Roll20 computer specs? Is that a thing?

I have a friend who is wanting to join a game I'm about to DM but he isn't sure if his computer can handle it. But I don't think there is really any certain requirements Roll20 has to run smoothly.

Roll20 itself doesn't really have specs (that I'm aware of). It can be a bandwidth hog though depending on what you are using in game (Roll20 voicechat, jukebox, large map, lots of tokens will all use up lots of bandwidth). I GM and play on both my gaming desktop at home, as well as my 2-in-1 laptop. I don't really notice a performance difference on either of them (unless I'm on a poor internet connection).

This wiki may help you out as far as designing your game to be easily accessible: https://wiki.roll20.net/Optimizing_Roll20_Performance

Well my plan is to DM Storm King, and use whatever it comes with. I wouldn't think it uses a bunch of extra stuff aside from jukebox and voice. But then again this would be the first time actually DMing a fleshed out game on Roll20 for me

I don't have SKT, but I would assume that Roll20 followed their own best practices with it (maybe someone can drop by to confirm this).

Most computers that are 5yrs or newer can handle anything that roll20 throws at it. Most computers that are older than 5yrs might handle most of what roll20 can throw at it. As roll20 is browser based, the key parts is the graphics capability and internet bandwidth. A low cpu and/or ram could cause the game to run laggy if the GM is throwing the whole suite of features at the players (such as dynamic lighting, jukebox playing multiple tracks, hundreds of tokens and tiles, etc..).

Read the wiki that Scott linked to and good luck. If you have question please post them so everyone can help you.

I'm mostly asking for a friend, as my computer handles and runs Roll20 pretty great. The friend isn't a big computer guy so he is never sure if his laptop can run much. Biggest problem is getting him to tell me what kind of computer it is lol

I use an Asus k73e with the i7 cpu (it is about 5 yrs old). I changed the primary HD to an SSD. My laptop handles anything that roll20 has with ease including the dynamic lighting and multitude of tokens on a complex map.

I've noticed several of my players have a hard time running certain maps due to lag. We meet live and use roll 20 for maps and rolling and on certain occasions they will lag or sometimes even crash and too large of a map makes this worse. Granted they are using pretty janky netbooks (one is an XP an another is a chrome book (The guy using a Microsoft surface doesn't have many problems)) and I have a bad habit of overly large maps (I'm getting better I swear) Like people above say, most modern computers will be able to run it and if any issues arise cutting down on excess like reducing use of FX or cutting overly large maps into segments.

Problem is some of the maps can't be cut. I am running a game using the Minotaur maze from the Roll20Con exclusive pack (The dungeon one.) and at full scale that puppy is almost 75x75 squares! I mean it's a bitching map, and both me and the players are loving it, but its crashed out the game like twelve times just tonight... Admittedly we're all using some jacked ass equipment and my net's nothing to write home about but DAMN, that was some BULL!

I see you are a plus member.
Dynamic lighting can be a real strain for low end computers, at it's extreme it can crash their browser's scripts and reveal the entire map to them.
The quality of the voice and jukebox depends on their bandwidth that is unrelated to their computer's specs other than the internet card/wireless adapter if it is slower than the incoming internet.

A PC of about 300$+ either a laptop or a desktop will run everything perfectly fine. A laptop under 300$ and that was purchased at least 5 years ago might prove difficult in running games on it.

Windows 8 or 10 will generally have no problems, Windows 7 will handle most, XP....will have your player cursing the crashed screen. I don't know much about fruit based computers, except that Safari doesn't play nice.