Oa.upm.es - SEO Checker

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Overview of the SEO Check
Meta information
80% 
Page quality
72% 
Page structure
78% 
Link structure
52% 
Server
14% 
External factors
100% 
SEO Score
Response time
0.82 s
File size
26.60 kB
Words
428
Media files
17
Number of links
55 internal / 21 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Archivo Digital UPM | Archivo Digital UPM
There are word repetitions in the page title.
The length of the page title is perfect. (374 pixels out of 580 max pixel length)
Meta description
(Critically important)
El Archivo Digital UPM alberga en formato digital la documentacion academica y cientifica (tesis, pfc, articulos, etc..) generada en la Universidad Politecnica de Madrid.Los documentos del Archivo Digital UPM son recuperables desde buscadores: Google, Google Academics, Yahoo, Scirus, etc y desde recolectores OAI: E-ciencia, DRRD, Recolecta (REBIUN-FECYT), Driver, Oaister, etc.
The meta description is too long: 2395 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
Language defined in HTTP-Equiv meta tag: 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 1.0 Transitional 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
keywordsArchivo Digital, UPM, Universidad Politécnica de Madrid, Madrid Technical University, Producción científica, Scientific production, Repositorio institucional, Institutional repository, Tesis, Theses, PFCs, Proyectos Fin de Carrera, Artículos, Articles, Monografías, Monographs, Cream of Science
DescriptionEl Archivo Digital UPM alberga en formato digital la documentacion academica y cientifica (tesis, pfc, articulos, etc..) generada en la Universidad Politecnica de Madrid.Los documentos del Archivo Digital UPM son recuperables desde buscadores: Google, Google Academics, Yahoo, Scirus, etc y desde recolectores OAI: E-ciencia, DRRD, Recolecta (REBIUN-FECYT), Driver, Oaister, etc.
google-site-verificationkIxBd5plHf9J3nn-yLqxHxFYtZj97wf_4wbveigjU1U
y_key97884be13516b6d6
GeneratorEPrints 3.4.4
langen
X-UA-CompatibleIE=edge
Content-Typetext/html; charset=UTF-8
Content-Languageen
charsetUTF-8

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Page quality

Content
(Critically important)
There are only 428 words on this page. Good pages should have about 800 words of useful content.
32.5% of the text are stop words.
Keywords used in the page title are also used in the page content. That's good!
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 17.53 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
This page loads 8 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 9 tags for this page.
Image SEO
(Somewhat important)
1 images have no alt attribute. The content of alt attributes is used by search engines.
Social Networks
(Nice to have)
This page is optimized perfectly for social networks.
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
/style/images/logo-archivo-digital.pngArchivo Digital UPM
https://oa.upm.es/images/flags/es.pngEspañol
https://oa.upm.es/images/flags/aero.pngClear cookies
.../Logotipos/__Recursos/mcin-fecyt-web.jpgNo alt attribute provided
/images/distintivo-fecyt-calidad-pp.jpgDistintivo de calidad de repositorios de acceso abierto de la FECYT
.../public/images/2026-06/ADP_cert_2027.png E54 – FAO AGRIS data provider 2027Seal of Recognition for Active FAO AGRIS Data Providers 2027
https://oa.upm.es/images/InvestigaM.pngLogo InvestigaM (UPM)Datos de Investigación UPM
/style/images/logo-sherpa-romeo.pngLogo Sherpa/RomeoOpen policy finder (antes Sherpa/Romeo): Políticas de copyright de las editoriales y autoarchivo
/style/images/logo-dulcinea.pngLogo DulcineaDulcinea: Políticas editoriales de las revistas españolas
/images/portal_cientifico.pngLogo del Portal Científico UPMPortal Científico UPM
https://oa.upm.es/images/georebiun.pngGEOREBIUN (logo)GEOREBIUN: Geolocalización de la producción académica universitaria
.../images/logo-open-access-politecnica.pngLogo Open AccessOpen access policy at Universidad Politécnica de Madrid
https://oa.upm.es/style/images/derechos.pngOpen AccessVideotutorial : Controla tus derechos, facilita el acceso abierto
/style/images/logo-recolecta.pngLogo de RecolectaRecolecta: Open science harvester
https://oa.upm.es/images/ocw-upm-logo.pngLogo de OpenCourseWare UPMOpenCourseWare de la UPM
/images/universidad_politecnica_logo.pngUniversidad Politécnica de Madrid
/images/biblioteca-logo-pie.pngBiblioteca Universitaria de la UPM

Page structure

H1 heading
(Critically important)
Archivo Digital UPM
The H1 heading is too short (19 characters). It should be at least 20 Characters long.
Headings
(Important)
The structure of headings is missing one or more levels. Do not skip heading levels.

Heading structure

Heading levelContent
H1 Archivo Digital UPM
H2 How to publish in this repository
H2 Author Workshop. Elsevier
H3 Main Menu
H3 Search
H3 Documents
H3 This repository
H3 Additional Information
H4 Grouped by ...
H4 Datos Investigación
H4 Funders
H4 Especial Collections
H4 Other Formats
H4 Social media
H6 In this page
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.
There are 1 links with a trivial anchor text.
The number of internal links is ok.
None of the anchor texts is too long.
There are 21 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://oa.upm.es/Subdomain IMG-ALT Archivo Digital UPM
A-TITLE Home
https://oa.upm.es/Anchor Content
https://oa.upm.es/Anchor Main Menu
https://oa.upm.es/Anchor Secondary menu
https://oa.upm.es/Anchor Additional information
https://oa.upm.es/cgi/users/homeLogin
https://oa.upm.es/cgi/registerCreate Account
/cgi/set_lang?lang=es&referrer...IMG-ALT Español
A-TITLE Español
/cgi/set_lang?referrer=https:/...IMG-ALT Clear cookies
A-TITLE Clear cookies
/cgi/search/advanced/Subdomain Advanced Search
https://oa.upm.es/cgi/registerTrivial anchor text
here
https://www.boe.es/boe/dias/20...External Subdomain Real Decreto 99/2011, de 28 de enero, por el que se regulan las enseñanzas oficiales de doctorado
/docs/carta_permiso_autor_en.pdfNew window this agreement
/help/pfc-tfg.htmlthis
https://oa.upm.es/help/tfm.htmlText duplicate this
/taller_autores/Combined_Autho...How to Get published in an Academic Journal
/taller_autores/MENDELEY_Madri...Mendeley: your research, anywhere
/cgi/search/advancedSearch Repository
https://oa.upm.es/view/subjectsBrowse Repository
/information.htmlAbout this Repository
https://oa.upm.es/about/Subdomain Anchor Publishing
https://oa.upm.es/about/Subdomain About AD
https://oa.upm.es/contact/Subdomain Contact
https://oa.upm.es/view/year/Subdomain Date
https://oa.upm.es/view/subjects/Subdomain Subject
https://oa.upm.es/view/type/Subdomain Document
/view/institution/Subdomain Institution
/view/department/Subdomain Department
https://oa.upm.es/view/degree/Subdomain Degree
https://oa.upm.es/view/masters/Subdomain Masters
https://oa.upm.es/view/creators/Subdomain Author
https://oa.upm.es/view/editors/Subdomain Editor
/view/contributors/Subdomain Director
https://oa.upm.es/view/ods/Subdomain SDG
/cgi/search/advanced/Subdomain Search
/help/datos_investigacion.htmlNew window Datos Investigación
http://www.consorciomadrono.es...New window External Subdomain Plan Gestión Datos
https://pgd.consorciomadrono.es/New window External Subdomain PGDonline
https://edatos.consorciomadron...New window External Subdomain EcienciaDatos
/help/union-europea.htmlSubdomain Unión Europea
/help/gobierno-espana.htmlSubdomain Gobierno de España
/help/comunidad-madrid.htmlSubdomain Comunidad de Madrid
https://v2.sherpa.ac.uk/juliet/External Subdomain Funders' policies
https://oa.upm.es/creamofscience/Subdomain Cream Of Science
/cgi/search/archive/advanced?k...Subdomain TFG/TFM Cooperación
https://oa.upm.es/cgi/latest/Subdomain Last deposited
/cgi/latest_tool?output=AtomAtom
A-TITLE Archivo Digital UPM: Latest records (Atom)
/cgi/latest_tool?output=RSS2RSS 2.0
A-TITLE Archivo Digital UPM: Latest records (RSS 2.0)
/cgi/latest_tool?output=RSSRSS 1.0
A-TITLE Archivo Digital UPM: Latest records (RSS 1.0)
/cgi/oai2?verb=IdentifyOAI 2.0
A-TITLE Archivo Digital UPM: OAI formatted records
https://twitter.com/archivoupmNew window External Tweets por el @archivoupm
https://bsky.app/profile/oa.up...New window External Archivo Digital UPM en Bluesky
https://www.fecyt.es/actualida...New window External Subdomain IMG-ALT Distintivo de calidad de repositorios de acceso abierto de la FECYT
https://www.fao.org/agris/data...New window External Subdomain IMG-ALT E54 – FAO AGRIS data provider 2027
/help/datos_investigacion.htmlNew window IMG-ALT Logo InvestigaM (UPM)
https://openpolicyfinder.jisc....New window External Subdomain IMG-ALT Logo Sherpa/Romeo
https://openpolicyfinder.jisc....New window External Subdomain Check
https://dulcinea.opensciencesp...New window External Subdomain IMG-ALT Logo Dulcinea
https://dulcinea.opensciencesp...External Subdomain Text duplicate Check
https://portalcientifico.upm.es/External Subdomain IMG-ALT Logo del Portal Científico UPM
/help/portal_cientifico.htmlSubdomain Publishing in Archivo Digital from Portal Científico
https://geo.rebiun.org/External Subdomain IMG-ALT GEOREBIUN (logo)
/docs/POLITICA_OA_UPM.pdfIMG-ALT Logo Open Access
https://www.rebiun.org/tutoria...External Subdomain IMG-ALT Open Access
https://recolecta.fecyt.es/New window External Subdomain IMG-ALT Logo de Recolecta
http://ocw.upm.es/New window External Subdomain IMG-ALT Logo de OpenCourseWare UPM
https://www.upm.es/External Subdomain IMG-ALT Universidad Politécnica de Madrid
https://www.upm.es/UPM/BibliotecaExternal Subdomain IMG-ALT Biblioteca Universitaria de la UPM
https://oa.upm.es/Text duplicate Archivo Digital UPM
https://www.upm.es/institucion...External Subdomain Library at the Universidad Politécnica de Madrid
https://oa.upm.es/eprints/EPrints
/cgi/latest_tool?output=AtomText duplicate Atom
/cgi/latest_tool?output=RSS2Text duplicate RSS 2.0
/cgi/latest_tool?output=RSSText duplicate RSS 1.0
https://oa.upm.es/cgi/latest_toolHTML
/cgi/oai2?verb=IdentifyText duplicate OAI 2.0

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://oa.upm.es/"
HTTP header
(Important)
The HTML page should be transferred using GZip compression.
No X-Powered HTTP header is sent.
Performance
(Somewhat important)
The page response time of 0.82 seconds is longer than the recommended limit of 0.4 seconds. A high response time unnecessarily slows down search engine crawling and results in bad user experience as well.
This page loads 8 JavaScript files. This may affect the load time negatively.
This page only loads 1 CSS files. That's ok.
The file size of the HTML document is fine (27 kB).

HTTP Response Header

NameValue
dateFri, 09 Oct 2026 15:00:13 GMT
serverApache
content-security-policyupgrade-insecure-requests;
access-control-allow-origin*
access-control-allow-credentialstrue
access-control-allow-methodsPOST,GET,OPTIONS,DELETE,PUT
access-control-allow-headersContent-Type
access-control-max-age3600
expiresSun, 08 Nov 2026 15:00:13 GMT
cache-controlno-store, no-cache, must-revalidate
varyAccept-Encoding
strict-transport-securitymax-age=16070400; includeSubDomains
content-typetext/html; charset=utf-8
transfer-encodingchunked
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 162 referring domains.
This page has 195 backlinks.
This page has backlinks from 47 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

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            oa.upm.es
Archivo Digital UPM | Archivo Digital UPM

El Archivo Digital UPM alberga en formato digital la documentacion academica y cientifica (tesis, pfc, articulos, etc..) generada en la Universidad Politecnica de Madrid.Los documentos del Archivo Digital UPM son recuperables desde buscadores: Google, Google Academics, Yahoo, Scirus, etc y desde recolectores OAI: E-ciencia, DRRD, Recolecta (REBIUN-FECYT), Driver, Oaister, etc.
Most important keywords

            
Following keywords were found. You can check the keyword optimization of this page for each keyword.
KeywordResultRecheck
UPM95%Check
Digital UPM89%Check
Archivo Digital UPM87%Check
Archivo84%Check
Archivo Digital83%Check
Digital82%Check
Recolecta56%Check
de Madrid53%Check
Universidad52%Check
Google51%Check
  
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