What W3Schools's terms say
W3Schools's terms of service and privacy policy have 42 rated points: 0 serious, 13 bad, 25 worth knowing and 4 good. 35 apply whenever you use the site, signed in or not; 7 only once you have an account.
Whenever you use W3Schools
Bad 11
Referring and/or exit pages are tracked
This service tracks which web page referred you to it
Where it says this ↗Your personal data may be used for marketing purposes
This service may use your personal information for marketing purposes
Where it says this ↗This service shares your personal data with third parties that are not essential to its operation
This service can share your personal information to third parties
Where it says this ↗Third-party cookies are used for statistics
This service uses third-party cookies for statistics
Where it says this ↗Terms may be changed any time at their discretion, without notice to you
Terms may be changed any time at their discretion, without notice to the user
Where it says this ↗Third-party cookies are employed, but with opt out instructions
This service employs third-party cookies, but with opt-out instructions
Where it says this ↗No guarantee is made regarding the correction of software errors
The service does not guarantee that software errors will be corrected
Full quote: "We do not warrant that the quality of any products, services, information, or other material purchased or obtained by you will meet your expectations, or that any errors in the Service will be corrected."
Where it says this ↗Logs are kept for an undefined period of time
Where it says this ↗You are tracked via web beacons, tracking pixels, browser fingerprinting, and/or device fingerprinting
The service may use tracking pixels, web beacons, browser fingerprinting, and/or device fingerprinting on users.
Full quote: "We collect Device Information using the following technologies: "Cookies" are data files that are placed on your device or computer and often include an anonymous unique identifier. For more information about cookies, and how to disable cookies, visit http://www.allaboutcookies.org. "Log files", and User Accounts, track actions occurring on the Site, and collect data including your IP address, browser type, Internet service provider, referring/exit pages, and date/time stamps. "Web beacons", "tags", and "pixels" are electronic files used to record information about how you browse the Site."
Where it says this ↗Your personal data is used to employ targeted third-party advertising
The service uses your personal data to employ targeted third-party advertising
Where it says this ↗
Worth knowing 20
Your personal data may be aggregated into statistics
Your personal data is aggregated into statistics
Where it says this ↗First-party cookies are used
This service requires first-party cookies
Full quote: "We collect Device Information using the following technologies: "Cookies" are data files that are placed on your device or computer and often include an anonymous unique identifier. For more information about cookies, and how to disable cookies, visit http://www.allaboutcookies.org. "Log files", and User Accounts, track actions occurring on the Site, and collect data including your IP address, browser type, Internet service provider, referring/exit pages, and date/time stamps. "Web beacons", "tags", and "pixels" are electronic files used to record information about how you browse the Site."
Where it says this ↗Your IP address is collected, which can be used to view your approximate location
This service collects your IP address for location use
Where it says this ↗This service informs you that its Privacy Policy does not apply to third-party services
The service informs users that its privacy policy does not apply to third party websites
Where it says this ↗Do Not Track (DNT) headers are ignored and you are tracked anyway even if you set this header
This service ignores the Do Not Track (DNT) header and tracks users anyway even if they set this header.
Where it says this ↗Failure to enforce any provision of the Terms of Service does not constitute a waiver of such provision
Where it says this ↗Spidering, crawling, or accessing the site through any automated means is not allowed
Spidering or crawling is not allowed
The excerpt is contained within the "Prohibited Uses" Section of the Terms, category (i).
Where it says this ↗No warranty is made regarding an uninterrupted, timely, secure and/or error-free experience
The service provider makes no warranty regarding uninterrupted, timely, secure or error-free service
Where it says this ↗This service is a subsidiary of Company X
This service is a subsidiary of Refsnes Data
Where it says this ↗You agree not to use the service for illegal purposes
Users agree not to use the service for illegal purposes
Where it says this ↗No guarantee is given regarding quality
This services gives no guarantee regarding quality
Where it says this ↗This service does not guarantee that it or the products obtained through it meet your expectations or requirements
This service does not guarantee that it or the products obtained through it meet the users' expectations or requirements
Full quote: "We do not warrant that the quality of any products, services, information, or other material purchased or obtained by you will meet your expectations, or that any errors in the Service will be corrected."
Where it says this ↗You are allowed to quote their content with attribution
Where it says this ↗No guarantee is made reguarding the accuracy and/or reliability of the information provided
The service does not guarantee accuracy or reliability of the information provided
Where it says this ↗This service does not condone any ideas contained in its user-generated contents
Where it says this ↗The service is provided 'as is' and to be used at your sole risk
The service is provided 'as is' and to be used at the users' sole risk
Where it says this ↗The court of law governing the terms is in location X
The court of law governing the Terms is in Norway
Where it says this ↗The service assumes no liability for any damages the user incurs
This service assumes no liability for any losses or damages resulting from any matter relating to the service
Where it says this ↗You agree to defend, indemnify, and hold the service harmless in case of a claim related to your use of the service
Where it says this ↗Third parties are involved in operating the service
Third parties may be involved in operating the service
Where it says this ↗
Good 4
A complaint mechanism is provided for the handling of personal data
The service provides a complaint mechanism for the handling of personal data
Where it says this ↗Information is provided about how your personal data is used
The service provides information about how they intend to use your personal data
Where it says this ↗Information is provided about what kind of personal information is collected
The service provides details about what kinds of personal information they collect
Where it says this ↗You can opt out of targeted advertising
Where it says this ↗
If you have a W3Schools account
Bad 2
Your account can be deleted or permanently suspended without prior notice and without a reason
The service can delete your account without prior notice and without a reason
Where it says this ↗You must provide your legal name, pseudonyms are not allowed
Where it says this ↗
Worth knowing 5
You are prohibited from sending chain letters, junk mail, spam or any unsolicited messages
This service prohibits users sending chain letters, junk mail, spam or any unsolicited messages
The excerpt is contained within the "Prohibited Uses" Section of the Terms.
Where it says this ↗You agree not to submit libelous, harassing or threatening content
Users agree not to submit libelous, harassing or threatening content
Where it says this ↗If you are the target of a copyright claim, your content and/or your account may be removed
If you are the target of a copyright claim, your content may be removed
This excerpt is contained within the "Prohibited Uses" Section of the Terms.
Where it says this ↗The posting of pornographic content is prohibited
Prohibits the posting of pornographic content
Full quote: "You further agree that your comments will not contain libelous or otherwise unlawful, abusive or obscene material, or contain any computer virus or other malware that could in any way affect the operation of the Service or any related website."
Where it says this ↗This service is only available to users over a certain age
Where it says this ↗
The documents
Ratings by ToS;DR volunteers; they can lag behind the current terms. Not legal advice.