File size
Option A
Usually smaller
Option B
Usually larger
FAQ Guide
Use lossy compression when smaller delivery files matter most, and lossless compression when preserving exact visual or source detail matters more.
Usually smaller
Usually larger
May remove detail
Preserves source data
Photos and delivery
Screenshots and assets
No. It is often the right choice for web photos and uploads when the final image still looks good.
Avoid it for screenshots with text, logos, diagrams, and files that will be edited repeatedly.
No. Keep the original source file if you may need to export a cleaner version later.