Image converters · OnDevice
Convert PNG to JPG without uploading
Drop one PNG or a whole batch. Conversion happens on this device, and you decide what colour replaces any transparent background.
No upload. Files never leave your device.
Drop PNG files here
Or use the button below. Multiple files are fine.
Results
No files yet. Nothing is sent to a server when you add them.
When to turn a PNG into a JPG
PNG is ideal for screenshots, logos, and anything with a transparent background, but a PNG photo can be several megabytes. Many upload forms, email clients, and older apps only accept JPG, or cap the file size. Converting here keeps the original resolution, shrinks the file, and never sends it to an online converter.
Because JPG cannot store transparency, pick the background first. White suits documents and most web forms; black or a brand colour suits dark designs. If you then need an exact size limit, run the JPG through the compress to KB tool. Got iPhone photos instead? Use HEIC to JPG.
Frequently asked questions
Does this upload my PNG files?
No. Files are read and converted in a Web Worker on your device. The site is static, so there is no conversion server that could receive them.
What happens to a transparent background?
JPEG has no transparency, so transparent and semi-transparent pixels are blended onto a solid colour. White is the default; you can switch to black or pick any colour before converting. If you need to keep the transparency, stay with PNG or use WebP.
Can I convert PNG to JPG without losing quality?
JPEG is always lossy, but at quality 92 (the default) or higher most photos look the same as the PNG. Raise the slider toward 100 for sharp text or screenshots, or lower it for a smaller file. The width and height are never changed.
Why is my JPG smaller than the PNG?
PNG stores every pixel losslessly, which is large for photos. JPEG discards detail the eye rarely notices, so a photo saved as JPEG is often several times smaller. Flat graphics with few colours can occasionally come out larger as JPEG; keep those as PNG.
Does it work on iPhone, Android, Mac, and Windows?
Yes, in any current browser such as Safari, Chrome, Edge, or Firefox. On iPhone, choose the files from Photos or Files; the converted JPGs can be saved back to Files or shared.
Can I convert many PNGs at once?
Yes. Add as many files as your device's memory allows, convert them, and download everything as one ZIP. Files over 40 MB each are refused.