How to compress an image
Compressing images can reduce the weight of a page, attachment, or catalog. The right output balances file size and visible detail.
01Select the imageChoose the file you want to optimize.
02Adjust compressionSet the level for the intended use.
03Download and compareReview the result before replacing the original.
File size versus visual quality
More compression usually creates a smaller file, but can introduce artifacts or lose detail.
Try a moderate level and inspect text, edges, and gradients before publishing.
When to keep the original
Keep the source file for future edits or uses that require higher resolution.
A compressed image is a delivery variant, not always a replacement for the master file.
Frequently asked questions
Does compression always reduce size?
It is intended to reduce file size, although results depend on the format and source image.
Can I restore quality later?
Lost detail cannot be restored; keep the original before replacing it.
Is it useful for website images?
Yes. Review the result at the resolution where it will appear.
What should I inspect?
Check text, logos, thin edges, and gradient areas.