That cant be answered because space is almost infinite and we have no knowledge on how many gas giants there are (but there must be over a million millions) let alone how big every single one is. So simply put there is no answer to your question.
Jupiter
Jupiter
Of the Jovian (gas giant) planets, Neptune is the smallest while Jupiter is the largest.
The largest Jovian (gas) planet in our solar system is Jupiter. However astronomers have observed a planet orbiting the star XO-3 about 660 light years from Earth, that is believed to be at least 11 times the mass of Jupiter.
The largest gas giant in our solar system with multiple moons is Jupiter. Saturn is second, with almost as many moons (around 60), followed by Uranus and Neptune.
Jupiter
Jupiter
Saturn is the second largest
Saturn
Of the Jovian (gas giant) planets, Neptune is the smallest while Jupiter is the largest.
You cant land on a gas giant But probes have gone "inside" gas giants
Jupiter is the largest planet in the Milky Way Galaxy. It is formed from gas and is also known as the Gas Giant
Saturn.
Jupiter. It is a gas giant planet.
For the same reason that our atmosphere on Earth does not escape into space - gravity.
Saturn.
Saturn has the largest family of moons.