Calculator-1.com - SEO Checker

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Overview of the SEO Check
Meta information
77% 
Page quality
65% 
Page structure
98% 
Link structure
70% 
Server
79% 
External factors
100% 
SEO Score
Response time
0.75 s
File size
30.20 kB
Words
513
Media files
11
Number of links
20 internal / 0 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
The Best Free Online Calculator
The length of the page title is perfect. (288 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
Use the best online calculator for any math calculations on PC and smartphones. The free calculator allows you to quickly and accurately perform arithmetic, calculate percentages, raise to a power or take a root
The meta description is too long: 1293 pixels from max. 1000 pixels. Optimize description
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://calculator-1.com/
There is a valid canonical link specified.
Language
(Somewhat important)
Language detected in text: en
Language defined in HTML: en
Server location: United States of America
The following language is defined by HTML: en
Alternate/Hreflang Links
(Somewhat important)
There are no alternate links specified on this page.
Other meta tags
(Somewhat important)
There is no rel next meta tag on this page.
There is no rel prev meta tag on this page.
Domain
(Somewhat important)
The domain is no subdomain.
The domain length is good.
The domain does not contain non-latin characters.
Page URL
(Somewhat important)
No parameters were found in the URL.
No session ID was found in the URL.
The URL does not have too many subdirectories.
Charset encoding
(Somewhat important)
The charset encoding (UTF-8) is set correctly.
Doctype
(Nice to have)
The doctype HTML 5 is set correctly.
The doctype is placed at first in the HTML code.
Favicon
(Nice to have)
No favicon is linked in the HTML code.

Meta tags

NameValue
viewportwidth=device-width, initial-scale=1.0
descriptionUse the best online calculator for any math calculations on PC and smartphones. The free calculator allows you to quickly and accurately perform arithmetic, calculate percentages, raise to a power or take a root
langen
twitter:cardsummary_large_image
og:titleThe Best Free Online Calculator
og:descriptionUse the best online calculator for any math calculations on PC and smartphones. The free calculator allows you to quickly and accurately perform arithmetic, calculate percentages, raise to a power or take a root
og:urlhttps://calculator-1.com/
og:imagehttps://calculator-1.com/images/screens/calculator_1.png
og:typewebsite
charsetutf-8

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Page quality

Content
(Critically important)
Some words from the page title are not used within the pages content
The average number of words per sentence of 31.43 words is high.
This page contains 513 words. That's ok.
37.6% of the text are stop words.
Words from the H1 heading are used in the page content.
The page contains a listing, which indicates a good text layout.
10 paragraphs were found on this page.
No placeholders texts or images were found.
There are no duplicates on the site.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
This page loads 5 JavaScript files. This may affect the load time negatively.
A viewport "width=device-width, initial-scale=1.0" is provided.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 10 tags for this page.
Image SEO
(Somewhat important)
Alt text (alternative text) is correctly used on all found images.
Social Networks
(Nice to have)
There are only a few social sharing widgets on the page. Make your website popular in social networks with social sharing widgets.
Additional markup
(Nice to have)
No additional page markup was found.
HTTPS
(Somewhat important)
This website uses HTTPS to protect privacy and integrity of the exchanged data.
All included files are also transferred via HTTPS.

Media list

URLAlt attributeTitle
...s/template/calculator-1-logo-1-min-3.pngThe Best Free Online Calculator - quick, easy and handy
/images/social/facebook_icon.pngFacebook
/images/social/twitter_icon.pngTwitter
/images/social/pinterest_icon.pngPinterest
/images/social/linkedIn_icon.pngLinkedIn
/images/social/blogger_icon.pngBlogger
/images/social/skype_icon.pngSkype
/images/social/whats_app_icon.pngWhatsApp
/images/social/share_icon.pngLink to this page
/images/social/favorites_icon.pngAdd to Favorites
/images/template/online-calculator-1.pngThe Best Free Online Calculator

Page structure

H1 heading
(Critically important)
Online Calculator
The H1 heading is too short (17 characters). It should be at least 20 Characters long.
Headings
(Important)
The heading structure is perfect.

Heading structure

Heading levelContent
H1 Online Calculator
H2 Instructions for using the online calculator
H3 Large, easy and convenient online calculator
H3 Keys function
H3 Examples of calculations on the online calculator
H3 Enter commands from the keyboard PC/Mac
H3 Frequently asked questions about the calculator
H3 The History of calculators
H4 Online Calculators
H4 Widgets
H4 Select Language
Some anchor texts are used more than once.
The number of internal links is ok.
None of the anchor texts is too long.
All internal links are not using dynamic parameters.
There are no external links on this page.

Found links on this page

LinkAttributesAnchor text
https://calculator-1.com/IMG-ALT The Best Free Online Calculator - quick, easy and handy
https://calculator-1.com/Online Calculator
/scientific/Scientific Calculator
https://calculator-1.com/simple/Simple Calculator
https://calculator-1.com/root/Root Calculator
/percentage/Percentage Calculator
https://calculator-1.com/widgets/Widgets Calculator
https://calculator-1.com/Text duplicate Online Calculator
/scientific/Text duplicate Scientific Calculator
https://calculator-1.com/simple/Text duplicate Simple Calculator
https://calculator-1.com/root/Text duplicate Root Calculator
/percentage/Text duplicate Percentage Calculator
https://calculator-1.com/widgets/Text duplicate Widgets Calculator
/es/calculadora/Calculadora
/de/rechner/Rechner
/fr/calculatrice/Calculatrice
/it/calcolatrice/Calcolatrice
/tr/hesap-makinesi/Hesap Makinesi
https://calculator-1.com/terms/Calculator-1 Terms of Use
https://calculator-1.com/Calculator-1.com

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://calculator-1.com/"
HTTP header
(Important)
No X-Powered HTTP header is sent.
The web server transmits the web page (HTML) in compressed form.
Performance
(Somewhat important)
The page response time of 0.75 seconds is longer than the recommended limit of 0.4 seconds. A high response time unnecessarily slows down search engine crawling and results in bad user experience as well.
This page loads 5 JavaScript files. This may affect the load time negatively.
This page does not require any CSS files.
The file size of the HTML document is fine (30 kB).

HTTP Response Header

NameValue
dateMon, 28 Jul 2025 03:03:42 GMT
serverApache
content-encodinggzip
varyAccept-Encoding
set-cookie102 Characters
transfer-encodingchunked
content-typetext/html; charset=UTF-8
statuscode200
http_versionHTTP/1.1

External factors

This website has excellent links from other websites.
This page has backlinks from 383 referring domains.
This page has 60,975 backlinks.
This page has backlinks from 262 different ip addresses.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

User-Agent: *
Disallow:
Host: https://calculator-1.com/

Similar sites

Search preview

calculator-1.com
The Best Free Online Calculator
Use the best online calculator for any math calculations on PC and smartphones. The free calculator allows you to quickly and accurately perform arithmetic, calculate percentages, raise to a power or take a root

Most important keywords

Following keywords were found. You can check the keyword optimization of this page for each keyword.

KeywordResultRecheck
Calculator93%Check
Online Calculator82%Check
Online78%Check
free online calculator74%Check
Percentage Calculator68%Check
Free Online67%Check
top or66%Check
right or66%Check
Best Free Online Calculator61%Check
Online Calculators60%Check
Show more keywords and terms

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