Lossless region crops
Draw boxes on the preview and export clean PNG crops from the original image pixels, not the scaled view.
100% client-side - no uploads
Precision image regions,
ready for production.
Crop, replace and export image regions at full resolution. BoxBox keeps the workflow fast, private and predictable for creative teams, dataset builders and AI image pipelines.
0 uploads to server
PNG metadata round-trip
16 region presets
From upload to export, in six guided steps.
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01
Load an image
Drop an image here or click to pick a file. Everything runs locally - nothing is uploaded.
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02
Pick an aspect ratio
Constrain new boxes to a fixed ratio, or use "Auto" to draw any shape.
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03
Draw your regions
Click and drag on the image to draw a box. You can create as many boxes as you need.
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04
Confirm, edit or download
Use the popup above each box to confirm its position, edit coordinates, download the crop or remove it.
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05
Replace a region
Drag a new image directly inside the highlighted box to swap that area automatically.
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06
Export the result
Download single crops, the merged image or store coordinates inside PNG metadata.
Why BoxBox
Regional replacement
Drop replacement images into confirmed boxes, then export the merged result without rebuilding the file by hand.
Metadata workflow
Store region coordinates inside PNG metadata so selected areas can be restored later with the same source image.
Bulk region control
Generate matrices or paste coordinate lists when you need repeatable crops for datasets, products or variants.