On you or visitors. Ideas?

Choot it

LOL! That's not an option.

Shock collar w/remote. Everytime he/she jumps....knock the fire out of him/her.

Best way is to purposely have dog on a leash or line and plan for visitors to come over.
Then as soon as the dog jumps, snap a correction and firmly and loudly say "off, no!", then as dog's feet hit the ground immediately praise with "good boy/girl" equal or more than the correction.

You'll start to see dog want to jump but hesitate...that's a good sign. Be consistent every visit by anyone. Done correctly you can train pretty well in 4 weeks.

Put a knee out so it hits his/her chest every time they jump and yell No! Most dogs want to please the master and get it eventually.

Be ready to meet him (or her) with your knee when he jumps up.

Every time he jumps up on you raise your knee and put it into his chest or rib cage.

Don't try to kill him with you knee but let him feel it a little.

Tell him firmly "no".

I had one that I broke from doing that with that method.

What age and breed is the dog?

For jumping on you, toothdoc and cuzpat are spot on.

Turn your back to them when they jump

Besides the knee, you can also step lightly on their back feet/toes. Dogs hate that.

Is it a pitbull or a chiwowa ?

Ok. Every time it does it hit em in the nose with cayenne pepper

Knee to the chest has worked with all my dog. Labs. Golden’s And golden doodle

Slap em in the nose and tell them no. Every dog should know what no ia from an early age

Mutt...looks to be a bulldog mix. 6 months old. Learns fast. Knows sit, speak, shake and pretty well at stay. Broke the hand biting thing pretty fast. My fiancé's and her daughter's dog. Already 35lbs or so. I told her they need to be in control of her because she will be a big dog.

Agree with either the knee to stop them or have your visitors turn your back to him/her. Our dog loves to jump and when our visitors listen and turn their back until she calms down she learned real quick that jumping makes people ignore you and sitting or just standing there allows them to pet her. Took about a month with our dog and now she knows better.

You're right, the sooner they learn the easier it will be on everyone.

Join your fingers and thumb together in a chicken beak formation on your strong hand. All the pads of your fingers and thumb touching each other. Keep that hand low as you approach the dog. You may need to kneel down to properly reach. As they jump up, tap them sternly in the solar plexus from underneath. This is the spot where the rib cage comes together - right at the bottom of the rib cage - not on the ribs but in the soft spot right between the ribs where they come together. This spot is only about the size of a quarter on a dog.

Chicken beak (called beak strike in this blog post):

http://ryukyuma.blogspot.com/2013/04/small-surface-strikes-structurally.html

Solar plexus (called xiphoid process in this picture):

http://healthclubmag.com/wp-content/uploads/2018/07/Xiphoid-Process-of-Sternum-1.jpg

It is best to set them up in a situation where you know the dog will jump up (such as just when you come home, when they get excited over a favorite toy/treat, etc.) and do it the first time with no warning. It is a group of nerves called the celiac bundle and they are very sensitive so when you tap them sternly, it causes serious discomfort. Repeat it every single time they jump up and they should only do it half a dozen or so more times.

If done correctly, the dog does not see it coming or know that you did it. It associates the act of jumping up with the discomfort rather than you being unhappy with the action that caused it. Much shorter training period and it's the dog's idea, not yours to change the behaviour. Don't act mad or put out and it makes it work better. If she gets seriously put out by the discomfort you should act surprised and ask if she is okay and console her. That further reinforces the idea in her head that it did not come from you.

This is what we did when our doberman was a puppy. I didn't knee him hard or anything, but every time he'd jump up, I'd hold my knee up and basically let him run into it. only took a few times and he quit.

With other folks' dogs, I'd do the "turn your back to them" thing. Whether they were jumping up or just being pushy in general, or even a dog that seemed to be potentially a little too aggressive, I'd just cross my arms and turn around and they'd almost always calm down immediately.

WTH is a chiwowa??