PNG to JPG
The biggest size drop of any conversion here — at the cost of transparency.
Converting to JPG loses transparency — transparent areas become white.
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Lower quality means a smaller file. Applies to JPG and WebP only.
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These files are processed locally. Nothing is uploaded.
What changes when you convert PNG to JPG
PNG stores every pixel losslessly, which is why screenshots and exported graphics from design tools end up surprisingly large. JPG throws away detail the eye is unlikely to notice and typically lands 70-90% smaller for photographic content. If your PNG is a screenshot of a photo, or a graphic with a plain background, that trade is almost always worth it.
The catch is the alpha channel. JPG has no concept of transparency, so any transparent area in your PNG becomes solid white. If you are converting a logo with a cut-out background, read the result carefully before publishing it.
This conversion is also lossy in a second sense: once detail is discarded, converting the JPG back to PNG will not bring it back. Keep the original PNG if you might need to edit the image later.
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- Shrinking phone screenshots before sending them by email or messaging apps
- Preparing photos for a website or form that rejects PNG uploads
- Cutting storage used by exported UI mockups that have no transparency
- Meeting an upload size limit on a job portal or government form
PNG vs JPG
| PNG | JPG | |
|---|---|---|
| Compression | Lossless | Lossy |
| Transparency | Supported | Becomes white |
| Typical size | Large | 70-90% smaller |
| Best for | Graphics, screenshots | Photos, email, uploads |
Other PNG conversions
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Frequently asked questions
Will my transparent background turn white?
Yes. JPG has no alpha channel, so transparent pixels are flattened onto white. If you need to keep the transparency, convert to WebP instead, which supports it and still compresses well.
How much smaller will the file be?
For photos and detailed screenshots, expect a 70-90% reduction at the default quality setting. Flat-colour graphics such as diagrams or icons compress less dramatically, because PNG already handles large areas of one colour efficiently.
Can I get the quality back by converting to PNG again?
No. The discarded detail is gone permanently. Always keep the original PNG if you may need to edit the image later — convert to JPG as the final step, not midway through your workflow.
Is the image uploaded anywhere?
No. The encoder runs in your browser via WebAssembly. You can confirm this by opening your browser developer tools and watching the network tab while the conversion runs — no outbound request carries your file.