🌀 BV Regional Save Send

BV Regional Image Send gets your render back into the editor as background so you can see how the geometry held up. BV Regional Image Save (display name: BV Regional Save Send) does the same thing and saves the image to disk in one node. If your regional workflow is a production-ish loop - render, keep the good ones, adjust the layout - this is the node you leave in place permanently instead of swapping in and out.

How it works

Three inputs:

• images - the IMAGE tensor you want to save and send.
• filename_prefix (default BV_Regional) - the name prefix for the saved file, like the core SaveImage node. Set it per workflow so your regional outputs land under a recognizable name.
• document_id (STRING) - the target editor's document ID, same requirement as the preview version. Empty value raises a clean error rather than guessing, which is what you want from a save-and-send channel.

One output: images, passed through unchanged. So you can put this node mid-graph - after VAE decode, before whatever consumes the image next - and the file gets written and the editor gets its background update without you forking your image flow.

Functionally it's the regional-editor-integrated equivalent of ComfyUI's core SaveImage: it writes the PNG (with the filename prefix, under the usual output directory), shows it in the output area, sends it to the editor for the document you named, and lets the image continue down the graph. The pack builds both send nodes on top of ComfyUI's PreviewImage and SaveImage base classes, so the save behavior is the familiar one - no exotic file-handling surprises.

The workflow it belongs in

The classic shape: compiler nodes → KSampler → VAE Decode → BV Regional Image Save → (optional) further image processing. Because it both saves and sends, you can run a batch, keep every PNG, and compare each frame against its regional document in the editor - the "what did geometry produce this time" review that the background layer enables. If you only want the editor feedback and no file, use BV Regional Image Send; if you want both, this is the single node.

Install

Search BV Node Pack in ComfyUI Manager, or:

cd ComfyUI/custom_nodes
git clone https://github.com/BlackVortexAI/bv_nodepack.git

Restart, hard-refresh with Ctrl + F5. No dependencies.

The honest take

It's the "make it permanent" version of the feedback node, and the pass-through output is the part people underestimate - you don't have to reorder your graph to add saving. The one decision you'll actually make is filename_prefix; pick something per-workflow or you'll be hunting through a pile of BV_Regional_00001 files later. And remember the shared gotcha: if the editor ever stops receiving images after an update, hard-refresh the browser (Ctrl+F5) so the frontend extension reloads.