Yes, you can change all ARTBOARD size at once, watch here:

https://www.youtube.com/watch?v=NoPungS8KXI

urgently needs a fix!

3, 2, 4, 1 this needs a fix

In order of importance, I'd say: 3, 4, 1, 2

Hi Neeraj;
3) is most important, followed closely by 4) .
1) less so - perhaps it should be a preferences option?
2) seems niche to me. Nice to have, if you happen to be switching tons of artboards between known sizes. But this is by no means the general use scenario which absolutely 3) is.

Typing in an adjustment to width or height secondarily click and drag to resize and would be my preferred methods.

Thanks Neeraj, but I'm not technical, so I apologise missing what you're saying.

As voted for in this thread, to be able to transform both artboard and objects synchronously and simultaneously has been a fundamental function lacking for years.

Just think of all the layers in PS. You have to resize all the layers one by one?

That's what's happening in AI sir.

Thanks for raising this request.

We'd like to hear your opinion on what all should be considered as a part of this feature.

There are four different ways of transforming an artboard in editing mode:
1. Horizontal to Vertical (and vice-versa) orientation change
2. Picking a different preset from dropdown (e.g. Letter to A4)
3. Cursor based scaling from the eight controls of selected artboard, and
4. Changing numbers in the W/H fields in panels

Which of these do you think should be considered as a part of this feature? Please share your thoughts in the comments.

Can you please make realistic, not true view? Thank you.

I could REALLY use this feature. A lot of my logos I design depend on the artboard size for the logo lockup to send to clients so they know how much cushion to give the logo when designing something. It's a pain in the butt to resize both manually.

Agree - need it almost daily! Adobe please implement ASAP

Still no action for this? I'm in the same position as the OP. This issue can't be something that is not common. I mean, to have numerous artboards and not be able to mass edit is not okay. I hope this is resolved soon.

Really so much time passed. When someone start to implement it? Looks like never. 1 year passed since I've created this. lol. or not? Well it's very soon, this 4 month will pass very quickly.

Thats really AWKWARD. Such a simple and useful thing and voted - and been ignored..

Really, 5 month passed already. This feature is really needed! Can you just implement so simple option? Art already moved if artboard moved, so why Art can't be resized when artboard resize?
Shivendra Agarwal ?

Again: but it's so much time already passed, this is really needed feature for my project.
I'm developing 2d game and I have a lot of graphics resources and I need to modify them with artboard. I have a lot of graphics, a tons of small images... Can you maybe give me some alpha build with this feature working in some way? I don't care where it will be, in a menu or by some key shortcut + mouse. I just need to be able to scale artboard and art inside it...

I see, thanks. But this is really needed feature.. can you please put it on the top of list so it's will be processed asap? Thank you in advance.

@Volodymyr: Added to Backlog signifies that we are clear about user requirements and will be picking up this feature development shortly.
Status of this post will be updated as we make progress on the feature.

Shivendra Agarwal ? I really need this!

And what is that means? When this feature will be implemented?

I have now 286 artboards already and I need to resize them later, I'm no doing so, because waiting of this feature will be implemented so I can easily select them all and resize with arts inside. All in one click and in no time! Please help!