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Step 3
Select the three dot (3-dot) option at the top right corner of the screen, then select Export.
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Step 4
Under the Export flattened Image Option, hold and drag the “Quality” bar to reduce image size (this will reduce image size without disrupting image quality).
Take Note: I don’t usually adjust the image dimension, adjusting it sometimes damages image quality while compressing image. Only follow step 4 above, perhaps if there is need to change size, you can proceed to doing so.