Esawebb.org - SEO Checker

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Overview of the SEO Check
Meta information
61% 
Page quality
48% 
Page structure
60% 
Link structure
55% 
Server
92% 
External factors
100% 
SEO Score
Response time
0.56 s
File size
104.80 kB
Words
405
Media files
25
Number of links
107 internal / 20 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
ESA/Webb
The page title is too short. (99 pixels of 580 max pixel length) Optimize title
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 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
viewportwidth=device-width, initial-scale=1
google-site-verificationKTjYtxjG6PEMU6XMF7LY4nMnJ7MXxYaNzVY6SYTo1Qc
author[email protected]
langen
twitter:cardsummary
og:titleESA/Webb Space Telescope
og:descriptionThe ESA page for the James Webb Space Telescope, the space-based observatory that has revolutionised modern astronomy.
og:imagehttp://cdn.esawebb.org/archives/images/screen/ann2203a.jpg
og:image:secure_urlhttps://cdn.esawebb.org/archives/images/screen/ann2203a.jpg
X-UA-CompatibleIE=edge
charsetutf-8

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Page quality

Content
(Critically important)
No paragraphs were detected.
There are only 405 words on this page. Good pages should have about 800 words of useful content.
23.7% of the text are stop words.
The page contains a listing, which indicates a good text layout.
No placeholders texts or images were found.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
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 8 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
/assets/images/esa-jwst-logo.pngESA/Webb logo
/assets/images/esa-logo.pngESA logo
/assets/images/esa-jwst-logo.pngESA logo
...archives/images/wallpaper1/weic2416a.jpgWebb finds plethora of carbon molecules around young star
...archives/images/wallpaper1/weic2414a.jpgWebb cracks case of inflated exoplanet
...archives/images/wallpaper1/weic2413a.jpgWebb detects most distant black hole merger to date
...archives/images/wallpaper1/weic2412a.jpgWebb hints at possible atmosphere surrounding rocky exoplanet
...archives/images/banner1920/weic2416a.jpgWebb finds plethora of carbon molecules around young star
...archives/images/banner1920/weic2414a.jpgWebb cracks case of inflated exoplanet
...archives/images/banner1920/weic2413a.jpgWebb detects most distant black hole merger to date
...archives/images/banner1920/weic2412a.jpgWebb hints at possible atmosphere surrounding rocky exoplanet
...archives/images/wallpaper1/potm2405a.jpgFireworks of stellar starbursts
...archives/images/wallpaper1/potm2404a.jpgStar-studded cluster
...archives/images/wallpaper1/potm2403a.jpgA duo of starbursts in I Zwicky 18
...archives/images/wallpaper1/potm2402a.jpgA galactic treasury
...archives/images/wallpaper1/weic2311a.jpgCassiopeia A (MIRI Image)
.../archives/images/wallpaper1/ann2303a.jpgCover page of the 2024 ESA/Hubble and ESA/Webb calendar
...archives/images/wallpaper1/weic2221a.jpgIllustration (Artist’s Impression) of WASP-39 b and Its Star
.../archives/images/wallpaper1/ann2301a.jpgShort-wavelength NIRCam Orion mosaic in ESASky
....org/archives/images/screen/ann2201a.jpgSPACE SPARKS VIDEO SERIES
....org/archives/images/screen/ann2203a.jpgESA/HUBBLE/WEBB SCIENCE NEWSLETTER
...org/archives/images/screen/weic2210a.jpgWEBB'S FIRST IMAGES RELEASE: JULY, 2022
...chives/images/screen/ESAHubbleWebb-1.jpgTake a look to our newsletters
.../archives/images/screen/Updates-from.jpgSuscribirse a Webb News

Page structure

H1 heading
(Critically important)
There is no H1 heading specified.
Headings
(Important)
Some headings occur twice on the page.
The structure of headings is missing one or more levels. Do not skip heading levels.
There are 26 headings on the page. The amount of headings should be in a more proper relation to the amount of text.

Heading structure

Heading levelContent
H4 Press Releases
H4 Picture of the Month
H4 Announcements
H4 SPACE SPARKS VIDEO SERIES
H4 ESA/HUBBLE/WEBB SCIENCE NEWSLETTER
H4 WEBB'S FIRST IMAGES RELEASE: JULY, 2022
H4 ESA/Webb Facebook
H4 ESA/Webb on Twitter
H4 ESA/Webb Copyright
H4 Subscribe to Webb News
H5 Webb finds plethora of carbon molecules around young star
H5 Webb cracks case of inflated exoplanet
H5 Webb detects most distant black hole merger to date
H5 Webb hints at possible atmosphere surrounding rocky exoplanet
H5 Webb finds plethora of carbon molecules around young star Duplicate text
H5 Webb cracks case of inflated exoplanet Duplicate text
H5 Webb detects most distant black hole merger to date Duplicate text
H5 Webb hints at possible atmosphere surrounding rocky exoplanet Duplicate text
H5 Fireworks of stellar starbursts
H5 Star-studded cluster
H5 A duo of starbursts in I Zwicky 18
H5 A galactic treasury
H5 Royal Astronomical Society Group Achievement Award for JWST-MIRI Team
H5 Announcement of the 2024 ESA Hubble and Webb Calendar
H5 Announcement of Opportunity for ESA-appointed representatives to join the NASA-GOMAP START team for the Habitable Worlds Observatory
H5 Webb’s wide-angle view of the Orion Nebula is released in ESASky
Some internal link anchor texts are too long.
Some anchor texts are used more than once.
1 links don't have an anchor text.
There are 12 links with a trivial anchor text.
The number of internal links is ok.
All internal links are not using dynamic parameters.
There are 20 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://esawebb.org/IMG-ALT ESA/Webb logo
https://esahubble.org/subscribe/External Subscribe to Webb News
https://esawebb.org/search/No Text
https://www.esa.int/External Subdomain IMG-ALT ESA logo
https://esawebb.org/Home
https://esawebb.org/news/News
https://esawebb.org/news/Press Releases
/news/archive/year/2024/2024
/news/archive/year/2023/2023
/news/archive/year/2022/2022
/news/archive/year/2021/2021
/announcements/Announcements
/announcements/archive/year/2024/Text duplicate 2024
/announcements/archive/year/2023/Text duplicate 2023
/announcements/archive/year/2022/Text duplicate 2022
https://esawebb.org/images/potm/Picture of the Month
/images/potm/archive/year/2024/Text duplicate 2024
/images/potm/archive/year/2023/Text duplicate 2023
/images/potm/archive/year/2022/Text duplicate 2022
https://esawebb.org/images/Images
https://esawebb.org/images/All images
https://esawebb.org/images/potm/Text duplicate Picture of the Month
https://esawebb.org/videos/Videos
/about/general/mision-overview/General
/about/general/mision-overview/Mission Overview
/about/general/fact-sheet/Fact Sheet
/about/instruments/miri/MIRI
/about/instruments/nirspec/NIRSpec
/about/instruments/nircam-niriss/NIRCam & NIRISS
/about/general/sun-shield/Sun Shield
/about/general/mirrors/Mirrors
/about/general/orbit/Orbit
/about/general/spectroscopy-wi...Spectroscopy with Webb
/about/general/webb-and-other-...Webb & Other Space Telescopes
/about/general/webb-scientific...Webb's Scientific Method
/about/general/image-processing/Image Processing
/about/webb-and-europe/interna...International Collaboration
/about/webb-europe/ariane-lauc...Ariane Launcher
/about/webb-europe/outreach-team/ESA/Webb Outreach Team
/about/science/other-worlds/Other Worlds
/about/science/lifecycle-of-st...The Lifecycle of Stars
/about/science/the-early-unive...The Early Universe
/about/science/galaxies-over-t...Galaxies Over Time
https://esawebb.org/about/faqFAQ
https://esawebb.org/initiatives/Initiatives
/initiatives/webbs-first-images/Webb's First Images
https://esawebb.org/wordbank/Word Bank
/initiatives/public-resources/Public Resources
/initiatives/public-resources/...Virtual Meeting Backgrounds
https://www.esa.int/About_Us/E...External Subdomain ESA Webb Seeing Farther Brochure
/products/calendars/Calendars
/products/calendars/archive/ye...Text duplicate 2024
/products/calendars/archive/ye...Text duplicate 2023
https://esawebb.org/newsletters/ESA/Webb Newsletters
/newsletters/webbnews/ESA/Webb News
/newsletter/science/ESA/Hubble/Webb Science Newsletter
/forscientists/announcement/Science Announcements
/media-images-videos/Media
https://esawebb.org/copyright/Usage of ESA/Webb Images & Videos
/press-mailinglist/Subscribe to the Media Newsletter
https://esawebb.org/contact/Contact
https://www.facebook.com/ESAWebb/New window External Subdomain No Text
https://twitter.com/ESA_WebbNew window External No Text
https://www.instagram.com/esaw...New window External Subdomain No Text
https://www.youtube.com/user/H...New window External Subdomain No Text
https://www.linkedin.com/compa...New window External Subdomain No Text
https://www.flickr.com/photos/...New window External Subdomain No Text
https://giphy.com/esawebbNew window External No Text
https://esawebb.org/news/Text duplicate Press Releases
/news/weic2416/IMG-ALT Webb finds plethora of carbon molecules around young star
/news/weic2416/Text duplicate Webb finds plethora of carbon molecules around young star
/news/weic2416/Trivial anchor text
Read More
/news/weic2414/IMG-ALT Webb cracks case of inflated exoplanet
/news/weic2414/Text duplicate Webb cracks case of inflated exoplanet
/news/weic2414/Text duplicate Trivial anchor text
Read More
/news/weic2413/IMG-ALT Webb detects most distant black hole merger to date
/news/weic2413/Text duplicate Webb detects most distant black hole merger to date
/news/weic2413/Text duplicate Trivial anchor text
Read More
/news/weic2412/IMG-ALT Webb hints at possible atmosphere surrounding rocky exoplanet
/news/weic2412/Text duplicate Webb hints at possible atmosphere surrounding rocky exoplanet
/news/weic2412/Text duplicate Trivial anchor text
Read More
https://esawebb.org/news/Explore all Press Releases
/news/weic2416/Webb finds plethora of carbon molecules around young star 6 June 2024 — weic2416
IMG-ALT Webb finds plethora of carbon molecules around young star
/news/weic2414/Webb cracks case of inflated exoplanet 20 May 2024 — weic2414
IMG-ALT Webb cracks case of inflated exoplanet
/news/weic2413/Webb detects most distant black hole merger to date 16 May 2024 — weic2413
IMG-ALT Webb detects most distant black hole merger to date
/news/weic2412/Webb hints at possible atmosphere surrounding rocky exoplanet 8 May 2024 — weic2412
IMG-ALT Webb hints at possible atmosphere surrounding rocky exoplanet
https://esawebb.org/images/potm/Text duplicate Picture of the Month
/images/potm2405a/IMG-ALT Fireworks of stellar starbursts
/images/potm2405a/Text duplicate Fireworks of stellar starbursts
/images/potm2405a/Text duplicate Trivial anchor text
Read More
/images/potm2404a/IMG-ALT Star-studded cluster
/images/potm2404a/Text duplicate Star-studded cluster
/images/potm2404a/Text duplicate Trivial anchor text
Read More
/images/potm2403a/IMG-ALT A duo of starbursts in I Zwicky 18
/images/potm2403a/Text duplicate A duo of starbursts in I Zwicky 18
/images/potm2403a/Text duplicate Trivial anchor text
Read More
/images/potm2402a/IMG-ALT A galactic treasury
/images/potm2402a/Text duplicate A galactic treasury
/images/potm2402a/Text duplicate Trivial anchor text
Read More
/announcements/Text duplicate Announcements
/announcements/ann2401/IMG-ALT Cassiopeia A (MIRI Image)
/announcements/ann2401/Royal Astronomical Society Group Achievement Award for JWST-MIRI Team
/announcements/ann2401/Text duplicate Trivial anchor text
Read More
/announcements/ann2303/IMG-ALT Cover page of the 2024 ESA/Hubble and ESA/Webb calendar
/announcements/ann2303/Announcement of the 2024 ESA Hubble and Webb Calendar
/announcements/ann2303/Text duplicate Trivial anchor text
Read More
/announcements/ann2302/IMG-ALT Illustration (Artist’s Impression) of WASP-39 b and Its Star
/announcements/ann2302/Announcement of Opportunity for ESA-appointed representatives to join the NASA-GOMAP START team for the Habitable Worlds Observatory
/announcements/ann2302/Text duplicate Trivial anchor text
Read More
/announcements/ann2301/IMG-ALT Short-wavelength NIRCam Orion mosaic in ESASky
/announcements/ann2301/Webb’s wide-angle view of the Orion Nebula is released in ESASky
/announcements/ann2301/Text duplicate Trivial anchor text
Read More
/videos/archive/category/space...ESA/Webb Space Sparks
IMG-ALT SPACE SPARKS VIDEO SERIES
/newsletter/science/ESA/Hubble/JWST Science Newsletter - April 2022
IMG-ALT ESA/HUBBLE/WEBB SCIENCE NEWSLETTER
/initiatives/webbs-first-images/12 July 2022
IMG-ALT WEBB'S FIRST IMAGES RELEASE: JULY, 2022
https://twitter.com/ESA_Webb?r...External Tweets by ESA_Webb
https://esawebb.org/copyright/IMG-ALT Take a look to our newsletters
https://esawebb.org/newsletters/IMG-ALT Suscribirse a Webb News
https://www.facebook.com/ESAWebb/New window External Subdomain No Text
https://twitter.com/ESA_WebbNew window External No Text
https://www.instagram.com/esaw...New window External Subdomain No Text
https://www.youtube.com/user/H...New window External Subdomain No Text
https://www.linkedin.com/compa...New window External Subdomain No Text
https://www.flickr.com/photos/...New window External Subdomain No Text
https://giphy.com/esawebbNew window External No Text
https://www.encisosystems.com/External Subdomain Enciso Systems
https://www.cdn77.com/External Subdomain Accelerated by CDN77

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://esawebb.org/"
HTTP header
(Important)
No X-Powered HTTP header is sent.
This page uses GZip for compressed data transmission.
Performance
(Somewhat important)
The page response time of 0.56 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.
The file size of the HTML document is fine (105 kB).

HTTP Response Header

NameValue
dateThu, 13 Jun 2024 10:44:45 GMT
content-typetext/html; charset=utf-8
expiresThu, 13 Jun 2024 10:46:35 GMT
cache-controlmax-age=300
varyAccept-Encoding
access-control-allow-origin*
access-control-allow-methodsGET, POST, PUT, OPTIONS, HEAD, PATCH, DELETE
access-control-allow-headersAuthorization, Origin, X-Requested-With, Content-Type, Accept
cf-cache-statusDYNAMIC
report-to{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=3Ra3XviNya173FJ%2BAiFQa4MxXYM4ecFJ0DBIIcF5JJp0zzWaYen%2FkHtu%2BmZducLt%2BVRb1%2F0FyqPyG%2BnvFFEAQLnUaAffsznPDC7O3rINBchkBLCRszbbNMPkY42Vuw%3D%3D"}],"group":"cf-nel","max_age":604800}
nel{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
servercloudflare
cf-ray89317cb3ed826958-FRA
content-encodinggzip
alt-svch3=":443"; ma=86400
statuscode200
http_versionHTTP/2

External factors

Blacklists
(Nice to have)
This website is not classified "for adult only".
This website has excellent links from other websites.
This page has backlinks from 3,426 referring domains.
This page has 490,454 backlinks.
This page has backlinks from 1,921 different ip addresses.
Facebook popularity
(Somewhat important)
The page has 266 shares and comments on Facebook.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

No valid Robots.txt file was found.

Similar sites

Search preview

esawebb.org
ESA/Webb

Most important keywords

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

KeywordResultRecheck
Webb61%Check
Hubble Webb50%Check
Webb News49%Check
Webb Space49%Check
Hubble46%Check
date46%Check
News44%Check
exoplanet44%Check
starbursts44%Check
finds44%Check
Show more keywords and terms

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