Note: this report was generated Over 8 year(s) ago!
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SEO audit: www.pnas.org
Mobile devices
Mobile view
This website is optimal for mobile devices!
Tablet view
This website is optimal for tablet devices!
Mobile appearance
Mobile optimisation
Apple icon
Meta Tag (viewport tag, mobile devices)
Flash content
Google search result list preview
Google preview
Proceedings of the National Academy of Sciences
www.pnas.org/
Error! Missing "meta description" part: the page has no summary description!
Error! Missing "meta description" part: the page has no summary description!
Domain / URL audit
URL
Domain : www.pnas.org/
Length (characters) : 13
Length (characters) : 13
Alexa
Alexa global rank: 13306
IP checking
The 104.232.27.157 ip address is not on the spam list.
SEO audit: Content analysis
Language
We have found the language localisation: ”en”.
Title
Proceedings of the National Academy of Sciences
Length (characters) : 47
Excellent! The title’s length is between 10 and 70 characters.
Excellent! The title’s length is between 10 and 70 characters.
Text / HTML ratio
Ratio : 8%
Error! The text / HTML code ratio is under 15 percent on this website. This value shows that the website has relatively few text content.
Error! The text / HTML code ratio is under 15 percent on this website. This value shows that the website has relatively few text content.
Flash
Excellent! The website does not have any flash contents.
Frame
Excellent! The website does not use iFrame solutions.
Keywords cloud
workings
sustainability
social
anthropology
subject
core
all
latest
systems
mathematics
front
applied
computational
science
inflammation
sciences
blog
issue
sea
chemistry
sessions
matter
brain
economic
yeast
articles
political
study
adhesive
academy
inner
subscribe
evolution
ability
online
biology
papers
highlights
level
physics
courtesy
neuroscience
early
image
press
edition
february
intestines
rise
computer
population
news
global
cell
specific
uncertainty
content
new
pnas
features
Keywords consistency
| Keyword | Content | Title | Description (meta description) | Headings (headings) |
|---|---|---|---|---|
| pnas | 15 | |||
| sciences | 12 | |||
| science | 8 | |||
| early | 6 | |||
| edition | 6 | |||
| articles | 6 |
| Keywords (2 words) | Content | Title | Description (meta description) | Headings (headings) |
|---|---|---|---|---|
| early edition | 6 | |||
| core concepts | 2 | |||
| image courtesy | 2 | |||
| inner workings | 2 | |||
| sustainability science | 2 | |||
| contact feedback | 2 |
Headings (headings)
| H1 | H2 | H3 | H4 | H5 | H6 |
| 0 | 6 | 8 | 0 | 0 | 0 |
H1 is missing
Heading structure in the source code
- <H2> Current Issue
- <H3> From the Cover
- <H2> Early Edition
- <H2> PNAS Science Sessions
- <H3> Brain clarity
- <H2> Featured Image
- <H3> African elephant
- <H2> Front Matter
- <H2> PNAS in the News
- <H3> PNAS Direct to Your Inbox
- <H3> PNAS Portals
- <H3> PNAS Magazine Section and Blog
- <H3> Top Articles
- <H3> Follow PNAS on Facebook
- Expand
Images
We found 23 images on this web page.
Alternate attributes for the following 1 images are missing. Search engines use "alt" tags to understand image content efficiently. We strongly recommend fixing this issue.
Alternate attributes for the following 1 images are missing. Search engines use "alt" tags to understand image content efficiently. We strongly recommend fixing this issue.
SEO audit: Links
Search engine friendly URLs
Error! Not all URLs are SEO friendly on this website!
- http://www.pnas.org/cgi/content/short/112/49/15078?rss=1&ssource=mfr ("Rising morbidity and mortality in midlife among white non-Hispanic Americans in the 21st century")
- http://www.pnas.org/cgi/content/short/112/51/15530?rss=1&ssource=mfr ("News Feature: The neuroscience of poverty")
- http://www.pnas.org/cgi/content/short/112/48/14743?rss=1&ssource=mfr ("Opinion: To feed the world in 2050 will require a global revolution")
- http://www.pnas.org/cgi/content/short/1518445113v1?rss=1&ssource=mfr ("Neolithic and Bronze Age migration to Ireland and establishment of the insular Atlantic genome")
- http://www.pnas.org/cgi/content/short/112/49/E6736?rss=1&ssource=mfr ("Highly efficient Cas9-mediated gene drive for population modification of the malaria vector mosquito Anopheles stephensi")
Underscores in the URLs
Error! Hyphen (-) is a better solution than underscore (_) in the URLs
- http://www.pnas.org/cgi/collection/core_concepts ("Core Concepts")
- http://www.pnas.org/cgi/collection/feature_articles?ck=nck ("Feature Articles")
- http://www.pnas.org/cgi/collection/inner_workings ("Inner Workings")
- http://www.pnas.org/cgi/collection/news_features ("News Features")
- http://www.pnas.org/site/classics/pnas_classics.xhtml ("PNAS Classics")
- http://www.pnas.org/site/misc/pnas_portals.xhtml ("PNAS Portals")
- http://www.pnas.org/cgi/collection/science_culture ("Science and Culture")
- http://www.pnas.org/cgi/collection/significance_statements ("Significance Statements")
- http://www.pnas.org/site/podcasts/podcast_archive.xhtml ("Past Podcasts »")
- http://www.pnas.org/site/media/Featured_Image_African.xhtml ("Featured Image")
- http://www.pnas.org/site/media/Featured_Image_African.xhtml
- Expand
Links
We found a total of 137 different links.
Internal links: 110
External links: 27
Internal links: 110
External links: 27
SEO audit: technology
Redirection (www / not www)
Excellent! The web address is accessible only in one version. The version without www is redirected to the version with www.
Favicon
Error! No favicon is found. Using favicon helps to build a better brand quicker.
Doctype
XHTML 1.0 Strict
Encoding
Perfect! The character encoding is set: UTF-8.
Deprecated HTML
Excellent! No deprecated HTML tags are detected.
Printability
Suggestion! Unfortunately, no printer-friendly CSS found.
404 Page
The website has a 404 error page.
Checking the robots.txt file
There is robots.txt file.
http://www.pnas.org/robots.txt
http://www.pnas.org/robots.txt
| User-agent | Disallow (parts which have been disallowed for the search engines) |
|---|---|
| * |
|
| Googlebot |
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| Fasterfox |
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| msnbot |
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| ia_archiver |
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| Slurp |
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| TurnitinBot |
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| Baiduspider |
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| Infovell |
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| Magnolia |
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| gsa-crawler |
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| HIVmd_robot |
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| python-requests |
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| Expand | |
Sitemap
Error! No sitemap found!
Google Analytics
The website has Google Analytics tracking code.
Google Tag Manager
Suggestion! The website does not use the Google Tag Manager.
Email encryption
Excellent! We have not found any unencrypted email addresses.