Divide the picture into nine adjacent areas and export them in order from left to right and top to bottom.
A single image can be up to 12 MiB and 16 million pixels. GIF/Animation WebP's normal image operations only process the first frame.
These are demo inputs and sample results, and do not mean that your data has been processed.
When the width and height are not divisible by 3, the remaining pixels are assigned to the end grid without losing edge pixels.
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