I’ve known a LOT of people over my lifetime that have regularly & copiously pressure canned on a kitchen woodstove.
Silentgypsy is working on a “rocket stove’, (for which there are many youtube videos available) and may be able to address whether one would work for canning. Personally, I don’t see why not, as long as one was attentive to keeping it fueled.
Youtube also has other alternative, emergency stove how-to videos...if you really want to get caught up in yet another line of research. ;-’)
A kitchen wood stove is fairly easy to control the heat for a pressure canner to stay at the right amount of pressure.
I have a rocket stove and they are really small, not nearly enough surface to hold a pressure canner. They are doing good to hold a medium sized pan. I bought a small iron pot with cover and small iron skillet to work on the rocket stove. A rocket stove works by being insulated inside so the heat is concentrated in a small area so they burn really hot and will burn a small amount of organic fuel (only organic) until it is a small amount of ash. The temperature cannot be controlled well, if at all.
I know about every emergency stove available as I researched that years ago and in recent years. I keep up with new innovation emergency stoves which is why I have a rocket stove. In my opinion, there is no emergency stove, except a regular kitchen wood stove, that will work for a pressure canner.
Youtube has many gardening channels and a person can learn much there about most anything they want. It has also helped me develop an interest in woodworking and improved my welding skills along with some other things. I’ve spent much time there this summer while recovering from two successive accidents, too much time probably.