The initial idea was to fit a photo in a 1x1 image (suitable for Instagram).
Now it support 4x5 ratio too, so the name is not perfect.
You can change:
- Margin: size & color
- Border: size & color
- Background: color or a blurry version of the photo
- Shadow
- You can also tune: contarst and saturation
- You can export the image at height of: original height, 1920, 1080
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