Use the original high-resolution file
Avoid enlarging the image too much
Resize with high-quality interpolation
Sharpen the image lightly
Reduce compression artifacts
Increase image quality settings when exporting
Shoot in better lighting
Use a lower ISO setting
Stabilize the camera to prevent blur
Clean the lens before shooting
Use a higher-resolution camera
Re-edit from the source file instead of a compressed copy
Use AI upscaling tools
Apply noise reduction carefully
Crop less aggressively
Save images in lossless or high-quality formats