Biojava.org - SEO Checker

Overview of the SEO Check
Meta information
92% 
Page quality
59% 
Page structure
95% 
Link structure
96% 
Server
92% 
External factors
100% 
SEO Score
Response time
0.21 s
File size
8.70 kB
Words
255
Media files
7
Number of links
16 internal / 12 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
BioJava
The page title is too short. (73 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 open-source Java library for bioinformatics
The length of the meta description is perfect. (293 pixels out of 1000 max pixel length)
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://biojava.org/
There is a valid canonical link specified.
Language
(Somewhat important)
Language detected in text: en
Server location: United States of America
One or more of the specified languages are not ISO standard (en, en-us, de, etc.)
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 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)
No favicon is linked in the HTML code.

Meta tags

NameValue
viewportwidth=device-width, initial-scale=1
descriptionThe open-source Java library for bioinformatics
charsetutf-8

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Page quality

Content
(Critically important)
There are only 255 words on this page. Good pages should have about 1,000 words of useful content.
22.4% of the text are stop words.
The page contains a listing, which indicates a good text layout.
4 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 16.57 words is good.
Frames
(Critically important)
This website does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
This website loads 6 javascript files. This may affect the load time negatively.
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 6 tags for this page.
Image SEO
(Somewhat important)
5 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.

Media list

Page structure

H1 heading
(Critically important)
The H1 heading is empty
Headings
(Important)
Some headings do not have any content.

Heading structure

Heading levelContent
H1 Empty heading
H2 BioJava
H2 Open source
H2 Protein structures
H2 Biological sequences
H2 Please cite
H2 Get in touch
H2 Learn More
H3 Tutorial
H3 CookBook
H3 Javadoc API
H3 Release 5.3.0
H3 Wiki
H3 Legacy Javadoc API
Some anchor texts are used more than once.
1 links don't have an anchor text.
The amount of internal links is ok.
None of the anchor texts is too long.
All internal links don't have dynamic parameters.
There are 12 external links on this page.
LinkAttributesAnchor text
https://biojava.org/index.htmlNo Text
https://biojava.org/Anchor Menu
https://biojava.org/index.htmlHome
https://biojava.org/wiki/AboutAbout
/wiki/BioJava:GetStartedGet started
/wiki/DocumentationDocumentation
https://biojava.org/wikiWiki pages
/wiki/GetInvolvedGet involved
https://biojava.org/wiki/FAQsFAQs
/wiki/BioJava:GetStartedText duplicate Get started
https://biojava.org/Anchor Learn More
https://github.com/biojava/bio...External GitHub project
https://journals.plos.org/plos...External Subdomain PLOS Computational Biology (2019) 15 (2):e1006791.
https://doi.org/10.1371/journa...External IMG-ALT doi
http://www.ncbi.nlm.nih.gov/pu...External IMG-ALT pubmed
https://github.com/biojava/bio...External GitHub
http://lists.open-bio.org/mail...External Subdomain BioJava mailing list
https://github.com/biojava/bio...External Tutorial
/wiki/BioJava:CookBook4.0Cookbook
https://biojava.org/docs/apiJavadoc API
https://mvnrepository.com/arti...External Maven Central
https://biojava.org/wiki.htmlView wiki
/docs/api1.9.4/View 1.9.4 API
/wiki/BioJava:GetStartedText duplicate Get started
https://github.com/biojava/bio...External Source code
https://github.com/biojavaNew window External github
https://github.com/biojava/bio...External Edit this page
http://html5up.net/New window External HTML5 UP

Server configuration

HTTP redirects
(Critically important)
This website redirects to "https://biojava.org/"
HTTP header
(Important)
No X-Powered HTTP header is sent.
This website uses GZip for compressed data transmission.
Performance
(Somewhat important)
This website loads 6 javascript files. This may affect the load time negatively.
The page response time is excellent with 0.21 seconds.
This website only loads 1 CSS files. That's ok.
The file size of the HTML document is fine (9 kB).

HTTP Response Header

NameValue
connectionkeep-alive
content-length3033
content-typetext/html; charset=utf-8
serverGitHub.com
last-modifiedWed, 11 Nov 2020 18:26:48 GMT
etagW/"5fac2ce8-22c8"
access-control-allow-origin*
expiresMon, 16 Nov 2020 17:31:06 GMT
cache-controlmax-age=600
content-encodinggzip
x-proxy-cacheMISS
x-github-request-id1EF2:13936:1B869A0:1D2F0FE:5FB2B502
accept-rangesbytes
dateMon, 16 Nov 2020 17:21:06 GMT
via1.1 varnish
age0
x-served-bycache-fra19157-FRA
x-cacheMISS
x-cache-hits0
x-timerS1605547266.341482,VS0,VE89
varyAccept-Encoding
x-fastly-request-id6fbae8f00fa5a76613715b703cb8bf26d40ad519
statuscode200
http_versionHTTP/1.1

External factors

Blacklists
(Critically important)
This website is not classified "for adult only".
This website is not listed on the Shallalist.
This website is referenced by wikipedia.
This website has excellent links from other websites.
This website has backlinks from 430 referring domains.
This website has 77,054 backlinks.
This website has backlinks from 405 different ip addresses.
Facebook popularity
(Somewhat important)
This website is a little bit popular on facebook.
Listed on Webwiki
(Nice to have)
This website is listed on Webwiki.

Robots.txt

User-agent: *
Disallow: /css/
Disallow: /wiki/Special:*
Disallow: /wiki/Talk:*

Facebook popularity

Shares / Likes / Comments
19

Only the data for the given URL is shown. We cannot determine the social actions for a linked fan page.

Search preview

biojava.org
BioJava
The open-source Java library for bioinformatics

Most important keywords

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

KeywordResultRecheck
Java70%Check
BioJava66%Check
open-source Java library63%Check
Java Tutorial62%Check
source55%Check
Open Source55%Check
bioinformatics51%Check
open-source51%Check
library51%Check
Source Code45%Check

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