Website review openintro.org
OpenIntro: developer and promoter of educational products that are free, transparent, and lower barriers to education.
Generated on March 17 2026 22:58 PM
Old data? UPDATE !
The score is 54/100
SEO Content
Title
OpenIntro: developer and promoter of educational products that are free, transparent, and lower barriers to education.
Length : 118
Ideally, your title should contain between 10 and 70 characters (spaces included). Use this free tool to calculate text length.
Description
OpenIntro's mission is to make educational products that are free, transparent, and lower barriers to education. We're a registered 501(c)(3) nonprofit.
Length : 152
Great, your meta description contains between 70 and 160 characters.
Keywords
Very bad. We haven't found meta keywords on your page. Use this free online meta tags generator to create keywords.
Og Meta Properties
This page does not take advantage of Og Properties. This tags allows social crawler's better structurize your page. Use this free og properties generator to create them.
Headings
| H1 | H2 | H3 | H4 | H5 | H6 |
| 1 | 1 | 0 | 1 | 0 | 5 |
- [H1] Publishing Done Right
- [H2] Teacher Access
- [H4] Ensuring every student has access
- [H6] Statistics
- [H6] Mathematics
- [H6] Account
- [H6] About
- [H6] Company
Images
We found 7 images on this web page.
Good, most or all of your images have alt attributes.
Text/HTML Ratio
Ratio : 21%
Good, this page's ratio of text to HTML code is higher than 15, but lower than 25 percent.
Flash
Perfect, no Flash content has been detected on this page.
Iframe
Great, there are no Iframes detected on this page.
SEO Links
URL Rewrite
Bad. Your links have query string.
Underscores in the URLs
Perfect! No underscores detected in your URLs.
In-page links
We found a total of 27 links including 0 link(s) to files
| Anchor | Type | Juice |
|---|---|---|
| Home | Internal | Passing Juice |
| Books | Internal | Passing Juice |
| OpenIntro Statistics | Internal | Passing Juice |
| Introduction to Modern Statistics | Internal | Passing Juice |
| Intro Stat for Life & Biomedical Sci. | Internal | Passing Juice |
| Advanced High School Statistics | Internal | Passing Juice |
| Intro Stat w/Randomization & Sim. | Internal | Passing Juice |
| College Algebra and Trigonometry | Internal | Passing Juice |
| APEX Calculus | Internal | Passing Juice |
| Linear Algebra | Internal | Passing Juice |
| Forums | Internal | Passing Juice |
| Teacher Options | Internal | Passing Juice |
| Blog | Internal | Passing Juice |
| Statistics | Internal | Passing Juice |
| Mathematics | Internal | Passing Juice |
| Teachers | Internal | Passing Juice |
| Ref 1 | Internal | Passing Juice |
| Ref 2 | Internal | Passing Juice |
| Profile | Internal | Passing Juice |
| Settings | Internal | Passing Juice |
| Billing | Internal | Passing Juice |
| Notifications | Internal | Passing Juice |
| Our Team | Internal | Passing Juice |
| Common Questions | Internal | Passing Juice |
| Contact | Internal | Passing Juice |
| Terms of Use | Internal | Passing Juice |
| License | Internal | Passing Juice |
SEO Keywords
Keywords Cloud
access free products also lower transparent education teachers openintro barriers
Keywords Consistency
| Keyword | Content | Title | Keywords | Description | Headings |
|---|---|---|---|---|---|
| openintro | 5 |  |
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| access | 4 | |
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| teachers | 4 | |
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| free | 4 | |
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| also | 3 | |
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Usability
Url
Domain : openintro.org
Length : 13
Favicon
Great, your website has a favicon.
Printability
We could not find a Print-Friendly CSS.
Language
Good. Your declared language is en.
Dublin Core
This page does not take advantage of Dublin Core.
Document
Doctype
HTML 5
Encoding
Perfect. Your declared charset is UTF-8.
W3C Validity
Errors : 0
Warnings : 0
Email Privacy
Great no email address has been found in plain text!
Deprecated HTML
Great! We haven't found deprecated HTML tags in your HTML.
Speed Tips
|
Excellent, your website doesn't use nested tables. |
|
Too bad, your website is using inline styles. |
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Too bad, your website has too many CSS files (more than 4). |
|
Perfect, your website has few JavaScript files. |
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Perfect, your website takes advantage of gzip. |
Mobile
Mobile Optimization
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Apple Icon |
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Meta Viewport Tag |
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Flash content |
Optimization
XML Sitemap
Missing
Your website does not have an XML sitemap - this can be problematic.
A sitemap lists URLs that are available for crawling and can include additional information like your site's latest updates, frequency of changes and importance of the URLs. This allows search engines to crawl the site more intelligently.
Robots.txt
https://openintro.org/robots.txt
Great, your website has a robots.txt file.
Analytics
Great, your website has an analytics tool.
Google Analytics |
PageSpeed Insights
Device
Categories
Free SEO Testing Tool
Free SEO Testing Tool is a free SEO tool which provides you content analysis of the website.