Load & Resize Image + Filename

ComfyUI – Load & Resize Image + Filename

A ComfyUI custom node that extends the well-known KJNodes LoadAndResizeImage with:

• a filename STRING output so you can feed the loaded file's name directly into downstream nodes (e.g. save nodes, text nodes, prompt builders)
• a folder series: every queued run loads the next image, stops after the last one
• a choice of mask: the standard MaskEditor mask, or a rectangle / freehand shape drawn right in the node

The node never crops by itself — connect image and mask to a mask crop node such as Image Crop By Mask (KJNodes) to cut out the selected area.

Workflows saved with version 1 keep working: their settings are kept and the new inputs start with defaults that behave like version 1.

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Outputs

| Output | Type | Description | |--------|------|-------------| | image | IMAGE | Loaded (and optionally resized) image as a float32 tensor (B, H, W, 3); with freehand filled outside the shape | | mask | MASK | (B, H, W) mask chosen by mask_source (1 = selected) | | width | INT | Final image width (after optional resize) | | height | INT | Final image height (after optional resize) | | filename | STRING | File stem without extension (e.g. my_photo) | | index | INT | Position of the loaded file in the folder (0 in single image mode) | | file_count | INT | Number of images in the folder (1 in single image mode) |

Inputs

| Input | Default | Description | |-------|---------|-------------| | image | — | File picker (same as standard ComfyUI Load Image) | | resize | False | Enable resizing | | width | 512 | Target width | | height | 512 | Target height | | keep_proportion | False | Scale uniformly to fit within width × height | | divisible_by | 32 | Round output dimensions to a multiple of this value | | upscale_method | lanczos | Interpolation: nearest-exact / bilinear / area / bicubic / lanczos | | source | single image | single image = the file picked in image, folder = the file at index in folder_path | | folder_path | — | Folder with the image series (can also be connected as an input) | | index | 0 | Position in the folder, 0 = first file. control after generate is set to increment | | mask_source | MaskEditor | MaskEditor, rectangle or freehand (see below) | | fill_color | yellow | Colour outside the shape for freehand: yellow / red / green / blue / white / black |

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Folder series

1. Set source to folder and enter folder_path (e.g. D:\photos\batch01).
2. Set index to 0.
3. Queue the workflow N times (e.g. Run with a batch count of 10).

Each queued run loads the next file — any file names work (.jpg, .jpeg, .png, .webp, .bmp, .tif, .tiff, .gif). Files are sorted by name with numbers in natural order (img2 before img10). The filename output carries the name of the file that was actually loaded, and the preview in the node shows the next file that will be loaded.

The series never repeats: the first run after the last file stops with "Series finished", and any further queued runs of the same series are removed from the queue (other queued work is left alone). Set index back to 0 to start again.

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Mask and cropping

The node always outputs the whole image plus a mask. To cut out the selected area, connect both to Image Crop By Mask (KJNodes) or a similar node:

[Load & Resize Image + Filename] --image--> [Image Crop By Mask] --image--> ...
                                 --mask---->

mask_source decides which mask comes out:

| mask_source | mask output | image output | |---------------|---------------|----------------| | MaskEditor (default) | the mask painted via right-click on the image → Open in MaskEditor, as in version 1 | unchanged | | rectangle | the rectangle drawn in the node | unchanged | | freehand | the shape painted in the node | outside the shape filled with fill_color |

rectangle — drag on the image to draw a rectangle; drag inside it to move it, drag its edges or corners to resize it.

freehand — paint the area to keep right in the node: Brush paints, Eraser removes, Lasso draws an outline that is filled when you release the mouse; the slider sets the brush size, Undo removes the last stroke, Clear removes everything. After Image Crop By Mask you get the smallest rectangle around the shape with everything outside the shape in fill_color.

The preview shows the rectangle / the shape's bounding box with its size in pixels. If nothing is drawn, the mask covers the whole image, so the crop keeps the full image instead of failing. With MaskEditor an empty mask stays empty, as in standard ComfyUI (Image Crop By Mask then reports an error).

In a folder series the rectangle and the freehand shape are applied to every image in the same relative position.

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Installation

Via ComfyUI Manager (recommended)

Search for "Load & Resize Image + Filename" in ComfyUI Manager.

Manual

cd ComfyUI/custom_nodes
git clone https://github.com/Slartibart23/ComfyUI-LoadResizeImageWithFilenameV02

Restart ComfyUI – no extra dependencies required beyond what ComfyUI already ships.

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Requirements

• Python ≥ 3.9 (tested on 3.12 and 3.13)
• ComfyUI (tested with 0.40 / frontend 1.55)
• torch, Pillow, numpy — all provided by ComfyUI's environment

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Usage example

[Load & Resize Image + Filename]
       │                   │
    IMAGE                STRING (filename)
       │                   │
  [Your model]     [Save Image KJ]  ← filename_prefix connected here

The filename output carries only the stem (no path, no extension), e.g.:

| Uploaded file | filename output | |---------------|-------------------| | portrait_001.png | portrait_001 | | my photo.jpg | my photo | | frame_0042.webp | frame_0042 |

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Credits

• Node logic based on KJNodes LoadAndResizeImage by kijai — MIT License
• Filename output, folder series and mask editor by Slartibart23

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License

MIT — see LICENSE.