Volcano.si.edu - SEO Checker

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Overview of the SEO Check
Meta information
61% 
Page quality
69% 
Page structure
79% 
Link structure
25% 
Server
29% 
External factors
100% 
SEO Score
Response time
2.87 s
File size
22.30 kB
Words
543
Media files
23
Number of links
91 internal / 7 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Smithsonian Institution - Global Volcanism Program: Worldwide Holocene Volcano and Eruption Information
The page title should be shorter than 580 pixels. It is 962 pixels long. Optimize title
There are no duplicate words in the title
Meta description
(Critically important)
The Global Volcanism Program (GVP) seeks better understanding of all volcanoes through documenting their eruptions--small as well as large--during the past 12,000 years. The range of volcanic behavior is great enough, and volcano lifetimes are long enough, that we must integrate observations of contemporary activity with historical and geological records of the recent past in order to prepare wisely for the future. The contemporary focus of the GVP is evident in the central role we play in the rapid dissemination of on-going eruption reports from local observers through our monthly Bulletin of the Global Volcanism Network. Our retrospective effort to document Earth's volcanic eruptions of the last 12,000 years has led to development of comprehensive databases and an archive of relevant maps, photos, and documents. Through these two complementary approaches we attempt to provide a context in which any individual volcano's benefits and dangers can be usefully assessed.
The meta description is too long: 6091 pixels from max. 1000 pixels. Optimize description
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 charset encoding (UTF-8) is set correctly.
Doctype
(Nice to have)
The doctype XHTML 1.1 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
DescriptionThe Global Volcanism Program (GVP) seeks better understanding of all volcanoes through documenting their eruptions--small as well as large--during the past 12,000 years. The range of volcanic behavior is great enough, and volcano lifetimes are long enough, that we must integrate observations of contemporary activity with historical and geological records of the recent past in order to prepare wisely for the future. The contemporary focus of the GVP is evident in the central role we play in the rapid dissemination of on-going eruption reports from local observers through our monthly Bulletin of the Global Volcanism Network. Our retrospective effort to document Earth's volcanic eruptions of the last 12,000 years has led to development of comprehensive databases and an archive of relevant maps, photos, and documents. Through these two complementary approaches we attempt to provide a context in which any individual volcano's benefits and dangers can be usefully assessed.
AuthorSmithsonian Institution
Keywordsgvp, volcano, volcanoes, volcanology, volcanism, eruption, eruptive, erupting, Holocene
DC.TitleGlobal Volcanism Program
DC.Title.AlternativeSmithsonian Institution's Global Volcanism Program
DC.Format.MIMEtext/html
DC.Contributor.CorporateNameSmithsonian Institution. Global Volcanism Program.
DC.PublisherGlobal Volcanism Program, National Museum of Natural History, MRC 119, Smithsonian Institution,
DC.Publisher.PlaceWashington, DC:
DC.Date.Issued1996-
DC.DescriptionThe Global Volcanism Program (GVP) seeks better understanding of all volcanoes through documenting their eruptions during the past 12,000 years.
DC.Description.SummaryThis site is the homepage for the Global Volcanism Program at the Smithsonian Institution. It provides current volcanic activity notices, historical volcanic activity reports published by the Smithsonian since 1968, and basic data about over 1500 Holocene volcanoes.
DC.Description.ContentsVolcanic Activity Reports -- Volcanoes of the World
DC.Identifier.URLhttps://volcano.si.edu/
DC.Languageenglish
DC.Subjectvolcano, volcanoes, volcanology, volcanism, eruption, eruptive, erupting, Holocene
DC.Relation.RequiresMode of access: World Wide Web. Host: volcano.si.edu/
langen
twitter:site@SmithsonianGVP
twitter:cardsummary_large_image
og:site_nameSmithsonian Institution | Global Volcanism Program
og:titleGlobal Volcanism Program
og:urlhttps://volcano.si.edu/
og:descriptionThe Global Volcanism Program (GVP) seeks better understanding of all volcanoes through documenting their eruptions during the past 12,000 years.
og:typewebsite
og:imagehttps://volcano.si.edu/includes/images/GVP_LogoBanner.jpg
og:image:secure_urlhttps://volcano.si.edu/includes/images/GVP_LogoBanner.jpg
og:image:typeimage/jpeg
og:image:altSmithsonian GVP Logo
Content-Typeapplication/xhtml+xml; 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 543 words. That's ok.
21.2% of the text are stop words.
The page contains a listing, which indicates a good text layout.
9 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 22.71 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.
This page loads 6 JavaScript files. This may affect the load time negatively.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 11 tags for this page.
Image SEO
(Somewhat important)
2 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

URLAlt attributeTitle
/includes/images/GVP_logo.pngLogo link to homepage
/includes/images/volcano_icon_24.pngNo alt attribute provided
/includes/images/volcano_icon_24.pngNo alt attribute provided
/gallery/photos/GVP-11729.jpgVolcano photo slideshow
/gallery/photos/GVP-06464.jpgVolcano photo slideshow
/gallery/photos/GVP-10168.jpgVolcano photo slideshow
/gallery/photos/GVP-07548.jpgVolcano photo slideshow
/gallery/photos/GVP-03440.jpgVolcano photo slideshow
/gallery/photos/GVP-11185.jpgVolcano photo slideshow
/gallery/photos/GVP-07678.jpgVolcano photo slideshow
/gallery/photos/GVP-03018.jpgVolcano photo slideshow
/gallery/photos/GVP-10825.jpgVolcano photo slideshow
/gallery/thumbs/GVP-11729.jpgThumbnail for Slide 1
/gallery/thumbs/GVP-06464.jpgThumbnail for Slide 2
/gallery/thumbs/GVP-10168.jpgThumbnail for Slide 3
/gallery/thumbs/GVP-07548.jpgThumbnail for Slide 4
/gallery/thumbs/GVP-03440.jpgThumbnail for Slide 5
/gallery/thumbs/GVP-11185.jpgThumbnail for Slide 6
/gallery/thumbs/GVP-07678.jpgThumbnail for Slide 7
/gallery/thumbs/GVP-03018.jpgThumbnail for Slide 8
/gallery/thumbs/GVP-10825.jpgThumbnail for Slide 9
/includes/images/icon2.pngFacebook Icon
/includes/images/icon_twitter.pngTwitter Icon

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 Adwa
H3 Nantaisan
H3 Izalco
H3 Reykjanes
H3 Mauna Loa
H3 Mousa Alli
H3 Cofre de Perote
H3 Jefferson
H3 Pelee
H3 Site & Database News
H3 Who We Are
H5 New Activity / Highlights
H5 Recent Bulletin Reports
H5 Frequently Asked Questions (more questions are available)
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 7 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://volcano.si.edu/IMG-ALT Logo link to homepage
/projects/StudentArtGallery/Student Art Gallery 2024
https://volcano.si.edu/Home
/gvp_currenteruptions.cfmCurrent Eruptions
/reports_weekly.cfmSmithsonian / USGS Weekly Volcanic Activity Report
/reports_bgvn.cfmBulletin of the Global Volcanism Network
/projects/wvar20/Weekly Report 20th Anniversary
/volcanolist_holocene.cfmHolocene Volcano List
/volcanolist_pleistocene.cfmPleistocene Volcano List
/volcanolist_countries.cfmCountry Volcano Lists
/search_volcano.cfmVolcano Search
/search_eruption.cfmEruption Search
/database/webservices.cfmWebservices
/gvp_votw.cfmDatabase Information
/gallery/ImageCollection.cfmImage Collections
/gallery/VideoCollection.cfmVideo Collections
/gallery/ThemeCollection.cfmTheme Collections
/gallery/KeywordCollection.cfmKeyword Collections
/projects/StudentArtGallery/Text duplicate Student Art Gallery 2024
/projects/sthelens40/St. Helens 40th Anniversary
/faq/index.cfmFrequent Questions
/resource_infosources.cfmInformation Sources
/ge/PlacemarkLinks.cfmGoogle Earth Placemarks
/resource_dynamicplanet.cfmThis Dynamic Planet
https://volcano.si.edu/E3/Eruptions, Earthquakes & Emissions Application
/faq/gvp_vnums.cfmVolcano Numbers
/faq/gvp_volcano_naming.cfmVolcano Naming
/gvp_contact.cfmContact Us
/gvp_cite.cfmHow to Cite
/gvp_about.cfmAbout GVP
/gvp_termsofuse.cfmTerms of Use
/reports_weekly.cfmReykjanes
/reports_weekly.cfmWhakaari/White Island
/reports_weekly.cfmSheveluch
/reports_weekly.cfmEtna
/reports_weekly.cfmKanlaon
/reports_weekly.cfmFull Weekly Volcanic Activity Report
/gvp_currenteruptions.cfmCurrent Eruptions (16 Aug 2024):
/faq/index.cfm?question=erupti...Eruptions in 2024 (New/Total):
/faq/index.cfm?question=erupti...Eruptions in 2023 (New/Total):
/faq/index.cfm?question=erupti...Eruptions Avg 2010-2022 (N/T):
/volcano.cfm?vn=221170IMG-ALT Volcano photo slideshow
/volcano.cfm?vn=221170Adwa
/volcano.cfm?vn=283141Text duplicate IMG-ALT Volcano photo slideshow
/volcano.cfm?vn=283141Nantaisan
/volcano.cfm?vn=343030Text duplicate IMG-ALT Volcano photo slideshow
/volcano.cfm?vn=343030Izalco
/volcano.cfm?vn=371020Text duplicate IMG-ALT Volcano photo slideshow
/volcano.cfm?vn=371020Text duplicate Reykjanes
/volcano.cfm?vn=332020Text duplicate IMG-ALT Volcano photo slideshow
/volcano.cfm?vn=332020Mauna Loa
/volcano.cfm?vn=221123Text duplicate IMG-ALT Volcano photo slideshow
/volcano.cfm?vn=221123Mousa Alli
/volcano.cfm?vn=341096Text duplicate IMG-ALT Volcano photo slideshow
/volcano.cfm?vn=341096Cofre de Perote
/volcano.cfm?vn=322020Text duplicate IMG-ALT Volcano photo slideshow
/volcano.cfm?vn=322020Jefferson
/volcano.cfm?vn=360120Text duplicate IMG-ALT Volcano photo slideshow
/volcano.cfm?vn=360120Pelee
https://volcano.si.edu/Slide 1
https://volcano.si.edu/Slide 2
https://volcano.si.edu/Slide 3
https://volcano.si.edu/Slide 4
https://volcano.si.edu/Slide 5
https://volcano.si.edu/Slide 6
https://volcano.si.edu/Slide 7
https://volcano.si.edu/Slide 8
https://volcano.si.edu/Slide 9
/volcano.cfm?vn=344100Masaya
/volcano.cfm?vn=251020Manam
/volcano.cfm?vn=341090Popocatepetl
/volcano.cfm?vn=342030Santa Maria
/volcano.cfm?vn=371032Fagradalsfjall
/volcano.cfm?vn=342090Fuego
/volcano.cfm?vn=352010Reventador
/volcano.cfm?vn=351020Nevado del Ruiz
/volcano.cfm?vn=222120Ol Doinyo Lengai
/volcano.cfm?vn=352050Cotopaxi
/volcano.cfm?vn=243060Tofua
/volcano.cfm?vn=211060Text duplicate Etna
/volcano.cfm?vn=255060Kavachi
/faq/index.cfmquestions
/faq/index.cfm?question=countriesWhich countries have the most volcanoes?
/faq/index.cfm?question=active...How many volcanoes are erupting?
/faq/index.cfm?question=active...How many Holocene volcanoes are there?
/faq/index.cfm?question=histor...Has volcanic activity been increasing?
/faq/index.cfm?question=erupti...What was erupting in the year...?
/faq/index.cfm?question=longes...What volcanoes have had the longest eruptions?
/faq/index.cfm?question=popula...What volcanoes have the most people living nearby?
/faq/index.cfm?question=eov_no...What volcanoes are the most noteworthy?
https://www.facebook.com/Globa...External Subdomain IMG-ALT Facebook Icon
A-TITLE Facebook
https://twitter.com/Smithsonia...External IMG-ALT Twitter Icon
A-TITLE Twitter
https://volcano.si.edu/Subdomain Global Volcanism Program
https://mineralsciences.si.edu/External Subdomain Department of Mineral Sciences
https://naturalhistory.si.edu/External Subdomain National Museum of Natural History
https://www.si.edu/External Subdomain Smithsonian Institution
https://www.si.edu/termsofuse/External Subdomain © 2013 & Terms of Use
A-TITLE Link to Copyright Notice and Terms of Use
https://www.si.edu/privacy/External Subdomain Privacy Policy
A-TITLE Link to Privacy Notice

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://volcano.si.edu/"
HTTP header
(Important)
The HTML page should be transferred using GZip compression.
The web server version is sent within the HTTP header.
The X-powered header is sent within the response header. (unnecessary)
Performance
(Somewhat important)
The page response time is very slow (2.87 seconds). The response time should be less than 0.4 seconds. Slow websites are bad for search engine bots and also result in bad user experience.
This page loads 5 CSS files. This may affect the page load time negatively.
This page loads 6 JavaScript files. This may affect the load time negatively.
The file size of the HTML document is fine (22 kB).

HTTP Response Header

NameValue
content-typetext/html;charset=UTF-8
serverMicrosoft-IIS/10.0
x-powered-byASP.NET
dateThu, 29 Aug 2024 12:46:23 GMT
connectionclose
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 6,008 referring domains.
This page has 1,790,282 backlinks.
This page has backlinks from 2,875 different ip addresses.

Links from Wikipedia

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Robots.txt

User-agent: *
Disallow: /projects/provinces/
Disallow: /projects/eruptionstats/
Disallow: /projects/services/
Disallow: /projects/DailyReport/
Disallow: /projects/StudentArtGallery/

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volcano.si.edu
Smithsonian Institution - Global Volcanism Program: Worldwide Holoc...
The Global Volcanism Program (GVP) seeks better understanding of all volcanoes through documenting their eruptions--small as well as large--during the past 12,000 years. The range of volcanic behavior is great enough, and volcano lifetimes are long enough, that we must integrate observations of contemporary activity with historical and geological records of the recent past in order to prepare wisely for the future. The contemporary focus of the GVP is evident in the central role we play in the rapid dissemination of on-going eruption reports from local observers through our monthly Bulletin of the Global Volcanism Network. Our retrospective effort to document Earth's volcanic eruptions of the last 12,000 years has led to development of comprehensive databases and an archive of relevant maps, photos, and documents. Through these two complementary approaches we attempt to provide a context in which any individual volcano's benefits and dangers can be usefully assessed.

Most important keywords

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

KeywordResultRecheck
Volcano72%Check
Holocene Volcano59%Check
Global58%Check
Global Volcanism58%Check
Global Volcanism Program58%Check
Volcanism56%Check
Program53%Check
Global Volcanism Network53%Check
Volcano List52%Check
Eruption Information52%Check
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