Certificate.transparency.dev - SEO Checker

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Overview of the SEO Check
Meta information
79% 
Page quality
58% 
Page structure
100% 
Link structure
96% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.23 s
File size
13.00 kB
Words
429
Media files
9
Number of links
12 internal / 15 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Certificate Transparency : Certificate Transparency
There are word repetitions in the page title.
The length of the page title is perfect. (454 pixels out of 580 max pixel length)
Meta description
(Critically important)
Certificate Transparency
The meta description is too short. (151 pixels out of 1000 max pixel length) Optimize description
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
No canonical link is 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)
This page is hosted on a subdomain. Use a top level domain for better SEO results.
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)
The favicon is linked correctly.

Meta tags

NameValue
generatorHugo 0.83.1
descriptionCertificate Transparency
viewportwidth=device-width, initial-scale=1
langen
charsetutf-8

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Page quality

Content
(Critically important)
Words from the H1 heading are not used in the page content.
There are only 429 words on this page. Good pages should have about 800 words of useful content.
38.2% of the text are stop words.
The page contains a listing, which indicates a good text layout.
9 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 15.45 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
A viewport "width=device-width, initial-scale=1" is provided.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 9 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
/img/collab-logos/apple.svgApple logo
/img/collab-logos/google.svgGoogle logo
/img/collab-logos/censys.pngCensys logo
/img/collab-logos/cloudflare.svgCloudflare logo
/img/collab-logos/digicert.svgDigicert logo
/img/collab-logos/facebook.pngFacebook logo
/img/collab-logos/lets-encrypt.svgLet's Encrypt logo
/img/collab-logos/sectigo.svgSectigo logo
/img/collab-logos/sslmate.svgSSLMate logo

Page structure

H1 heading
(Critically important)
Working together to detect maliciously or mistakenly issued certificates.
The H1 heading is perfect.
Headings
(Important)
The heading structure is perfect.

Heading structure

Heading levelContent
H1 Working together to detect maliciously or mistakenly issued certificates.
H2 An ecosystem that makes the issuance of website certificates transparent and verifiable.
H3 Certificates, encryption, and secure communication
H3 Certificate Authorities (CAs) play an important role
H3 What if a CA can’t be trusted?
H3 Who watches the watchers?
H3 Independent, reliable logs
H3 Logs are publicly available and monitored
H3 Protect the web by running a CT log
H3 Certificate Transparency
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 15 external links on this page.

Found links on this page

LinkAttributesAnchor text
/Certificate Transparency
/howctworksHow CT works
A-TITLE How Certificate Transparency works
/logsLogs
A-TITLE Certificate Transparency Logs
/monitorsMonitors
A-TITLE Certificate Transparency Monitors
/useragentsUser Agents
A-TITLE Certificate Transparency User Agents
/communityOur story
A-TITLE Story of Certificate Transparency
https://github.com/google/cert...External GitHub
A-TITLE Certificate Transparency GitHub
https://groups.google.com/foru...External Subdomain Google Group
A-TITLE Certificate Transparency Google Group
https://apple.com/External IMG-ALT Apple logo
A-TITLE Apple
https://github.com/chromium/ct...External Anchor IMG-ALT Google logo
A-TITLE Google
https://censys.io/certificatesExternal IMG-ALT Censys logo
A-TITLE Censys
https://developers.cloudflare....External Subdomain IMG-ALT Cloudflare logo
A-TITLE Cloudflare
https://www.digicert.com/certi...External Subdomain IMG-ALT Digicert logo
A-TITLE Digicert
https://www.facebook.com/notes...External Subdomain IMG-ALT Facebook logo
A-TITLE Facebook
https://letsencrypt.org/2019/1...External IMG-ALT Let's Encrypt logo
A-TITLE Let's Encrypt
https://sectigo.com/ssl-certif...External IMG-ALT Sectigo logo
A-TITLE Sectigo
https://sslmate.com/certspotter/External IMG-ALT SSLMate logo
A-TITLE SSLMate
/howctworks/Subdomain Find out more
A-TITLE Find out how Certificate Transparency works
https://github.com/google/cert...External GitHub page
A-TITLE Certificate Transparency GitHub
https://groups.google.com/foru...External Subdomain Google Group.
A-TITLE Certificate Transparency Google Group
/howctworksText duplicate How CT works
A-TITLE How Certificate Transparency works
/communityText duplicate Our story
A-TITLE Story of Certificate Transparency
/logsText duplicate Logs
A-TITLE Certificate Transparency Logs
/monitorsText duplicate Monitors
A-TITLE Certificate Transparency Monitors
/useragentsUser agents
A-TITLE Certificate Transparency User Agents
https://github.com/google/cert...External Text duplicate GitHub
A-TITLE Certificate Transparency Github
https://groups.google.com/foru...External Subdomain Text duplicate Google Group
A-TITLE Certificate Transparency Google Group

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://certificate.transparency.dev/"
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 is excellent with 0.23 seconds.
The file size of the HTML document is fine (13 kB).

HTTP Response Header

NameValue
serverGitHub.com
content-typetext/html; charset=utf-8
last-modifiedMon, 03 Mar 2025 16:01:50 GMT
access-control-allow-origin*
etagW/"67c5d26e-33ec"
expiresThu, 22 May 2025 22:50:40 GMT
cache-controlmax-age=600
content-encodinggzip
x-proxy-cacheMISS
x-github-request-id4C79:AA0E:74C169:75D340:682FA7E8
accept-rangesbytes
age0
dateFri, 23 May 2025 05:39:46 GMT
via1.1 varnish
x-served-bycache-fra-eddf8230034-FRA
x-cacheHIT
x-cache-hits0
x-timerS1747978787.750775,VS0,VE106
varyAccept-Encoding
x-fastly-request-id92156071e8db951e32304b25118dddea845b63ae
content-length3685
statuscode200
http_versionHTTP/2

External factors

This website has excellent links from other websites.
This page has backlinks from 1,553 referring domains.
This page has 941,051 backlinks.
This page has backlinks from 1,038 different ip addresses.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

No valid Robots.txt file was found.

Similar sites

Search preview

certificate.transparency.dev
Certificate Transparency : Certificate Transparency
Certificate Transparency

Most important keywords

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

KeywordResultRecheck
Certificate86%Check
Certificate Transparency78%Check
Transparency73%Check
certificates54%Check
issued50%Check
Working50%Check
detect50%Check
maliciously50%Check
mistakenly50%Check
Logs43%Check
Show more keywords and terms

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