Link publishing policy

We link to government and non-profit websites that include a 501(c)(3) nonprofit policy statement. We are currently removing links to websites that link to other commercial websites.

We link to sites that use a Hypertext Transfer Protocol Secure (HTTPS) URL scheme. This ensures and added layer of protection to anyone clicking on links on our website by preventing man-in-the-middle attacks. The only exceptions are for government websites that have not yet updated their URL scheme. You can secure an SSL certificate for free or for a fee. Please read this Google article to learn more about how to safeguard your site visitors

Examples of 501(c)(3) nonprofit policy statements

“Is Doctors Without Borders a 501(c)(3) nonprofit organization? Is my donation tax-deductible?

Yes. Doctors Without Borders USA, Inc. is recognized as tax-exempt under section 501(c)(3) of the Internal Revenue Code. 100 percent of your donation is tax-deductible.

Our Federal Tax ID number or Employer Identification Number (EIN) is 13-3433452. If you’d like to learn more, visit our Financial Information page.”

“Doctors Without Borders USA, Inc., is recognized as tax-exempt under section 501(c)(3) of the Internal Revenue Code. EIN: 13-3433452”

“The American Diabetes Association is a nonprofit charity designated as tax-exempt under section 501(c)3 by the Internal Revenue Service. Donations are tax-deductible to the full extent of the law. Our tax ID is #13-1623888. All transactions on our web site are safe and secure.”

“National Multiple Sclerosis Society and Affiliate (collectively, the “society”), a national not-for-profit health agency, envisions a world free of Multiple Sclerosis (“MS”).”

“The nonprofit Wikimedia Foundation provides the essential infrastructure for free knowledge.”

Canonical URL

Link to the canonical URL

If a URL https://server/page?id=29384g&othercrap=234987 links to a page as well as https://server/page?id=29384g then the shorter URL is the canonical URL.

PMT policy for CDN

We link to assets using CDN if possible. This reduces page load time and reduces files in our repositories.

✔ Use integrity and crossorigin every time

✖ Never use CDN without integrity or crossorigin

Preferred CDNs