What the converter does
- Preserves the source width and height.
- Creates a JPEG file in your browser.
- Keeps the source file untouched.
Free PNG to JPG Converter
Convert PNG images to JPG and choose the background used to replace transparency.
Runs on your device — no upload required
Drop or choose imagesChoose files from your device or drag them hereYou can also paste an image with Ctrl+V / Cmd+V.
PNG to JPG changes the file encoding while preserving the original pixel dimensions. There is no hidden resize and no server upload.
How OpenFileTools processes it
Local processing, explicit choices.
OpenFileTools decodes the source into a temporary browser canvas and encodes the selected format locally. Closing the page releases the working data.
Quick technical summary
What this tool changes.
| Property | Behavior |
|---|---|
| Processing | Browser only; no image upload |
| Original | Never changed |
| Dimensions | Preserved |
| Transparency | Replaced by selected background |
Transparency must be flattened
PNG can contain fully or partially transparent pixels; JPG cannot. Before encoding, OpenFileTools composites those pixels onto the background color you select.
- A white background is common but not mandatory.
- File size may decrease, while alpha transparency is permanently absent from the JPG copy.
- The source PNG remains unchanged.
Questions, answered.
What happens to PNG transparency?
It is flattened onto your selected solid background because JPG has no alpha channel.
Will the JPG always be smaller?
Often, but not always; content and encoding determine the result.
Does conversion resize the PNG?
No. Pixel dimensions remain unchanged.
Can I recover transparency from the JPG later?
Not automatically. Keep the original PNG.