Zerossl.com - SEO Checker

Sign up for free! PDF Export
Overview of the SEO Check
Meta information
93% 
Page quality
75% 
Page structure
79% 
Link structure
92% 
Server
91% 
External factors
100% 
SEO Score
Response time
0.57 s
File size
16.70 kB
Words
371
Media files
2
Number of links
30 internal / 13 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Free SSL Certificates and SSL Tools - ZeroSSL
The length of the page title is perfect. (424 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
Free SSL certificates issued instantly online, supporting ACME clients, SSL monitoring, quick validation and automated SSL renewal via ZeroSSL Bot or REST API.
The meta description is too long: 1003 pixels from max. 1000 pixels. Optimize description
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://zerossl.com/
There is a valid canonical link specified.
Language
(Somewhat important)
Language detected in text: en
Server location: United States of America
The language is not specified in the HTML markup.
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 character encoding is not specified in the HTTP header.
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)
The favicon is linked correctly.

Meta tags

NameValue
descriptionFree SSL certificates issued instantly online, supporting ACME clients, SSL monitoring, quick validation and automated SSL renewal via ZeroSSL Bot or REST API.
keywordsfree ssl certificate, free ssl tools, 90 day ssl certificate, free ssl, free https
authorZeroSSL
robotsindex, follow
viewportwidth=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no
theme-color#4d70d3
msapplication-TileColor#ffffff
msapplication-TileImage/assets/images/zerossl_icon.png
charsetutf-8

Test up to 1.000 webpages of zerossl.com with our free plan!

Try For Free
No trial. It's just free!

Page quality

Content
(Critically important)
There are only 371 words on this page. Good pages should have about 800 words of useful content.
21.6% of the text are stop words.
Keywords used in the page title are also used in the page content. That's good!
The page contains a listing, which indicates a good text layout.
8 paragraphs were found on this page.
No placeholders texts or images were found.
There are no duplicates on the site.
The average number of words per sentence of 18.56 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
A viewport "width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" is provided.
At least one Apple touch icon is specified.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 7 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
/assets/images/zerossl_logo.svgZeroSSL Logo
/assets/images/zerossl_logo_white.svgZeroSSL Logo White

Page structure

H1 heading
(Critically important)
There is no H1 heading specified.
Headings
(Important)
The structure of headings is missing one or more levels. Do not skip heading levels.

Heading structure

Heading levelContent
H2 SSL Protection For Anyone Fast. Reliable. Free.
H4 Easily secure any site by putting SSL management on autopilot, supporting one-step validation and renewal via REST API.
H4 All the SSL security tools you will ever need, simplified and in one place
H5 Create Free SSL Certificate
H5 Trusted By 500,000+ Customers
H6 Explore ZeroSSL
H6 Developers Welcome
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 13 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://zerossl.com/IMG-ALT ZeroSSL Logo
A-TITLE ZeroSSL Home
/features/certificatesSSL Certificates
A-TITLE SSL Certificates
/features/validationOne-Step Validation
A-TITLE SSL Certificate Validation
/features/installationQuick Installation
A-TITLE SSL Certificate Installation
/features/consoleManagement Console
A-TITLE SSL Management Console
/features/monitoringSSL Monitoring
A-TITLE SSL Monitoring
https://zerossl.com/features/acmeACME Automation
A-TITLE ZeroSSL ACME Automation
https://zerossl.com/developerREST API
A-TITLE REST API
/documentation/apiAPI Documentation
A-TITLE API Documentation
/documentation/acmeACME Documentation
A-TITLE ACME Documentation
https://github.com/zerossl/zer...New window External ZeroSSL Bot
A-TITLE ZeroSSL Bot
https://zerossl.com/pricingPricing
A-TITLE Pricing Plans
https://zerossl.com/partnersPartner Program
A-TITLE Partner Program
https://app.zerossl.com/loginExternal Subdomain Log In
A-TITLE Log in to your account
https://app.zerossl.com/signupExternal Subdomain Get Free SSL
A-TITLE Sign up Free
/features/certificatesExplore Features
A-TITLE Explore All SSL Management Features
https://zerossl.com/developerDeveloper Section
A-TITLE SSL Certificate API
https://app.zerossl.com/signupExternal Subdomain Secure Your Website
A-TITLE Get Free SSL Certificates
https://help.zerossl.com/New window External Subdomain Help Center
A-TITLE ZeroSSL Help Center
https://zerossl.com/aboutAbout
A-TITLE About ZeroSSL
https://zerossl.com/pricingText duplicate Pricing
A-TITLE Pricing
https://zerossl.com/contactContact
A-TITLE Contact Us
https://help.zerossl.com/New window External Subdomain Text duplicate Help Center
A-TITLE Help Center
https://zerossl.com/developerText duplicate REST API
A-TITLE SSL REST API
/documentation/apiText duplicate API Documentation
A-TITLE API Documentation
/documentation/acmeText duplicate ACME Documentation
A-TITLE ACME Documentation
https://github.com/zerossl/zer...New window External Text duplicate ZeroSSL Bot
A-TITLE ZeroSSL Bot
/letsencrypt-alternativeZeroSSL vs Let's Encrypt
A-TITLE Let's Encrypt Alternative
/features/certificatesText duplicate SSL Certificates
A-TITLE SSL Certificates
/features/validationText duplicate One-Step Validation
A-TITLE SSL Certificate Validation
/features/installationText duplicate Quick Installation
A-TITLE SSL Certificate Installation
/features/consoleText duplicate Management Console
A-TITLE SSL Management Console
/features/monitoringText duplicate SSL Monitoring
A-TITLE SSL Monitoring
https://zerossl.com/features/acmeText duplicate ACME Automation
A-TITLE ZeroSSL ACME Automation
https://zerossl.com/termsTerms & Conditions
A-TITLE Terms & Conditions
https://zerossl.com/privacyPrivacy Policy
A-TITLE Privacy Policy
https://zerossl.com/cookiesCookie Policy
A-TITLE Cookie Policy
https://sectigo.com/uploads/fi...New window External Certificate Agreement
A-TITLE Sectigo Certificate Subscriber Agreement
https://twitter.com/zerosslHQNew window External A-TITLE ZeroSSL on Twitter
https://www.facebook.com/ZeroS...New window External Subdomain A-TITLE ZeroSSL on Facebook
https://www.linkedin.com/compa...New window External Subdomain A-TITLE ZeroSSL on Linkedin
https://github.com/zerossl/New window External A-TITLE ZeroSSL on Github
https://status.zerossl.com/New window External Subdomain Status Page

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://zerossl.com/"
HTTP header
(Important)
No X-Powered HTTP header is sent.
This page uses GZip for compressed data transmission.
Performance
(Somewhat important)
The page response time of 0.57 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.
The file size of the HTML document is fine (17 kB).

HTTP Response Header

NameValue
dateTue, 14 May 2024 00:04:11 GMT
content-typetext/html
last-modifiedTue, 30 Apr 2024 12:30:00 GMT
expiresTue, 14 May 2024 00:09:11 GMT
cache-controlmax-age=300
cf-cache-statusREVALIDATED
report-to{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=YNRk2iurPS3B6TwIXLPl263TRi2gpB8VfhvMPVuKZy%2FC78pmS6bIYlYnQGhJ4vtJf%2FgE0pH1NDrtRkbFwKnUYRMcSie4C1PB6osHudwmViasAN5AAzzcmq7riHu%2FNw%3D%3D"}],"group":"cf-nel","max_age":604800}
nel{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
varyAccept-Encoding
servercloudflare
cf-ray8836a122d8f568fd-FRA
content-encodinggzip
alt-svch3=":443"; ma=86400
statuscode200
http_versionHTTP/2

External factors

Blacklists
(Nice to have)
This website is not classified "for adult only".
This website has excellent links from other websites.
This page has backlinks from 1,842 referring domains.
This page has 652,117 backlinks.
This page has backlinks from 1,347 different ip addresses.
Facebook popularity
(Somewhat important)
The page has 0 shares and comments on Facebook.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

User-agent: * 
Disallow:

Similar sites

Search preview

zerossl.com
Free SSL Certificates and SSL Tools - ZeroSSL
Free SSL certificates issued instantly online, supporting ACME clients, SSL monitoring, quick validation and automated SSL renewal via ZeroSSL Bot or REST API.

Most important keywords

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

KeywordResultRecheck
SSL78%Check
ZeroSSL76%Check
FREE SSL72%Check
SSL Certificate68%Check
Free66%Check
SSL Certificates66%Check
FREE SSL Certificates66%Check
SSL Tools63%Check
SSL Monitoring61%Check
ZeroSSL Bot60%Check
Show more keywords and terms

Test up to 1.000 webpages of zerossl.com with our free plan!

Try For Free
No trial. It's just free!

Cookie Policy

We use cookies to make our site work and also for analytics and advertising purposes. You can enable or disable optional cookies as desired. See the following links for more information.

Contact | Privacy

We need these so the site can function properly

So we can better understand how visitors use our website

So we can serve you tailored ads and promotions