JPG is lossy — every save degrades the image. PNG is lossless. Converting JPG → PNG preserves the current state.
Why convert
- **Multiple edits** — JPG re-saves compound compression artifacts
- **Screenshot base** — annotate a JPG without further degradation
- **Archival** — PNG captures the exact state
- **Tool requirements** — some editors prefer PNG
The catch
PNG files are 3–8× larger than the source JPG. Plan for the space.
No "un-lossy" magic
Converting JPG → PNG doesn't undo existing JPEG artifacts. It just stops further degradation.
Batch
Drop 200 JPGs → download 200 PNGs in a ZIP.