Question: OCSP stapling decreases the load on a PKI infrastructure's OCSP server by attaching a signed OCSP response to the target in a TLS connection. In addition it creates a more secure/private session since the CA doesn't know that your browser is accessing a given site. Some people have compared this behavior to Kerberos.

**Question**

* What web browsers support OCSP stapling?
* Are there any implementation considerations among different browsers that need to be addressed to maintain uniform privacy and performance benefits?

Answer: 
My impression is that [OCSP stapling is not well supported on the client side](https://web.archive.org/web/20151017004901/https://blogs.msdn.com/b/ieinternals/archive/2011/04/07/10151106.aspx?Redirected=true), but it's possible my information might be out of date.

Firefox apparently supports OCSP stapling, as of Firefox 26. (Thanks to Jan Schejbal for this information.)

Chrome supports OCSP stapling [on Windows, Linux, and ChromeOS](https://web.archive.org/web/20151216040743/https://code.google.com/p/chromium/issues/detail?id=361230#c8). (Thanks to Kit Sunde for this information.) (The Chrome team has [decided](https://arstechnica.com/information-technology/2012/02/google-strips-chrome-of-ssl-revocation-checking/) that they plan to [remove CRL and regular OCSP checks](https://www.imperialviolet.org/2012/02/05/crlsets.html), but they haven't disabled OCSP stapling.)

I've read one report that [most browsers support OCSP stapling on Windows](https://news.netcraft.com/archives/2013/07/19/microsoft-achieves-world-domination-in-ocsp-stapling.html).

Here is some more information on [browser support for OCSP](https://web.archive.org/web/20220307083919/http://www.carbonwind.net/blog/post/Random-SSLTLS-101-OCSPCRL-in-practice.aspx) (but not OCSP stapling, unfortunately).
You can test OCSP stapling support in Your browser on <http://www.vpnhosting.cz/ocsp>.

It is in Czech language, if You can see OCSP\_stapling\_disabled, OCSP stapling is disabled, OCSP\_stapling\_enabled means, that OCSP stapling works.