avoid multiple or unnecessary page redirects.

URL	Time Spent (Ms)
http://calculatorsoup.com/	190
https://www.calculatorsoup.com/	0

Show Details

Preload key requests
Key requests can be preloaded by using '<link rel=preload>'. Calculatorsoup.com should consider using '<link rel=preload>' to prioritize fetching resources that are currently requested later in page load.

Use video formats for animated content
Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF.

Remove duplicate modules in JavaScript bundles
Ensure that no duplicate JavaScript modules from bundles exist to reduce bytes consumed by network activity.

Avoid serving legacy JavaScript to modern browsers — Potential savings of 8 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. For bundled JavaScript it is recommended to adopt a modern script deployment strategy using module/nomodule feature detection. This will reduce the amount of code shipped to modern browsers.

URL	Potential Savings (Bytes)
https://s.swiftypecdn.com/install/v2/st.js	8258

Show Details

Preload Largest Contentful Paint image
It is recommended to preload images used by LCP elements, to improve LCP time.

Avoids enormous network payloads — Total size was 195 KiB
Large network payloads can cost users money and are linked to long load times.

URL	Transfer Size (Bytes)
https://s.swiftypecdn.com/install/v2/st.js	112736
https://s.swiftypecdn.com/assets/new_embed-91517c1e71e10890e4017d4c45b2dcd307c1d94998b851abdeefd8780de40d90.css	34457
https://www.google-analytics.com/analytics.js	20710
https://www.calculatorsoup.com/	10816
https://cdn.calculatorsoup.com/css/styles201602.css?v=20221010	5809
https://s.swiftypecdn.com/install/v2/config/1u3sJPoCKKXU4zXSs1Q1.json	5163
https://www.calculatorsoup.com/scripts/basic2022-mini-tab.min.js?v=20230119	3249
https://cdn.calculatorsoup.com/images/icons/calculator_soup_48x48.png	1478
https://cdn.calculatorsoup.com/images/social/share_48_twitter.png	1341
https://cdn.calculatorsoup.com/scripts/closed.gif	1101

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Avoids an excessive DOM size — 345 elements
A large DOM (Document Object Model) will increase memory usage, cause longer system calculations as well as costly layout reflows.

Statistic	Element	Value
Total DOM Elements		345
Maximum DOM Depth	y	16
Maximum Child Elements	Help \| Requests & Suggestions \| Contact Us Legal Information & Terms of Use \|…	15

Show Details

Avoid chaining critical requests — 2 chains found
Below is a list of Critical Request Chains, which shows which resources are loaded with a high priority. Calculatorsoup.com should consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

User Timing marks and measures
Make use of the User Timing API to measure an app's real-world performance during key user experiences.

JavaScript execution time — 0.1 s
JavaScript (JS) execution time can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.

URL	Total CPU Time (Ms)	Script Evaluation (Ms)	Script Parse (Ms)
https://s.swiftypecdn.com/install/v2/st.js	67.99	56.069	8.15
https://www.calculatorsoup.com/	64.061	4.914	1.914

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Minimizes main-thread work — 0.2 s
Main-thread work timing can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.

Category	Time Spent (Ms)
Script Evaluation	84.994
Style & Layout	33.402
Other	32.332
Rendering	13.204
Script Parsing & Compilation	11.196
Parse HTML & CSS	9.438

Show Details

All text remains visible during webfont loads
Make use of the font-display CSS feature, which will ensure text is user-visible while webfonts are loading.

Keep request counts low and transfer sizes small — 15 requests • 195 KiB
It is advised to add a budgets.json file in order to set budgets for the quantity and size of page resources.

Resource Type	Requests	Transfer Size (Bytes)
Total	15	199886
Script	3	136695
Stylesheet	2	40266
Document	1	10816
Other	4	6861
Image	5	5248
Media	0	0
Font	0	0
Third-party	7	174661

Show Details

Minimize third-party usage — Third-party code blocked the main thread for 0 ms
It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.

Third-Party	Transfer Size (Bytes)	Main-Thread Blocking Time (Ms)
SHOW DETAILS	152635	0
SHOW DETAILS	21333	0
SHOW DETAILS	693	0

Show Details

Lazy load third-party resources with facades
Consider replacing third-party embeds with a facade until they are required (use lazy loading).

Largest Contentful Paint element — 1 element found
The element which was identified as the Largest Contentful Paint.

Element
Calculator Categories

Show Details

Largest Contentful Paint image was not lazily loaded
Above-the-fold images that are lazily loaded render later in the page lifecycle, which can delay the largest contentful paint.

Avoid large layout shifts
Below is a list of all DOM elements that contribute to the CLS of the page.

Uses passive listeners to improve scrolling performance
Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'.

Avoids `document.write()`
Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds.

Avoid long main-thread tasks
Below is a list of the longest tasks on the main thread, which is useful when identifying the worst input delay contributors.

Avoid non-composited animations
It is recommended to avoid non-composited animations which are often janky and increase CLS.

Image elements have explicit `width` and `height`
Reduce layout shifts and improve CLS by setting explicit width and height properties on image elements.

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of calculatorsoup.com on mobile screens.

Avoids `unload` event listeners
The 'unload' event does not fire reliably, causing issues with browser optimizations such as the Back-Forward Cache. It is recommended that 'pagehide' or 'visibilitychange' events are used instead.

Budgets

Performance budget
It is advised to keep the quantity and size of all network requests under the targets set by the provided performance budget.

Timing budget
It is advised to set a timing budget to monitor the performance of your site.

Other

Eliminate render-blocking resources — Potential savings of 220 ms
Resources, such as JavaScript and style sheets, can block the first paint of the page. Calculatorsoup.com should consider delivering critical JavaScript/style sheets (JS/CSS) inline and deferring all non-critical JS/CSS.

URL	Transfer Size (Bytes)	Potential Savings (Ms)
https://cdn.calculatorsoup.com/css/styles201602.css?v=20221010	5809	230

Show Details

Serve static assets with an efficient cache policy — 3 resources found
Calculatorsoup.com can speed up repeat visits by increasing the cache lifetime, which is essentially how long before a cached copy expires.

URL	Cache TTL (Ms)	Transfer Size (Bytes)
https://s.swiftypecdn.com/install/v2/st.js	300000	112736
https://www.google-analytics.com/analytics.js	7200000	20710
https://www.calculatorsoup.com/scripts/basic2022-mini-tab.min.js?v=20230119	2592000000	3249

Show Details

Accessibility

Indicates how accessible the page is and highlights opportunities where the page can be made more accessible to users of calculatorsoup.com. This includes details about various page attributes that can be optimized.

Passing (44)
Manual Checks (10)

Navigation

`[accesskey]` values are unique
Access keys assist users with focusing on different parts of the page. Each access key should be unique for proper navigation.

The page contains a heading, skip link, or landmark region
It is advised to provide ways to bypass repetitive content, allowing users to navigate the page efficiently.

`[id]` attributes on active, focusable elements are unique
Ensure all focusable elements have a unique id value to allow them to be visible to users of assistive technologies, like a screen reader.

Heading elements appear in a sequentially-descending order
Properly order all headers and do not skip heading levels to better the navigation and readability for users of assistive technologies, like a screen reader.

No element has a `[tabindex]` value greater than 0
Although technically valid, a tabindex value greater than 0 often creates frustrating experiences for users who rely on assistive technologies.

ARIA

`[aria-*]` attributes match their roles
Avoid mismatching 'aria-*' attributes and their 'role' value, as it invalidates the attribute.

`button`, `link`, and `menuitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.

`[aria-hidden="true"]` is not present on the document `<body>`
If aria-hidden=true is set on the document body, assistive technologies, like a screen reader will work inconsistently.

`[aria-hidden="true"]` elements do not contain focusable descendents
Interactive elements within an aria-hidden=true element are unavailable to users of assistive technologies, like a screen reader.

ARIA input fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when an input field does not have an accessible name specified.

ARIA `meter` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.

ARIA `progressbar` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.

`[role]`s have all required `[aria-*]` attributes
Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality.

Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.

`[role]`s are contained by their required parent element
Some ARIA child roles cannot perform their intended functions if specific parent roles are not used.

`[role]` values are valid
All ARIA roles require valid values to perform their intended functions.

ARIA toggle fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when a toggle field does not have an accessible name specified.

ARIA `tooltip` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.

ARIA `treeitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.

`[aria-*]` attributes have valid values
ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies.

`[aria-*]` attributes are valid and not misspelled
ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies.

ARIA IDs are unique
Ensure all ARIA ID values are unique to prevent elements from being overlooked by assistive technologies, like a screen reader.

Names and labels

Buttons have an accessible name
Buttons become unusable as they are announced simply as "button" when the button does not have an accessible name, when used by screen readers and other assistive technologies.

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.

No form fields have multiple labels
Having multiple labels for form fields can be confusing to assistive technologies, like a screen reader.

`<frame>` or `<iframe>` elements have a title
Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames.

Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.

`<input type="image">` elements have `[alt]` text
Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose.

Form elements have associated labels
Screen readers and other assistive technologies rely on labels to properly announce form controls.

Links have a discernible name
In order to improve the navigation for screen reader and other assistive technology users, use link text that is unique, focusable and discernible.

`<object>` elements have alternate text
It is advised that alt text is used on '<object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.

Contrast

Background and foreground colors have a sufficient contrast ratio
Many (if not most) users find low-contrast text difficult or impossible to read.

Tables and lists

`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up.

Definition list items are wrapped in `<dl>` elements
In order for screen readers and other assistive technologies to properly announce definition list items ('<dt>' and '<dd>'), they must be wrapped in parent a '<dl>' element.

Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Use proper list structure to aid screen readers and other assistive technologies.

List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
In order for screen readers to announce list items, ensure that list items ('<li>') are contained within parent '<ul>' or '<ol>' tags.

Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that '<td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience.

`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.

Internationalization and localization

`<html>` element has a `[lang]` attribute
It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies.

`<html>` element has a valid value for its `[lang]` attribute
Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly.

`[lang]` attributes have a valid value
Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.

Best practices

The document does not use `<meta http-equiv="refresh">`
Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly.

`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
For users with low vision who rely on screen magnification, ensure that zooming is not disabled.

Audio and video

`<video>` elements contain a `<track>` element with `[kind="captions"]`
Calculatorsoup.com may provide assistance to deaf or hearing-impaired users with captions on videos.

Manual Checks

The page has a logical tab order
The visual layout should be logical in its tab order and users cannot focus elements that are offscreen.

Interactive controls are keyboard focusable
Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed.

Interactive elements indicate their purpose and state
Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state.

The user's focus is directed to new content added to the page
When new content (such as a dialogue) is added to the page, the user's focus should be directed to it.

User focus is not accidentally trapped in a region
Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page.

Custom controls have associated labels
Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes.

Custom controls have ARIA roles
Ensure that all custom interactive controls have appropriate ARIA roles.

Visual order on the page follows DOM order
Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies.

Offscreen content is hidden from assistive technology
Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute.

HTML5 landmark elements are used to improve navigation
Elements such as <main> and <nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.

Best Practices

Indicates the recommended, best practices currently in place on the page and highlights the best practices that calculatorsoup.com should incorporate. This includes practices such as protecting pages with HTTPS.

Passing (15)
Failing (1)

Audits

Avoids requesting the geolocation permission on page load
When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.

Avoids requesting the notification permission on page load
When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.

Avoids front-end JavaScript libraries with known security vulnerabilities
Ensure that the use of third-party scripts is minimal and that only trusted third-party scripts are used as some may contain known security vulnerabilities which may be exploited by attackers.

Ensure CSP is effective against XSS attacks
Significantly reduce the risk of cross-site scripting attacks (XSS) by ensuring you have a strong Content Security Policy (CSP).

Description	Directive	Severity
No CSP found in enforcement mode		High

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Audits

Allows users to paste into password fields
Ensure that password inputs may be pasted into to aid in the user's ability to use password managers and improve security.

Displays images with correct aspect ratio
Ensure that image display dimensions match their natural aspect ratio.

Serves images with appropriate resolution
For maximum image clarity, ensure images have natural dimensions and are proportional to the display size and pixel ratio.

Fonts with `font-display: optional` are preloaded
It is recommended that optional fonts are preloaded.

Audits

Page has the HTML doctype
Ensure a doctype is specified to prevent the browser from switching to quirks-mode.

Properly defines charset
It is advised to declare a character encoding, optionally via a <meta> tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.

Audits

Detected JavaScript libraries
Below is a list of all front-end JavaScript libraries that were detected on the page.

Avoids deprecated APIs
Avoid deprecated APIs which will eventually be removed the browser.

No browser errors logged to the console
Below is a list of all errors logged to the console, which indicate unresolved problems on the site.

Page has valid source maps
Consider deploying source maps for added benefits such as the ability to debug while in production.

No issues in the `Issues` panel in Chrome Devtools
There may be unresolved issues logged to Chrome Devtools.

Audits

Does not use HTTPS — 1 insecure request found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.

Insecure URL	Request Resolution
http://calculatorsoup.com/	Allowed

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SEO

Indicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for calculatorsoup.com. This includes optimizations such as providing meta data.

Passing (14)
Manual Checks (1)

Mobile Friendly

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of calculatorsoup.com on mobile screens.

Document uses legible font sizes
Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px.

Tap targets are sized appropriately
Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.

Content Best Practices

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.

Document has a meta description
Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content.

Links have descriptive text
Make use of descriptive link text to assist search engines in understanding the content.

Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.

Document has a valid `hreflang`
Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links.

Document has a valid `rel=canonical`
Search engines can be suggested which URL should be shown in search results through the use of canonical links.

Document avoids plugins
The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.

Crawling and Indexing

Page has successful HTTP status code
Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines.

Links are crawlable
Ensure that the 'href' attribute of anchor elements links to the appropriate destination. This allows for more pages of the site to be discovered by search engines.

Page isn’t blocked from indexing
Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed.

robots.txt is valid
Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.

PWA

Indicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of calculatorsoup.com. This includes details about web app manifests.

Installable

Web app manifest and service worker meet the installability requirements
User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.

PWA Optimized

Sets a theme color for the address bar.
A theme may be applied to the browser address bar, which ideally can be made to match the site.
View Data

Content is sized correctly for the viewport
Ensure that the width of the app's content matches the width of the viewport, otherwise the app might not be optimized for mobile screens.

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of calculatorsoup.com on mobile screens.

Provides a valid `apple-touch-icon`
iOS users of Progressive Web Apps will benefit from an apple touch icon, which can be defined with 'apple-touch-icon', which must point to a non-transparent 192px (or 180px) square PNG.

PWA Optimized

Does not register a service worker that controls page and `start_url`
A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications.

Is not configured for a custom splash screen
Themed splash screens ensure a high-quality user experience at launch for app users.
View Data

Manifest doesn't have a maskable icon
Maskable icons are great to ensure that images fill the entire shape when installing the app on a device.

Manual Checks

Site works cross-browser
Ensure that the Progressive Web App works correctly across every major browser.

Page transitions don't feel like they block on the network
Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network.

Each page has a URL
Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.

Avg. (All Categories)

Performance

Accessibility

Best Practices

SEO

PWA

0–49 (Fail) 50–89 (Average) 90–100 (Pass)

URL: https://www.calculatorsoup.com/

Updated: 23rd January, 2023

1.19 seconds

First Contentful Paint (FCP)

89%

7%

4%

0.02 seconds

First Input Delay (FID)

95%

4%

1%

Simulate loading on mobile

Performance

Indicates how well the page is performing and highlights opportunities where performance may be improved for calculatorsoup.com. This includes details about optimizing page load times which can result in a better user experience.

Passing (51)
Average (8)

Metrics

Speed Index — 2.2 s
The time taken for the page contents to be visibly populated.

Total Blocking Time — 190 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).

Largest Contentful Paint — 2.2 s
The timing of the largest text or image that is painted.

Cumulative Layout Shift — 0
Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data

Audits

First Meaningful Paint — 2.2 s
The time taken for the primary content of the page to be rendered.

Network Requests
Below is a list of network requests that were made during page load.

URL	Protocol	Start Time (Ms)	End Time (Ms)	Transfer Size (Bytes)	Resource Size (Bytes)	Status Code	MIME Type	Resource Type
http://calculatorsoup.com/	http/1.1	0	154.89799997886	382	0	301	text/html
https://www.calculatorsoup.com/	h2	155.32299998449	362.13399999542	10816	58257	200	text/html	Document
https://cdn.calculatorsoup.com/css/styles201602.css?v=20221010	h2	372.00899998425	397.66199997393	5809	22895	200	text/css	Stylesheet
https://cdn.calculatorsoup.com/images/icons/calculator_soup_48x48.png	h2	372.30699998327	392.53799998551	1478	742	200	image/png	Image
https://cdn.calculatorsoup.com/images/social/share_48_facebook.png	h2	399.15399998426	418.43499999959	1049	313	200	image/png	Image
https://cdn.calculatorsoup.com/images/social/share_48_twitter.png	h2	401.78599997307	500.33999999869	1341	605	200	image/png	Image
https://www.calculatorsoup.com/scripts/basic2022-mini-tab.min.js?v=20230119	h2	394.32699998724	484.71099999733	3249	10239	200	application/javascript	Script
https://www.google-analytics.com/analytics.js	h2	401.96099999594	406.29299997818	20709	50234	200	text/javascript	Script
https://s.swiftypecdn.com/install/v2/st.js	http/1.1	403.15399999963	506.06200000038	112736	425684	200	text/javascript	Script
https://cdn.calculatorsoup.com/scripts/closed.gif	h2	405.82799998811	523.89399998356	1101	365	200	image/gif	Image
https://www.google-analytics.com/j/collect?v=1&_v=j99&aip=1&a=911925007&t=pageview&_s=1&dl=https%3A%2F%2Fwww.calculatorsoup.com%2F&ul=en-us&de=UTF-8&dt=Calculator%20Soup%20-%20Online%20Calculators&sd=24-bit&sr=360x640&vp=360x640&je=0&_u=YEBAAEABAAAAACAAI~&jid=1428617580&gjid=229363422&cid=1612772745.1674458367&tid=UA-201728-7&_gid=1369269764.1674458367&_r=1&_slc=1&z=781177117	h2	473.84299998521	477.67799999565	623	4	200	text/plain	XHR
https://stats.g.doubleclick.net/j/collect?t=dc&aip=1&_r=3&v=1&_v=j99&tid=UA-201728-7&cid=1612772745.1674458367&jid=1428617580&gjid=229363422&_gid=1369269764.1674458367&_u=YEBAAEAAAAAAACAAI~&z=1710802554	h2	481.60099997767	485.34199999995	693	1	200	text/plain	XHR
https://s.swiftypecdn.com/install/v2/config/1u3sJPoCKKXU4zXSs1Q1.json	http/1.1	582.00799999759	675.66199999419	5163	19268	200	application/json	XHR
https://s.swiftypecdn.com/assets/new_embed-91517c1e71e10890e4017d4c45b2dcd307c1d94998b851abdeefd8780de40d90.css	http/1.1	680.88199998601	772.93700000155	34457	91625	200	text/css	Stylesheet
	data	776.47099999012	776.56399999978	0	644	200	image/png	Image
https://cc.swiftype.com/cc.js?engine_key=iR9k2oSyesyattEVzKQy&url=https%3A%2F%2Fwww.calculatorsoup.com%2F	http/1.1	804.99999999302	1037.3379999946	279	43	200	image/gif	Image

Show Details

Network Round Trip Times — 0 ms
High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.

Server Backend Latencies — 0 ms
High server latencies indicate the server is overloaded or has a poor backend performance.

Tasks
Below is a list of the top-level main thread tasks that executed during page load.

Start Time (Ms)	End Time (Ms)
366.195	10.57
404.706	19.37
427.146	7.405
437.096	38.212
527.227	5.186
538.63	46.335
677.422	7.125
784.858	20.89