Curl.se - SEO Checker

Overview of the SEO Check
Meta information
61% 
Page quality
46% 
Page structure
79% 
Link structure
95% 
Server
91% 
External factors
100% 
SEO Score
Response time
0.05 s
File size
11.10 kB
Words
515
Media files
11
Number of links
69 internal / 10 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
curl
The page title is too short. (32 pixels of 580 max pixel length) Optimize title
The page title is only one word.
There are no duplicate words in the title
Meta description
(Critically important)
The meta description is missing.
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)
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
viewportwidth=device-width, initial-scale=1.0
langen
Content-Typetext/html; charset=UTF-8

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Page quality

Content
(Critically important)
The average number of words per sentence of 43.71 words is high.
This page contains 515 words. That's ok.
14.4% of the text are stop words.
12 paragraphs were found on this page.
The text content is perfect.
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.
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)
4 images have no alt attribute. The content of alt attributes is used by search engines.
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.

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 What is curl used for?
H2 curl supports
H2 Who makes curl?
H2 What is the latest curl?
H2 Where is the code?
Some internal links have dynamic parameters. All internal URLs, which are not marked as nofollow, should not contain dynamic parameters.
Some anchor texts are used more than once.
The number of internal links is ok.
None of the anchor texts is too long.
There are 10 external links on this page.
LinkAttributesAnchor text
https://curl.se/No Text
https://curl.se/download.htmlDownload
https://github.com/curl/curlExternal Browse source
https://curl.se/ch/Changelog
https://curl.se/rc/Release candidates
/docs/releases.htmlRelease log
https://curl.se/tiny/tiny-curl
https://curl.se/docs/Documentation
/docs/projdocs.htmlProject
https://curl.se/docs/faq.htmlFAQ
https://curl.se/docs/help-us.htmlHelp us
/docs/knownbugs.htmlKnown bugs
/docs/knownrisks.htmlKnown risks
https://curl.se/docs/todo.htmlTODO
/docs/protdocs.htmlProtocols
/docs/caextract.htmlCA bundle
/docs/http-cookies.htmlHTTP Cookies
/docs/sslcerts.htmlSSL Certs
https://curl.se/docs/reldocs.htmlReleases
/docs/security.htmlSecurity
https://curl.se/docs/verify.htmlVerify
/docs/versions.htmlVersion numbers
/docs/vulnerabilities.htmlVulnerabilities
/docs/tooldocs.htmlcurl tool
https://curl.se/docs/manpage.htmlman page
/docs/tutorial.htmlTutorial
/docs/httpscripting.htmlHTTP scripting
https://curl.se/trurl/trurl
https://curl.se/wcurl/wcurl
https://curl.se/docs/videos/Videos
https://curl.se/docs/whodocs.htmlWho and Why
https://curl.se/libcurl/libcurl
https://curl.se/libcurl/c/API
/libcurl/c/example.htmlExamples
/libcurl/features.htmlFeatures
/mail/list.cgi?list=curl-libraryMailing list
/libcurl/c/symbols-in-versions...Symbols
https://curl.se/libcurl/using/Using libcurl
/libcurl/c/libcurl-tutorial.htmlText duplicate Tutorial
https://curl.se/gethelp.htmlGet Help
https://lists.haxx.se/listinfo...External Subdomain curl-library
https://lists.haxx.se/listinfo...External Subdomain curl-users
https://curl.se/docs/irc.htmlIRC / chat
https://curl.se/mail/Mailing lists
https://curl.se/book.htmlEverything curl [book]
https://curl.se/docs/videos/Video presentations
https://github.com/curl/curl/i...External Report a bug
/dev/vuln-disclosure.htmlReport security issue
https://curl.se/support.htmlPaid support
https://curl.se/dev/Development
https://curl.se/dev/builds.htmlAutobuilds
/dev/code-review.htmlCode review
/dev/code-style.htmlCode style
/dev/contribute.htmlContribute
https://curl.se/dashboard.htmlDashboard
/dev/deprecate.htmlDeprecate
/dev/internals.htmlInternals
/dev/release-notes.htmlRelease Notes
/dev/release-procedure.htmlRelease Procedure
https://curl.se/dev/roadmap.htmlRoadmap
https://curl.se/dev/runtests.htmlRun Tests
https://curl.se/rfc/Specifications
https://curl.se/dev/testcurl.htmlTest curl
/dev/tests-overview.htmlTests Overview
/dev/vuln-disclosure.htmlVulnerability Disclosure Policy
https://curl.se/sponsors.htmlIMG-ALT Haxx
https://curl.se/support.htmlCommercial support available
https://everything.curl.dev/External Subdomain Everything curl
https://everything.curl.dev/External Subdomain Text duplicate IMG-ALT Everything curl
https://curl.se/donation.htmlSponsor curl financially
https://youtu.be/V5vZWHP-RqUExternal mastering the curl command line tool
https://youtu.be/V5vZWHP-RqUExternal No Text
/docs/copyright.htmlopen source
A-TITLE curl and libcurl are licensed under a MIT/X derivate license
https://curl.se/docs/thanks.htmlthousands of contributors
A-TITLE over 3,000 named contributors
https://curl.se/sponsors.htmlsponsors
https://bestpractices.coreinfr...External Subdomain follows well established open source best practices
A-TITLE Adheres to the Core Intrastructure Initiative's listed best practices at Gold level
https://curl.se/docs/help-us.htmlhelp us
https://curl.se/download.htmldownloads
A-TITLE Binary download packages for your platform!
https://github.com/curl/curlExternal source code from GitHub
A-TITLE git clone the curl code

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://curl.se/"
HTTP header
(Important)
The web server version is sent within the HTTP header.
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 0.05 seconds.
The file size of the HTML document is fine (11 kB).

HTTP Response Header

NameValue
servernginx/1.27.5
content-typetext/html
last-modifiedTue, 14 Apr 2026 10:05:02 GMT
etag"2c81-64f68bb988825"
cache-controlmax-age=60
expiresTue, 14 Apr 2026 10:07:21 GMT
content-security-policyupgrade-insecure-requests; block-all-mixed-content; default-src 'none'; img-src 'self'; style-src 'unsafe-inline' 'self'; form-action 'self'; frame-ancestors 'none'; require-trusted-types-for 'script';
cross-origin-embedder-policyrequire-corp
cross-origin-opener-policysame-origin
cross-origin-resource-policysame-origin
permissions-policyaccelerometer=(), ambient-light-sensor=(), autoplay=(), battery=(), bluetooth=(), browsing-topics=(), camera=(), display-capture=(), document-domain=(), encrypted-media=(), execution-while-not-rendered=(), execution-while-out-of-viewport=(), fullscreen=(), gamepad=(), geolocation=(), gyroscope=(), hid=(), idle-detection=(), local-fonts=(), magnetometer=(), microphone=(), midi=(), payment=(), picture-in-picture=(), publickey-credentials-get=(), screen-wake-lock=(), serial=(), speaker-selection=(), usb=(), web-share=(), xr-spatial-tracking=()
referrer-policystrict-origin
x-content-type-optionsnosniff
x-frame-optionsdeny
strict-transport-securitymax-age=31536000
content-encodingbr
via1.1 varnish, 1.1 varnish
accept-rangesbytes
age0
dateTue, 14 Apr 2026 21:01:19 GMT
x-served-bycache-bma-essb1270054-BMA, cache-fra-etou8220157-FRA
x-cacheHIT, HIT
x-cache-hits1607, 0
x-timerS1776200480.714117,VS0,VE25
varyAccept-Encoding
alt-svch3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=86400
content-length3546
statuscode200
http_versionHTTP/2

External factors

This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 49,835 referring domains.
This page has 1,296,132 backlinks.
This page has backlinks from 24,574 different ip addresses.

Search preview

curl.se
curl

Most important keywords

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

KeywordResultRecheck
curl72%Check
curl used54%Check
curl libcurl52%Check
Top41%Check
libcurl39%Check
tool39%Check
command39%Check
line39%Check
Sponsors39%Check
Command Line39%Check

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