Why convert to JPG
JPG is the most widely accepted picture format. Many application forms, older programs and printing services accept nothing else. Screenshots are usually saved as PNG and pictures downloaded from websites are often WebP, so they need converting first.
What changes in the conversion
- Transparency: JPG has no transparent areas. Any see-through parts of a PNG become white.
- File size: for photos, a JPG is usually far smaller than the same picture as a PNG.
- Sharp edges: text and line drawings can look slightly softer in JPG. Choose Best quality for these.
HEIC photos from iPhones
iPhones save photos as HEIC by default. Safari can open these, so the converter works on an iPhone or Mac. Most other browsers cannot read HEIC; on those, share or export the photo as JPG from the Photos app first.
Questions and answers
Is JPEG the same as JPG?
Yes. They are two spellings of the same format. A file ending in .jpg can be renamed to .jpeg and the other way round.
Will my picture lose quality?
With Best quality the difference is not visible in normal use. Smaller file trades a little quality for a much lighter picture.