Convert PNG to JPG online
Choose one or more images and this PNG to JPG converter saves each as a high-quality JPG, with transparent areas filled in white.
Last updated
Your files never leave your device. Everything is processed in your browser and nothing is uploaded.
How to use the PNG to JPG converter
- Press Choose images and select one or more PNG files, or drop them onto the box.
- Each image is converted straight away. Progress and the new file size are shown in the list.
- Press Download next to each JPG to save it.
- Use Convert more images to add another batch, or Clear list to start over.
How the PNG to JPG converter works
PNG stores every pixel exactly, which is perfect for screenshots and graphics but makes photos large. JPG uses lossy compression designed for photographs, so the same picture is often several times smaller as a JPG.
The converter decodes each PNG in your browser, paints a white background, draws the image on top and saves it as a JPG at quality 0.92. The white fill matters because JPG has no transparency: without it, transparent areas would turn black.
Formula
For each file: canvas size = image size; fill the canvas white; draw the PNG; export as a JPEG at quality 0.92.
At 0.92 most photos look the same as the original on screen, while the file is still much smaller.
Example
A 2.4 MB PNG of a photo, 1,920 by 1,080 pixels, typically becomes a JPG of around 300 to 600 KB at the same dimensions, a saving of roughly 75 to 88%.
A logo with a transparent background becomes a logo on solid white, which suits documents and websites with white pages.
Tips and common mistakes
Keep PNG for text and logos
Sharp edges and flat colours can look blotchy as JPG. Convert photos, and keep screenshots of text as PNG.
Going the other way
To get back to a lossless format for editing, use the JPG to PNG converter. It can't restore detail a JPG has already thrown away, though.
Make the file even smaller
If the JPG is still too big, resize it to fewer pixels or compress it with a lower quality setting.
Check images with transparency
If your PNG has a see-through background, look at the preview to make sure white suits the place where you will use it.
Frequently asked questions
Are my PNG files uploaded?
No. Conversion happens in your browser. Your images never leave your device.
What happens to transparent backgrounds?
They become white, because the JPG format can't store transparency.
Can I convert many PNGs at once?
Yes. Select or drop as many as you like; they are converted one after another and each gets its own download button.
Does conversion change the dimensions?
No. The JPG has exactly the same width and height as the PNG.
Why is my JPG bigger than the PNG?
Simple graphics with few colours compress very well as PNG. As a JPG they can get bigger and blurrier, so keep those images as PNG.