Platform Sizes
One image → many platform sizes in one pass, processed on-device
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Click or drop images here (multiple OK)
Processed locally — nothing is uploaded
One image fits every platform
Resizing by hand for every platform is wasted effort. Open this tool, pick a pack, and get every target size at once: "Social" covers Xiaohongshu 3:4, article cover and header; "Avatar" covers two square sizes. Pick cover to fill, contain to keep everything visible.