PNG to JPG
Convert PNG images to JPG.
How to use PNG to JPG
Add one or more PNG images.
Pick the JPG quality (80–90% is ideal for photos).
Click Convert to JPG.
Download the converted images.
Why convert a PNG to JPG at all
Almost always for size. A photograph saved as PNG is typically four times larger than the same image as JPG at a quality nobody can distinguish. On a web page that is the difference between an image that appears instantly and one that trickles in — and page speed is a ranking factor as well as an irritation.
The other reason is compatibility. Older printing workflows, some upload forms, some email systems and a surprising number of legacy internal tools accept JPG and nothing else.
The transparency decision you have to make
JPG cannot store transparency, so every transparent pixel in your PNG has to become some actual colour. Choosing that colour is the one decision that determines whether the result looks right or obviously broken.
Match it to whatever the image will sit on. White is correct for most documents and web pages. Black works for dark interfaces. If the background behind the image varies, or the logo has soft anti-aliased edges, do not convert to JPG at all — that is precisely the case PNG and WEBP exist for, and a hard-edged fringe around a logo is the tell that someone converted it anyway.
Choosing a quality setting
JPG quality is a dial, not a switch, and the useful range is narrower than the 0-100 scale suggests. Nearly everything worth doing lives between 75 and 90.
- 90-95 — archival and print. Large files, no visible artefacts anywhere.
- 80-85 — the right default for the web. Typically indistinguishable from the original at normal viewing size.
- 70-75 — thumbnails and previews, where small matters more than perfect.
- Below 60 — visible blocking and colour banding. Rarely worth it; try smaller dimensions instead.
When not to convert
Keep PNG for screenshots containing text, for logos and icons, for diagrams and charts, and for anything with transparency. JPG's compression works by smoothing away high-frequency detail, and a hard black-on-white letter edge is nothing but high-frequency detail — which is why JPG screenshots of text look faintly grubby.
Also keep PNG for any image you will keep editing. Every JPG save re-compresses and loses a little more; ten rounds of open-edit-save is visibly degraded. Work in PNG, export to JPG once at the end.
Every step runs inside your browser, using the WebAssembly and Canvas APIs your device already ships with. No file is uploaded, no copy is kept, and nothing sits in a queue on a server waiting to be deleted — which is also why the tool keeps working with the network disconnected.
Frequently Asked Questions
What happens to transparent areas?
JPG doesn't support transparency, so transparent pixels are filled with white.
Why is the JPG so much smaller than the PNG?
JPG uses lossy compression designed for photos, typically producing files 5–10× smaller than PNG for photographic content.
Is the conversion private?
Yes. Files are converted in your browser and never uploaded.
What happens to the transparent parts?
They are filled with the background colour you choose, because JPG has no way to store transparency. Pick the colour the image will sit on — usually white. If the background varies, keep the PNG or use WEBP.
How much smaller will the file be?
For photographs, typically 70-90% smaller at quality 85, with no visible difference at normal viewing size. For flat graphics the saving is much smaller, and the image may look worse — those should stay PNG.
Will I lose quality?
Some, by definition — JPG is lossy. At quality 85 and above it is imperceptible on photographs. On text and sharp-edged graphics it is visible at any setting, which is why those should not be JPGs.
Should I convert screenshots to JPG?
Usually not. Screenshots are mostly text and interface edges, exactly JPG's weakest case: you get haloes around letters and a larger file than a well-compressed PNG. Keep screenshots as PNG or WEBP.
Can I convert back to PNG afterwards?
You can, but you get a PNG of the compressed image — the detail JPG discarded is gone permanently. Keep the original PNG.
Related tools
Keep reading
- JPG, PNG, WEBP or AVIF: How to Actually Choose
A decision you make dozens of times a week, usually by habit. Here is the rule that gets it right, and what each format costs you when you get it wrong.
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