📝 Size (Drawer)

Somewhere in every ComfyUI workflow someone is doing resolution arithmetic by hand - "16:9 at 1.5 megapixels, so that's... 1504×896?" DrawerSize is the node that does that math for you. Pick an aspect ratio, set a megapixel budget, and it hands you clean width and height integers rounded to a multiple of 16, which is what the latent models actually like.

It's one of the nine utility nodes in ComfyUI-Drawer, Kuroi's mobile-friendly drawer platform. Where it shines is the Deck: in the drawer you get aspect-ratio chip presets and a megapixel slider instead of two number boxes, which is exactly what you want when the "keyboard" is a tablet screen.

What it computes

Four inputs:

• ratio_ - an enum: custom, 1:1, 4:3, 3:2, 16:9, 21:9, 9:16, 2:3, 3:4. Everything but custom is a preset that recalculates width/height from the ratio.
• megapixels_ - a float, 0.25 to 4.0, step 0.05. Your resolution budget.
• width_ / height_ - ints, 64 to 8192, step 16. Only used when ratio_ is custom.

Four outputs: width, height, megapixels, and ratio (the enum string passes through).

The mechanism is simple: for a non-custom ratio it solves for width and height that hit the megapixel target at that aspect ratio, then rounds each side to the nearest 16 with a 64px floor. In custom mode it just rounds your typed width/height to 16 and passes them through. The megapixels output is the actual value after rounding - so what it reports is what your latent really gets, which is the honest number for EXIF/filename purposes.

Wire width and height into an Empty Latent Image, or convert those widgets to inputs on a sampler chain. The ratio string output is handy for filenames or conditioning logic - e.g. a filename prefix that records 16:9.

Installing it

DrawerSize ships with the whole pack:

cd ComfyUI/custom_nodes
git clone https://github.com/Kuroi961/ComfyUI-Drawer.git
pip install -r ComfyUI-Drawer/requirements.txt

Or just search ComfyUI-Drawer in ComfyUI Manager. requirements.txt is a single line (Send2Trash), and there are no model files to download for any of these nodes.

Gotchas

The one that trips everyone: when a ratio is selected, your hand-typed width_/height_ are ignored. That's by design - a preset supersedes manual dims. Want exact pixels? Set ratio_ to custom.

Second: 16-rounding means a "1.5 MP, 16:9" request isn't exactly 1.5 MP when it comes out the other end. The node knows and reports the real number. If you need a very specific resolution, custom is your friend.

It's a small utility, but for anyone handing a workflow to a less-technical user, or running ComfyUI on a phone, it converts "type 1504×896 into the box" into "pick 16:9, set 1.5" - and that's the whole difference between usable and not.