Computerhistory.org - SEO Checker

Overview of the SEO Check
Meta information
64% 
Page quality
83% 
Page structure
58% 
Link structure
73% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.03 s
File size
91.10 kB
Words
648
Media files
14
Number of links
83 internal / 12 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Home - CHM
The page title is too short. (117 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)
https://computerhistory.org/
There is a valid canonical link 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=1.0
robotsindex, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1
google-site-verificationYn3JMKeiLvajp8ng2GZpR6eYm_wjIQflmPShjD5O8cY
article:publisherhttps://www.facebook.com/computerhistory/
article:modified_time2025-02-19T17:00:03+00:00
langen
twitter:cardsummary_large_image
twitter:site@ComputerHistory
og:localeen_US
og:typewebsite
og:titleHome
og:urlhttps://computerhistory.org/
og:site_nameCHM
X-UA-CompatibleIE=edge
charsetutf-8

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Page quality

Content
(Critically important)
Words from the H1 heading are not used in the page content.
This page contains 648 words. That's ok.
29.3% of the text are stop words.
The page contains a listing, which indicates a good text layout.
13 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 17.2 words is good.
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=1.0" is provided.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 13 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)
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.

Page structure

H1 heading
(Critically important)
Now open! Chatbots Decoded: Exploring AI
The H1 heading is perfect.
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 44 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.

Heading structure

Heading levelContent
H1 Now open! Chatbots Decoded: Exploring AI
H2 Chatbots Decoded: Exploring AI
H2 Exhibits
H2 Upcoming Events
H2 Discover More at CHM
H2 In the News
H2 From Our Blogs
H2 Activities & Resources
H2 CHM on YouTube
H2 HELP US TELL THE FULL STORY
H2 Hours and Directions
H4 Chatbots Decoded: Exploring AI Duplicate text
H4 Revolution: The First 2000 Years of Computing
H4 Make Software: Change the World!
H4 Character Building
H4 AI Decodes Ancient History
H4 TechFest
H4 Tours
H4 Exhibits Duplicate text
H4 Collections
H4 Source Code
H4 Timelines
H4 Fellow Awards
H4 Podcast
H4 New News Tech
H4 Meet Marc Etkind
H4 Parrots vs. Sparks
H4 Roblox
H4 Minecraft: Education Edition
H4 Revolution Virtual Scavenger Hunt
H4 CHM Live
H4 Make Software: Change the World! Duplicate text
H4 CHM YouTube Shorts
H5 Empty heading
H5 Empty heading
H5 Empty heading
H5 Empty heading
H5 Empty heading
H5 Empty heading
H5 Visit
H5 Visit Duplicate text
H5 EXPLORE
H5 playlist
H5 Explore
H5 Awards
H5 Empty heading
H5 CHM BLOG
H5 CHM BLOG Duplicate text
H5 CHM BLOG Duplicate text
H5 Game for Grades 3–8
H5 Empty heading
H5 Activity for Grades 6–12
H5 Empty heading
H5 Empty heading
H5 Empty heading
Some internal link anchor texts are too long.
Some anchor texts are used more than once.
The number of internal links is ok.
All internal links are not using dynamic parameters.
There are 12 external links on this page.
LinkAttributesAnchor text
https://computerhistory.org/IMG-ALT Computer History Museum Logo
A-TITLE Computer History Museum home link
https://donate.computerhistory...External Subdomain Donate
https://connect.computerhistor...External Subdomain Tickets
/explore/Explore
/explore/Overview
/collections/Collections
/timelines/Timelines
/blogs/Blogs
/stories/Stories
/playlists/Playlists
/explore/podcast/Podcast
/activities-resources/Activities & Resources
/visit/Visit
/visit/Text duplicate Overview
/plan-your-visit/Plan Your Visit
/exhibits/Exhibits
/tours/Tours
/visit/group-visits/Group Visits
/events/Events
/venue/Venue
/about/About
/about/Text duplicate Overview
/this-is-chm/This Is CHM
/fellow-awards/Awards
/programs/Programs
/press-releasesNews
/leadership/Leadership
https://computerhistory.org/join/Join & Give
https://computerhistory.org/join/Text duplicate Overview
/membership/Membership
/ways-to-give/Ways to Give
/donor-recognition/Donor Recognition
/institutional-supporters/Institutional Supporters
/volunteers/Volunteers
https://donate.computerhistory...External Subdomain Text duplicate Donate
https://connect.computerhistor...External Subdomain Text duplicate Tickets
/hours-admission/Hours & Admission
/subscribe/Subscribe
/collections/search/Subdomain Or search the collection catalog
/exhibits/chatbots-decoded/New window Learn more
/hours-admission/Holidays and Closures
/exhibits/View All
/exhibits/chatbots-decoded/Chatbots Decoded: Exploring AI Discover what chatbots are, where they come from, and why they matter. Have a conversation with a chatbot-powered robot and he...
/exhibits/revolution/Revolution: The First 2000 Years of Computing Revolution features 19 galleries, 1,100 objects, and inspiring stories from the pioneers and innovators who sta...
/exhibits/make-softwareMake Software: Change the World! Make Software explores the history, impact, and technology behind seven game-changing applications: MP3, Photoshop, MRI, Car...
/exhibits/Text duplicate View All
/eventsText duplicate View All
/events/character-building/Character Building Tue, May, 13, 7:00PM
/events/ai-decodes-ancient-his...AI Decodes Ancient History Tue, Jun, 10, 7:00PM
/events/techfest-6/TechFest Sat, Jun, 21, 10:00AM
/eventsText duplicate View All
/tours/Text duplicate IMG-ALT Tours
/tours/Visit Tours
/exhibits/Text duplicate IMG-ALT Exhibits
/exhibits/Visit Exhibits
/collections/Text duplicate IMG-ALT Collections
/collections/EXPLORE Collections
/playlists/source-code/IMG-ALT Source Code
/playlists/source-code/playlist Source Code
/timelines/Text duplicate IMG-ALT Timelines
/timelines/Explore Timelines
/fellow-awards/IMG-ALT Fellow Awards
/fellow-awards/Awards Fellow Awards
/explore/podcast/Text duplicate IMG-ALT Podcast
/explore/podcast/Text duplicate Podcast
/press-releases/computer-histo...CHM Appoints New President and CEO
/press-releases/computer-histo...CHM Unveils “Chatbots Decoded: Exploring AI” Exhibit
/blogs-allView all
/blog/new-news-tech/CHM BLOG New News Tech CHM convened experts to explain the state of journalism and the opportunities and challenges presented by new technologies and tools.
/blog/meet-marc-etkind/CHM BLOG Meet Marc Etkind CHM's new president and CEO, Marc Etkind, shares moments from his life that inspired him and prepared him to lead CHM forward.
/blog/parrots-vs-sparks/CHM BLOG Parrots vs. Sparks Experts debate the question of whether or not the large language models that drive artificial intelligence chatbots really unders...
/blogs-allText duplicate View all
/activities-resources/Text duplicate View All
/techquest/Game for Grades 3–8 Roblox In CHM's TechQuest on Roblox, explore how tech is used in the real world today in two unique worlds—conservation and automation. U...
https://education.minecraft.ne...External Subdomain Minecraft: Education Edition The Great Tech Story, the Museum’s world in Minecraft: Education Edition, inspires and empowers students from ages 8–16 to becom...
/revolution-virtual-scavenger-...Activity for Grades 6–12 Revolution Virtual Scavenger Hunt Discover the treasures of Revolution: The First 2,000 Years of Computing. Our virtual scavenger hu...
/activities-resources/Text duplicate View All
https://www.youtube.com/user/C...External Subdomain Text duplicate View All
https://www.youtube.com/playli...External Subdomain CHM Live CHM Live convenes today’s thought leaders and experts for conversations and debate about the complexities and opportunities presented by technology....
https://www.youtube.com/playli...External Subdomain Make Software: Change the World! Explore these mini-documentaries from our exhibit, Make Software: Change the World! Learn about the history, impact, and tec...
https://www.youtube.com/@Compu...External Subdomain CHM YouTube Shorts Explore cultural moments in tech history, discover the strange and interesting stories behind unique artifacts, meet the pioneers who crea...
https://www.youtube.com/user/C...External Subdomain Text duplicate View All
https://donate.computerhistory...External Subdomain Text duplicate Donate
https://computerhistory.org/Text duplicate IMG-ALT Computer History Museum Logo
A-TITLE Computer History Museum home link
/terms/Terms of Use
/privacy/Privacy
/press-releases/Press
https://computerhistory.org/jobs/Careers
/venue/Text duplicate Venue
/events/Text duplicate Events
/exhibits/Text duplicate Exhibits
/donate-now/Text duplicate Donate
/make-plan/Hours & Directions
/contact-us/More Contact Info
https://connect.computerhistor...External Subdomain Buy Tickets Now

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://computerhistory.org/"
HTTP header
(Important)
No X-Powered HTTP header is sent.
The web server transmits the web page (HTML) in compressed form.
Performance
(Somewhat important)
The page response time is excellent with 0.03 seconds.
The file size of the HTML document is fine (91 kB).

HTTP Response Header

NameValue
cache-controlpublic, max-age=600
content-encodinggzip
content-typetext/html; charset=UTF-8
link<https://computerhistory.org/wp-json/>; rel="https://api.w.org/"
servernginx
strict-transport-securitymax-age=300
x-pantheon-styx-hostnamestyx-fe4-a-5f5496676d-dhzl9
x-styx-req-idb29f9c92-2e26-11f0-90f6-96861a096ff5
dateSun, 11 May 2025 05:15:51 GMT
x-served-bycache-chi-klot8100118-CHI, cache-fra-eddf8230154-FRA
x-cacheMISS, HIT
x-cache-hits0, 1
x-timerS1746940552.560640,VS0,VE3
varyAccept-Encoding, Cookie, Cookie
age131
accept-rangesbytes
via1.1 varnish, 1.1 varnish
content-length26695
statuscode200
http_versionHTTP/2

External factors

This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 1,525 referring domains.
This page has 28,021 backlinks.
This page has backlinks from 1,102 different ip addresses.

Robots.txt

# START YOAST BLOCK
# ---------------------------
User-agent: *
Disallow:

Sitemap: https://computerhistory.org/sitemap_index.xml
# ---------------------------
# END YOAST BLOCK

Search preview

computerhistory.org
Home - CHM

Most important keywords

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

KeywordResultRecheck
Story58%Check
CHM56%Check
history54%Check
Chatbots54%Check
Decoded54%Check
Exploring54%Check
open50%Check
CHM YouTube49%Check
CHM Live49%Check
History Museum48%Check

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