I have a mix of PNG, WebP and JPG images. How do I turn them all into JPG in one go?
Add them all to the format converter at once and choose JPEG. PNG and WebP files are rewritten as JPEG, files that are already JPEG are left as they are with a note, and transparent images get the background color you pick. One catch: the ZIP holds the converted files, so the JPGs that were left alone are your originals, to add yourself.
The usual situation
A folder of product images gathered from several places: photos you shot on your phone as JPG, supplier images as PNG with some transparent backgrounds, and pictures saved from the supplier's website that turned out to be WebP. Now a platform or a designer wants JPG only. Opening and re-saving each one in an editor takes ages; the converter handles them together.
What happens to each kind
- PNG and WebP without transparency: rewritten as JPEG at the chosen quality.
- PNG or WebP with transparent areas: drawn over the background color you set, then saved as JPEG, with a note in the row that the transparency was lost.
- Files that are already JPG: left unconverted with a note, since re-encoding them would only cost extra quality.
The tool identifies each file by its contents, not its name, so an image called .jpg that is really WebP inside gets converted as it should. The default background is white, which usually suits product listings, but you can pick your brand color instead.
Steps
- Open the Image format converter and drop the whole set, up to 30 images at a time. Go over that and a message appears, and files are only added up to the limit.
- Choose JPEG and set the quality; 90 is a safe choice.
- Pick the background color for transparent images before downloading, because changing it reconverts the whole batch automatically.
- Read the summary line at the bottom: how many were converted, how many left as is, how many failed.
- Click Download all to get converted-images.zip.
Why are some images missing from the ZIP?
Because the ZIP only holds images that were actually converted. The files that were already JPG never got a new version, so your originals are the final copies. The simple routine: unzip into a new folder, then copy the original JPGs into it, and you have a complete folder in one format. If a file failed, its row explains why, and you can take it out of the list with its remove button and carry on with the rest.
After converting
Photographic PNGs usually shrink a lot as JPEG, while WebP files may grow a little. If the platform caps file size, run the finished folder through the Image compressor at a lower quality; it re-encodes every JPG, including the ones the converter left alone.
Common questions
Do the file names change?
No. The name stays and only the last extension changes to .jpg.
Can I make some images PNG and others JPG in the same batch?
No. One batch has one target format. Convert each group as its own batch.