Images · Free browser tool
Private PNG to JPG Converter
Convert a PNG into a broadly compatible JPG locally, with adjustable quality and an explicit background for transparent pixels.
Runs on this device
No file upload
Free to use
Private workspace
Flatten a PNG into a verified JPG without sending the image to a conversion server.
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Choose a file to begin
Flatten a PNG into a verified JPG without sending the image to a conversion server.
What this tool does
A focused job, with a visible boundary.
Flatten a PNG into a verified JPG without sending the image to a conversion server.
Explicit transparency background
Decoded output verification
Know the limits
Local does not mean unlimited.
Browser processing protects the file from an upload workflow, but the browser, device, output format, and selected settings still matter.
- JPG does not support transparency, so transparent pixels are replaced with the selected background.
- JPEG compression can change fine detail and color.
- Browser re-encoding removes source metadata.
Four local steps
How to use png to jpg.
- 01
Choose one PNG image.
- 02
Select JPG quality and the transparency background.
- 03
Convert locally and inspect the verified preview.
- 04
Download the JPG copy.
Clear answers
PNG to JPG questions.
What happens to transparent pixels?
They are replaced with the background color you select before conversion.
Is JPG always smaller than PNG?
Often for photographs, but not always for small graphics. NullKit shows the exact output size.
Does conversion upload the PNG?
No. The browser performs the complete conversion locally.