Gmplib.org - SEO Checker

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Overview of the SEO Check
Meta information
80% 
Page quality
72% 
Page structure
79% 
Link structure
93% 
Server
91% 
External factors
100% 
SEO Score
Response time
0.16 s
File size
19.40 kB
Words
1713
Media files
2
Number of links
42 internal / 10 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
The GNU MP Bignum Library
The length of the page title is perfect. (262 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)
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
langen
Content-Typetext/html; charset=UTF-8

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Page quality

Content
(Critically important)
Some words from the page title are not used within the pages content
This page contains 1713 words. That's ok.
38.3% of the text are stop words.
The page contains a listing, which indicates a good text layout.
32 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 15.52 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No viewpoint tag is provided.
No 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 34 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
https://gmplib.org/heckert_gnu.small.pngGNU head

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
H3 What is GMP?
H3 GMP function categories
H3 Download the latest release of GMP
H3 Reporting bugs in GMP
H3 GMP mailing lists
H3 Status of the current release
H3 Future releases
H5 Issues with GMP 6.3.0:
H5 Issues with GMP 6.2.1:
H5 Issues with GMP 6.2.0:
H5 Issues with GMP 6.1.2:
H5 Issues with GMP 6.1.1:
H5 Issues with GMP 6.1.0:
H5 Issues with GMP 6.0.0:
H5 Issues with GMP 5.1.3:
H5 Issues with GMP 5.1.2:
H5 Issues with GMP 5.1.1:
H5 Issues with GMP 5.1.0:
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 10 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://www.gnu.org/External Subdomain IMG-ALT GNU head
https://gmplib.org/manual/6.3.0 HTML
/gmp-man-6.3.0.pdf6.3.0 PDF
/download/gmp/gmp-6.3.0.tar.xzgmp-6.3.0.tar.xz
https://gmplib.org/gmp6.3Release notes
https://gmplib.org/devel/Developers' corner
https://gmplib.org/gmpbenchResults
/download/misc/gmpbench-0.2.ta...Download benchmark sources
https://gmplib.org/pi-with-gmpCompute billions of digits of π using GMP!
https://gmplib.org/securityGMP server security policy
https://gmplib.org/Anchor What is GMP?
https://gmplib.org/Anchor Function categories
https://gmplib.org/Anchor Download
https://gmplib.org/Anchor Reporting bugs
https://gmplib.org/Anchor Mailing lists
https://gmplib.org/Anchor Current release status
https://gmplib.org/Anchor Future releases
https://www.gnu.org/licenses/l...External Subdomain GNU LGPL v3
https://www.gnu.org/licenses/g...External Subdomain GNU GPL v2
https://www.gnu.org/External Subdomain official GNU web site.
/manual/Contributorslisted in the manual
http://www.mpfr.org/External Subdomain mpfr
/download/gmp/gmp-6.3.0.tar.lzgmp-6.3.0.tar.lz
/download/gmp/gmp-6.3.0.tar.xzText duplicate gmp-6.3.0.tar.xz
/download/gmp/gmp-6.3.0.tar.zstgmp-6.3.0.tar.zst
https://ftp.gnu.org/gnu/gmp/gm...External Subdomain Text duplicate gmp-6.3.0.tar.lz
https://ftp.gnu.org/gnu/gmp/gm...External Subdomain Text duplicate gmp-6.3.0.tar.xz
https://ftp.gnu.org/gnu/gmp/gm...External Subdomain Text duplicate gmp-6.3.0.tar.zst
https://www.gnupg.org/download...External Subdomain GnuPG software
http://www.pgp.net/External Subdomain key server
/devel/repo-usageGMP repositories
/manual/Reporting-Bugsmanual
/mailman/listinfo/gmp-bugsgmplib.org/mailman/listinfo/gmp-bugs
/list-archives/gmp-bugs/gmplib.org/list-archives/gmp-bugs/
/manual/Reporting-BugsText duplicate manual
/mailman/listinfo/gmp-announcegmplib.org/mailman/listinfo/gmp-announce
/list-archives/gmp-announce/gmplib.org/list-archives/gmp-announce/
/mailman/listinfo/gmp-discussgmplib.org/mailman/listinfo/gmp-discuss
/list-archives/gmp-discuss/gmplib.org/list-archives/gmp-discuss/
/mailman/listinfo/gmp-develgmplib.org/mailman/listinfo/gmp-devel
/list-archives/gmp-devel/gmplib.org/list-archives/gmp-devel/
/mailman/listinfo/gmp-commitgmplib.org/mailman/listinfo/gmp-commit
/list-archives/gmp-commit/gmplib.org/list-archives/gmp-commit/
/devel/mini-gmp-statusmini-gmp-status
/repo/gmp-6.1/raw-rev/67d4ee9d...Patch.
/repo/gmp-5.1/raw-rev/d1917262...Text duplicate Patch.
/repo/gmp-5.1/raw-rev/a447c0c5...Text duplicate Patch.
/repo/gmp-5.1/raw-rev/394bdf8f...Text duplicate Patch.
/repo/gmp-5.1/raw-rev/11fbd825...Text duplicate Patch.
/repo/gmp-5.1/raw-rev/ec4d8867...Text duplicate Patch.
https://gmplib.org/oldrel/Info on older GMP releases
https://gmplib.org/devel/GMPngthe GMPng page

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://gmplib.org/"
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 0.16 seconds.
The file size of the HTML document is fine (19 kB).

HTTP Response Header

NameValue
servernginx/1.24.0
dateMon, 17 Feb 2025 02:38:21 GMT
content-typetext/html
content-length6716
last-modifiedTue, 27 Aug 2024 16:45:52 GMT
etag"66ce02c0-1a3c"
content-encodinggzip
accept-rangesbytes
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 4,547 referring domains.
This page has 31,188 backlinks.
This page has backlinks from 2,022 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

User-agent: *
Disallow: /devel/lcov/
Disallow: /devel/tm/
Disallow: /manual-6.0.0/
Disallow: /manual-6.0.0a/
Disallow: /manual-6.1.0/
Disallow: /manual-6.1.1/
Disallow: /manual-6.1.2/
Disallow: /manual-6.2.0/
Disallow: /manual-6.2.1/
Disallow: /repo/
Disallow: /download/

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Most important keywords

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

KeywordResultRecheck
GNU50%Check
GMP46%Check
org46%Check
gmplib46%Check
Library46%Check
Release43%Check
GNU Linux42%Check
GNU GPL42%Check
Current release42%Check
GNU project42%Check
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