Analyze your website with Seobility:

You have 3 of 3 checks left today.

Asteroidday.org - SEO Checker

Overview of the SEO Check

Meta information

100%

Page quality

78%

Page structure

58%

Link structure

37%

Server

91%

External factors

100%

SEO Score

SEO Score Widget

Response time

0.03 s

File size

420.90 kB

Words

552

Media files

Number of links

110 internal / 14 external

Task list of SEO Improvements 4 Tasks

Add a H1 heading to this page.Very important!
The page title should be better suited to the content of the page.Important!
Use good alternative descriptions (alt attributes) for your images.Important!
Review and improve the heading structure.Tip!

Meta specifications 100% achieved

Title

(Critically important)

Asteroid Day - UN-sanctioned global awareness campaign

The length of the page title is perfect. (522 pixels out of 580 max pixel length)

There are no duplicate words in the title

Meta Title

Meta description

(Critically important)

Asteroid Day is a global awareness campaign where people from around the world come together to learn about asteroids, and how we can protect our planet.

The length of the meta description is perfect. (973 pixels out of 1000 max pixel length)

Meta Description

Crawlability

(Critically important)

There are no problems in accessing the website.

Search Engine Crawlers

Canonical URL

(Important)

https://asteroidday.org/

There is a valid canonical link specified.

Canonical Tag

Language

(Somewhat important)

Language detected in text: en

Language defined in HTML: en-us

Server location: United States of America

The following language is defined by HTML: en-us

Declaring language in HTML

Alternate/Hreflang Links

(Somewhat important)

There are no alternate links specified on this page.

Hreflang

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.

Meta Tags

Domain

(Somewhat important)

The domain is no subdomain.

The domain length is good.

The domain does not contain non-latin characters.

Domain for SEO

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.

SEO-friendly URLs

Charset encoding

(Somewhat important)

The charset encoding (UTF-8) is set correctly.

Character Encoding

Doctype

(Nice to have)

The doctype HTML 5 is set correctly.

The doctype is placed at first in the HTML code.

HTML Doctype

Favicon

(Nice to have)

The favicon is linked correctly.

Favicon

Meta tags

Name	Value
robots	index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1
description	Asteroid Day is a global awareness campaign where people from around the world come together to learn about asteroids, and how we can protect our planet.
google-site-verification	reAD2Q-ztMtyDyyegvMKkKEN_niMb2CdLtll4BGpOmM
viewport	width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no
application-name	Asteroid Day
generator	WP Rocket 3.18.3
tec-api-version	v1
tec-api-origin	https://asteroidday.org
msapplication-TileImage	https://asteroidday.org/wp-content/uploads/2018/04/asteroid-day-favicon.png
article:publisher	http://www.facebook.com/asteroidday
article:modified_time	2025-05-15T12:04:21+00:00
lang	en-us
twitter:card	summary_large_image
twitter:title	Asteroid Day
twitter:description	Asteroid Day is a UN-sanctioned global awareness campaign. Join our Asteroid Day LIVE broadcast, 48 hours of content and commentary from around the world, hosted by Prof. Brian Cox.
twitter:image	https://asteroidday-uploads.s3.eu-central-1.amazonaws.com/wp-content/uploads/2019/06/11183304/AD_Banner_01_twitter.jpg
twitter:site	@asteroidday
og:locale	en_US
og:type	website
og:title	Home - June 2024
og:description	Empty
og:url	https://asteroidday.org/
og:site_name	Asteroid Day
og:image	https://asteroidday-uploads.s3.eu-central-1.amazonaws.com/wp-content/uploads/2023/10/26152407/home-page-ft-image-1024x576.jpg
og:image:width	1200
og:image:height	600
og:image:type	image/jpeg
charset	UTF-8

Automatically check asteroidday.org including all subpages at once!

Check 300+ SEO parameters on every page of your website
Easy troubleshooting with optimization suggestions
Automated check for keyword optimization

Try for free
Guaranteed free of charge during trial period.

Page quality 78% achieved

Content

(Critically important)

Some words from the page title are not used within the pages content

This page contains 552 words. That's ok.

23.2% 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 15.85 words is good.

Content is King

Frames

(Critically important)

This page does not use a frameset.

Frames and framesets

Mobile optimization

(Somewhat important)

A viewport "width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" is provided.

At least one Apple touch icon is specified.

Mobile Optimization

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.

Strong and Bold Tags

Image SEO

(Somewhat important)

41 images have no alt attribute. The content of alt attributes is used by search engines.

Image SEO

This page is optimized perfectly for social networks.

Social Sharing

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.

HTTPS

Media list

URL	Alt attribute	Title
...25/05/08102407/AD-Website-10Y-Logo-1.png	Asteroid Day
...25/05/08102407/AD-Website-10Y-Logo-1.png	Asteroid Day
...25/05/08102407/AD-Website-10Y-Logo-1.png	Asteroid Day
...25/05/08102407/AD-Website-10Y-Logo-1.png	Asteroid Day
...25/05/08102407/AD-Website-10Y-Logo-1.png	Asteroid Day
...024/11/19110010/LSA_high-res_white-2.png	No alt attribute provided
...oid-Foundation-white-white-1-300x179.png	No alt attribute provided
.../03/27145818/Untitled-design-300x180.png	No alt attribute provided
...27150317/SnT-Logo-AD-website-300x180.png	No alt attribute provided
...5/10091013/FEDIL_GLAE_Logo-1-300x180.png	No alt attribute provided
...uploads/2023/03/25085044/5-1-300x180.png	No alt attribute provided
...s/2025/05/15135946/Report-Pictures-9.png	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	Save the date (2)
data:[...] Base64	Design sans titre (1)
data:[...] Base64	Saulo’s post 2
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	Swiss
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided
data:[...] Base64	No alt attribute provided

Page structure 58% achieved

H1 heading

(Critically important)

There is no H1 heading specified.

H1-H6 headings

Headings

(Important)

The structure of headings is missing one or more levels. Do not skip heading levels.

There are 40 headings on the page. The amount of headings should be in a more proper relation to the amount of text.

Some headings do not have any content.

H1-H6 headings

Heading structure

Heading level	Content
H2	ASTEROID DAY 2025 IN LUXEMBOURG
H2	Empty heading
H2	ASTEROID DAY 2025 SPEAKERS
H2	NEWS AND RESOURCES
H2	FIND AN ASTEROID DAY EVENT
H2	100X DECLARATION SIGNATORIES
H3	ASTEROID DAY
H3	Claude Nicollier
H3	Alan Fitzsimmons
H3	Dorin Prunariu
H3	Christer Fuglesang
H3	Patrick Michel
H3	Gianluca Masi
H3	Mike von der Nahmer
H3	Wanda Diaz Merced
H3	Chloé Carrière
H3	David Kim
H3	Eric Tschirhart
H3	Jessica Whytehorn
H3	Daniel Müller
H3	Julia Bringewald
H3	Missions to Asteroids Exhibition Posters – Commemorative Versions
H3	(More) Unmissable Reads on Asteroids, Minor Bodies and Planetary Defence
H3	Are There Trojan Asteroids Outside Jupiter’s Orbit?
H3	Brian May
H3	Mayim Bialik
H3	Jack Black
H3	Nicole Stott
H3	Ashton Kutcher
H3	Bill Nye
H3	Sarah Brightman
H3	Brian Cox
H3	Anousheh Ansari
H3	Leland Melvin
H3	Subscribe to our newsletters!
H4	Main Sponsor
H4	Sponsors & Partners
H5	MAIN SPONSOR
H5	SPONSORS
H5	SUPPORT ASTEROID DAY
H6	h6

Link structure 37% achieved

Internal links

(Important)

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.

10 links don't have an anchor text.

The number of internal links is ok.

None of the anchor texts is too long.

Internal Linking

External links

(Nice to have)

There are 14 external links on this page.

External Links

Found links on this page

Link	Attributes	Anchor text
https://asteroidday.org/		IMG-ALT Asteroid Day
https://asteroidday.org/	Anchor	No Text
http://www.twitter.com/asteroi...	New window External Subdomain	No Text
http://www.facebook.com/astero...	New window External Subdomain	No Text
http://www.instagram.com/aster...	New window External Subdomain	No Text
https://www.linkedin.com/compa...	New window External Subdomain	No Text
http://www.youtube.com/asteroi...	New window External Subdomain	No Text
https://www.twitch.tv/asteroidday	New window External Subdomain	No Text
https://asteroidday.org/watch/		Watch
/events-in-luxembourg/		Events in Luxembourg
/asteroid-day-live/	Anchor	Asteroid Day LIVE
/event-organizer-information/		Host an Event
/events/event-registration/add		Register an event
/events/?eventDisplay=past&hid...		Find an event
/event-organizer-information/r...		Report after an event
/resources/		Discover
/resources/	Anchor	News & Updates
https://asteroidday.org/learn/		Learn about asteroids
/resources/asteroid-day-mercha...		Merchandise
/resources/asteroid-day-press-...		Press Room
https://asteroidday.org/support/		Support Asteroid Organizations
https://asteroidday.org/about/		About Asteroid Day
/about/asteroid-day-100x-decla...		100x Declaration
/about/asteroid-day-100x-decla...	Anchor	100x Signatories
/about/partners/		Partners
https://asteroidday.org/jobs/		Jobs
https://asteroidday.org/donate/		Donate
https://asteroidday.org/	Text duplicate	IMG-ALT Asteroid Day
https://asteroidday.org/	Anchor	No Text
/events-in-luxembourg/	New window	ASTEROID DAY
/events-in-luxembourg/		Learn more
/people/claude-nicollier/	New window	A-TITLE Claude Nicollier
/people/claude-nicollier/	New window Text duplicate	Claude Nicollier A-TITLE Claude Nicollier
/people/alan-fitzsimmons/	New window	A-TITLE Alan Fitzsimmons
/people/alan-fitzsimmons/	New window Text duplicate	Alan Fitzsimmons A-TITLE Alan Fitzsimmons
/people/dr-dorin-prunariu/	New window	A-TITLE Dorin Prunariu
/people/dr-dorin-prunariu/	New window Text duplicate	Dorin Prunariu A-TITLE Dorin Prunariu
/people/christer-fuglesang/	New window	A-TITLE Christer Fuglesang
/people/christer-fuglesang/	New window Text duplicate	Christer Fuglesang A-TITLE Christer Fuglesang
/people/patrick-michel/	New window	A-TITLE Patrick Michel
/people/patrick-michel/	New window Text duplicate	Patrick Michel A-TITLE Patrick Michel
/people/dr-gianluca-masi/	New window	A-TITLE Gianluca Masi
/people/dr-gianluca-masi/	New window Text duplicate	Gianluca Masi A-TITLE Gianluca Masi
/people/mike-von-der-nahmer/	New window	A-TITLE Mike von der Nahmer
/people/mike-von-der-nahmer/	New window Text duplicate	Mike von der Nahmer A-TITLE Mike von der Nahmer
/people/wanda-diaz-merced/	New window	A-TITLE Wanda Diaz Merced
/people/wanda-diaz-merced/	New window Text duplicate	Wanda Diaz Merced A-TITLE Wanda Diaz Merced
/people/chloe-carriere/	New window	A-TITLE Chloé Carrière
/people/chloe-carriere/	New window Text duplicate	Chloé Carrière A-TITLE Chloé Carrière
/people/david-kim/	New window	A-TITLE David Kim
/people/david-kim/	New window Text duplicate	David Kim A-TITLE David Kim
/people/eric-tschirhart/	New window	A-TITLE Eric Tschirhart
/people/eric-tschirhart/	New window Text duplicate	Eric Tschirhart A-TITLE Eric Tschirhart
/people/jessica-whytehorn/	New window	A-TITLE Jessica Whytehorn
/people/jessica-whytehorn/	New window Text duplicate	Jessica Whytehorn A-TITLE Jessica Whytehorn
/people/daniel-muller/	New window	A-TITLE Daniel Müller
/people/daniel-muller/	New window Text duplicate	Daniel Müller A-TITLE Daniel Müller
/people/julia-bringewald/	New window	A-TITLE Julia Bringewald
/people/julia-bringewald/	New window Text duplicate	Julia Bringewald A-TITLE Julia Bringewald
/events-in-luxembourg/	New window Text duplicate	Learn more A-TITLE EVENTS IN LUXEMBOURG
/resources/		NEWS AND RESOURCES
/resources/asteroid-learning/m...		IMG-ALT Save the date (2) A-TITLE Missions to Asteroids Exhibition Posters – Commemorative Versions
/resources/asteroid-learning/m...		Missions to Asteroids Exhibition Posters – Commemorative Versions A-TITLE Missions to Asteroids Exhibition Posters – Commemorative Versions
/resources/event-resources/mor...		IMG-ALT Design sans titre (1) A-TITLE (More) Unmissable Reads on Asteroids, Minor Bodies and Planetary Defence
/resources/event-resources/mor...		(More) Unmissable Reads on Asteroids, Minor Bodies and Planetary Defence A-TITLE (More) Unmissable Reads on Asteroids, Minor Bodies and Planetary Defence
/resources/event-resources/are...		IMG-ALT Saulo’s post 2 A-TITLE Are There Trojan Asteroids Outside Jupiter’s Orbit?
/resources/event-resources/are...		Are There Trojan Asteroids Outside Jupiter’s Orbit? A-TITLE Are There Trojan Asteroids Outside Jupiter’s Orbit?
/resources/		SEE MORE
/events/?eventDisplay=past&hid...	Text duplicate	Find an event
/event-organizer-information/		Get started here!
/about/our-team/		No Text
/about/our-team/		Brian May
/about/our-team/		No Text
/about/our-team/		Mayim Bialik
/about/our-team/		No Text
/about/our-team/		Jack Black
/about/our-team/		No Text
/about/our-team/		Nicole Stott
/about/our-team/		No Text
/about/our-team/		Ashton Kutcher
/about/our-team/		No Text
/about/our-team/		Bill Nye
/about/our-team/		No Text
/about/our-team/		Sarah Brightman
/about/our-team/		No Text
/about/our-team/		Brian Cox
/about/our-team/		No Text
/about/our-team/		Anousheh Ansari
/about/our-team/		No Text
/about/our-team/		Leland Melvin
/about/asteroid-day-100x-decla...		Read the Declaration
/about/our-team/		See All Of Our 100X Declaration Signatories
/support-asteroid-day		SUPPORT ASTEROID DAY
/about/partners/		See all Sponsors and Partners
/privacy-cookie-policy/		Privacy Policy
https://asteroidday.org/contact/		Contact
https://www.google.com/maps/pl...	New window External Subdomain	18, Rue Robert Stümper
https://www.google.com/maps/pl...	New window External Subdomain	L-2557 Luxembourg
https://asteroidday.org/donate	Text duplicate	Donate
https://asteroidday.org/watch/	Text duplicate	Watch
/events-in-luxembourg/	Text duplicate	Events in Luxembourg
/asteroid-day-live/	Anchor Text duplicate	Asteroid Day LIVE
/event-organizer-information/	Text duplicate	Host an Event
/events/event-registration/add	Text duplicate	Register an event
/events/?eventDisplay=past&hid...	Text duplicate	Find an event
/event-organizer-information/r...	Text duplicate	Report after an event
/resources/	Text duplicate	Discover
/resources/	Anchor Text duplicate	News & Updates
https://asteroidday.org/learn/	Text duplicate	Learn about asteroids
/resources/asteroid-day-mercha...	Text duplicate	Merchandise
/resources/asteroid-day-press-...	Text duplicate	Press Room
https://asteroidday.org/support/	Text duplicate	Support Asteroid Organizations
https://asteroidday.org/about/	Text duplicate	About Asteroid Day
/about/asteroid-day-100x-decla...	Text duplicate	100x Declaration
/about/asteroid-day-100x-decla...	Anchor Text duplicate	100x Signatories
/about/partners/	Text duplicate	Partners
https://asteroidday.org/jobs/	Text duplicate	Jobs
https://asteroidday.org/donate/	Text duplicate	Donate
http://www.twitter.com/asteroi...	New window External Subdomain	No Text
http://www.facebook.com/astero...	New window External Subdomain	No Text
http://www.instagram.com/aster...	New window External Subdomain	No Text
https://www.linkedin.com/compa...	New window External Subdomain	No Text
http://www.youtube.com/asteroi...	New window External Subdomain	No Text
https://www.twitch.tv/asteroidday	New window External Subdomain	No Text

Server configuration 91% achieved

HTTP redirects

(Critically important)

This page redirects to "https://asteroidday.org/"

WWW Redirect

HTTP header

(Important)

The web server version is sent within the HTTP header.

No X-Powered HTTP header is sent.

The web server transmits the web page (HTML) in compressed form.

HTTP headers

Performance

(Somewhat important)

The page response time is excellent with 0.03 seconds.

The file size of the HTML document is fine (421 kB).

Page Speed

HTTP Response Header

Name	Value
x-xss-protection	1
x-fw-dynamic	TRUE
x-fw-hash	ium9t2j5ty
content-encoding	gzip
referrer-policy	no-referrer-when-downgrade
x-tec-api-root	https://asteroidday.org/wp-json/tribe/events/v1/
x-tec-api-version	v1
x-content-type-options	nosniff
link	<https://asteroidday.org/wp-json/>; rel="https://api.w.org/"
x-fw-server	Flywheel/5.1.0
x-tec-api-origin	https://asteroidday.org
x-fw-version	5.0.0
content-type	text/html; charset=UTF-8
server	Flywheel/5.1.0
x-cacheable	YES
fastly-restarts	1
accept-ranges	bytes
date	Fri, 16 May 2025 02:18:10 GMT
x-served-by	cache-fra-eddf8230147-FRA, cache-fra-etou8220099-FRA
x-cache	MISS, HIT
x-cache-hits	0, 1
x-timer	S1747361890.475468,VS0,VE2
vary	Accept-Encoding
x-fw-serve	TRUE
x-fw-static	NO
x-fw-type	FLYWHEEL_BOT
content-length	73285
statuscode	200
http_version	HTTP/2

External factors 100% achieved

Backlinks

(Critically important)

This page is referenced by wikipedia.

This website has excellent links from other websites.

This page has backlinks from 688 referring domains.

This page has 5,188 backlinks.

This page has backlinks from 592 different ip addresses.

Backlinks

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

# Default robots file version:2
User-agent: *
Disallow: /calendar/action*
Disallow: /events/action*
Allow: /*.css
Allow: /*.js
Disallow: /*?
Crawl-delay: 3

Similar sites

Search preview

asteroidday.org

Asteroid Day - UN-sanctioned global awareness campaign

Asteroid Day is a global awareness campaign where people from around the world come together to learn about asteroids, and how we can protect our planet.

Most important keywords

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

Keyword	Result	Recheck
Asteroid	86%	Check
Day	86%	Check
Asteroid Day	86%	Check
ASTEROID DAY 2025	73%	Check
Asteroid Day LIVE	71%	Check
ASTEROID DAY EVENT	71%	Check
Support Asteroid	64%	Check
Asteroid Foundation	63%	Check
Global	58%	Check
asteroids	54%	Check
art	49%	Check
world	48%	Check
Asteroids Exhibition	48%	Check
Trojan Asteroids	48%	Check
SPONSOR	47%	Check
SPONSORS	47%	Check
Sponsors Partners	47%	Check
Learn	46%	Check
SPEAKERS	45%	Check
MAIN SPONSOR	45%	Check
2025 LUXEMBOURG	45%	Check
Brian	44%	Check
Partners	43%	Check
News	43%	Check
MAIN	43%	Check

Show more keywords and terms

Automatically check asteroidday.org including all subpages at once!

Check 300+ SEO parameters on every page of your website
Easy troubleshooting with optimization suggestions
Automated check for keyword optimization

Try for free
Guaranteed free of charge during trial period.

Asteroidday.org - SEO Checker

Task list of SEO Improvements 4 Tasks

Meta specifications 100% achieved

(Critically important)

(Critically important)

(Critically important)

(Important)

(Somewhat important)

(Somewhat important)

(Somewhat important)

(Somewhat important)

(Somewhat important)

(Somewhat important)

(Nice to have)

(Nice to have)

Meta tags

Automatically check asteroidday.org including all subpages at once!

Page quality 78% achieved

(Critically important)

(Critically important)

(Somewhat important)

(Somewhat important)

(Somewhat important)

(Nice to have)

(Nice to have)

(Somewhat important)

Media list

Page structure 58% achieved

(Critically important)

(Important)

Heading structure

Link structure 37% achieved

(Important)

(Nice to have)

Found links on this page

Server configuration 91% achieved

(Critically important)

(Important)

(Somewhat important)

HTTP Response Header

External factors 100% achieved

(Critically important)

Links from Wikipedia

Robots.txt

Similar sites

Search preview

Most important keywords

Automatically check asteroidday.org including all subpages at once!

Cookie Policy