Hackage.haskell.org - SEO Checker

Sign up for free! PDF Export
Overview of the SEO Check
Meta information
69% 
Page quality
71% 
Page structure
100% 
Link structure
100% 
Server
91% 
External factors
100% 
SEO Score
Response time
0.04 s
File size
6.80 kB
Words
403
Media files
0
Number of links
22 internal / 17 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Introduction | Hackage
The length of the page title is perfect. (201 pixels out of 580 max pixel length)
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)
https://hackage.haskell.org/
The specified canonical link points to a different page.
Language
(Somewhat important)
Language detected in text: en
Server location: Germany
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)
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
viewportwidth=device-width, initial-scale=1

Automatically check hackage.haskell.org including all subpages at once!

Try for free
Guaranteed free of charge during trial period.

Page quality

Content
(Critically important)
There are only 403 words on this page. Good pages should have about 800 words of useful content.
33.3% 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.
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 11.91 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.
This page does not require any JavaScript files.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 8 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)
The HTTPS protocol for secure data transmission is not used.

Media list

No media files were found.

Page structure

H1 heading
(Critically important)
Hackage: The Haskell Package Repository
The H1 heading is perfect.
Headings
(Important)
The heading structure is perfect.

Heading structure

Heading levelContent
H1 Hackage: The Haskell Package Repository
H2 Package Downloads
H2 Package Uploads
H2 Administrative issues
H2 Reporting problems
H2 The Hackage API
H2 Contributing to development
H2 Credits
The number of internal links is ok.
Every linktext is unique.
None of the anchor texts is too long.
All internal links are not using dynamic parameters.
There are 17 external links on this page.

Found links on this page

LinkAttributesAnchor text
http://hackage.haskell.org/Hackage :: [Package]
/packages/browseBrowse
/packages/recentWhat's new
http://hackage.haskell.org/uploadUpload
/accountsUser accounts
http://www.haskell.org/External Subdomain Haskell
http://hackage.haskell.org/uploadpublish
/package/cabal-installcabal-install
/packages/browseBrowse packages
/packages/searchSearch packages
/packages/recentRecent uploads
/packagesPackages by category
/packages/tagsTags
/packages/deprecatedDeprecated packages
/packages/candidatesCandidate packages
/packages/preferredPreferred and deprecated
/accountsRegister an account
http://hackage.haskell.org/uploadUpload a package
https://cabal.readthedocs.io/e...External Subdomain Anchor Cabal packages
https://cabal.readthedocs.io/e...External Subdomain Anchor sdist
/packages/candidates/uploadpackage candidates
http://hackage.haskell.org/uploadcurated
https://pvp.haskell.org/External Subdomain Package Versioning Policy (PVP)
http://hackage.haskell.org/uploaddocumentation for uploading packages
https://wiki.haskell.org/Takin...External Subdomain Taking over a package
https://wiki.haskell.org/Aband...External Subdomain Abandoning a package
https://wiki.haskell.org/Hacka...External Subdomain Hackage trustees
https://github.com/haskell/cor...External Submitting changes
https://github.com/haskell/hac...External issue tracker
http://status.haskell.org/External Subdomain status.haskell.org
http://auto-status.haskell.org/External Subdomain auto-status.haskell.org
http://hackage.haskell.org/apisite api
/package/hackage-securitySubdomain hackage-security
https://github.com/haskell/hac...External on github
http://www.haskell.org/piperma...External Subdomain cabal-devel
https://www.well-typed.com/External Subdomain Well-Typed
https://haskell.foundation/External Haskell Foundation
https://www.digitalocean.com/External Subdomain DigitalOcean
https://www.fastly.com/External Subdomain Fastly

Server configuration

HTTP redirects
(Critically important)
The checked page does not redirect to another URL.
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 0.04 seconds.
This page only loads 2 CSS files. That's ok.
This page does not require any JavaScript files.
The file size of the HTML document is fine (7 kB).

HTTP Response Header

NameValue
connectionclose
content-length2930
servernginx/1.24.0 (Ubuntu)
content-typetext/html; charset=utf-8
cache-controlpublic, max-age=86400
content-encodinggzip
via1.1 varnish, 1.1 varnish
accept-rangesbytes
age64159
dateMon, 04 Aug 2025 02:13:06 GMT
x-served-bycache-dfw-kdfw8210080-DFW, cache-fra-etou8220039-FRA
x-cacheHIT, HIT
x-cache-hits12, 0
x-timerS1754273587.733120,VS0,VE1
varyAccept-Encoding
statuscode200
http_versionHTTP/1.1

External factors

This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 260 referring domains.
This page has 5,567 backlinks.
This page has backlinks from 221 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

User-agent: AhrefsBot
Disallow: /


User-agent: Yandex
Crawl-delay: 2

Similar sites

Search preview

hackage.haskell.org
Introduction | Hackage

Most important keywords

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

KeywordResultRecheck
Hackage82%Check
Haskell62%Check
Package59%Check
Package Repository56%Check
Repository50%Check
org46%Check
packages39%Check
deleted39%Check
uploads38%Check
issues38%Check
Show more keywords and terms

Automatically check hackage.haskell.org including all subpages at once!

Try for free
Guaranteed free of charge during trial period.

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