If you want the renderale size, this can be grabbed by a quick bit of javascript accessing the window.screen property (for example). There are other ways as well.
It depends on the browser and how you define "window". I think of a window as the thing that pops up when an application is opened. It can be any size up to the screen resolution if the task bar auto-hides or if the browser is in full-screen mode.
My Computer
Computer type
PC/Desktop
Computer Manufacturer/Model Number
OQO 2+
OS
Windows 8 Pro w/MC 32-bit
CPU
Intel Atom 1.86 GHz
Motherboard
OQO 2+
Memory
2 GB
Graphics Card(s)
Intel GMA 500
Sound Card
IDT
Monitor(s) Displays
LCD
Screen Resolution
800 x 480 (portable) 1280 x 1024 (docked)
Hard Drives
64 GB SSD
PSU
9 Ah Battery (portable) or OQO Brick (docked)
Case
Shirt Pocket Sized
Cooling
Tiny Fan
Keyboard
Slide out (portable) DiNovo Edge (docked)
Mouse
Eraser head (portable) Logitech Bluetooth (docked)
If you maximize the browser window size, it will maximize to 1366px x 768px.
The actual viewport area in the browser is a little bit smaller than that vertically, and it is further affected by the overflow bar horizontally (and possibly vertically too).
If you hit F11 on your browser (to enable fullscreen), and apply the following style:
Code:
element.style {
margin: 0;
overflow: hidden;
}
You will be able to fill your screen resolution with the contents of a webpage.
My Computer
Computer type
PC/Desktop
OS
Windows 8 Pro x64
CPU
i7 3820 @ 4.68GHz
Motherboard
ASUS Rampage IV Extreme RoG BF3
Memory
F3-12800CL9D-8GBXL (32GB)
Graphics Card(s)
GTX 480 SLI
Sound Card
Auzentech X-Fi HomeTheater HD
Monitor(s) Displays
Sony 32V5500
Screen Resolution
1920 x 1080
Hard Drives
LSI MR9260-4i (RAID10):
Toshiba DT01ACA300 x 4
iaStorA:
OCZ Vertex Enterprise 120GB
ST3500320AS 500GB
Intel 520 Series 120GB
PSU
OCZ ZX 1250W
Case
HAF X
Cooling
H80
Keyboard
Cyborg V.7
Mouse
Razer Lachesis 3.5G 5600dpi
Internet Speed
23296kbps ds / 812kbps us ADSL2+
Browser
Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:32.0) Gecko/2010
Sorry. I was asking about standards if they exist. The standard screen size, as in the the area for the website minus, taskbars and menubars etc of the OS and browser.