Image Conversion
Convert PNG to JPG
Photographs saved as PNG are usually many times heavier than they need to be. Converting them to JPG applies photographic compression and typically removes most of that weight while looking identical on screen.
Choose the quality level yourself so you decide the balance between file size and fidelity.
Drag images here
Batch conversion supported · files never leave your device
How to use this tool
- 1Add your PNG files.
- 2Set the quality slider — 90 for archival copies, 75 for web use.
- 3Press Convert and compare the resulting sizes.
- 4Download the JPG files individually or as a ZIP.
Why PNG photos are so large
PNG stores every pixel exactly. That is ideal for a screenshot where a thousand adjacent pixels share the same colour, but terrible for a photograph where almost every pixel differs slightly from its neighbours. JPEG was designed for precisely that case: it exploits the fact that human vision is far more sensitive to brightness than to fine colour variation, and encodes the image accordingly.
Transparency is flattened
This is the one irreversible consequence of the conversion. Any pixel that was partly or fully transparent is blended with a white background. Semi-opaque drop shadows become solid grey halos, and rounded corners gain white triangles. If that matters, convert to WebP instead — it keeps the alpha channel and is still far smaller than PNG.
Practical examples
- A 6 MB PNG export from a design tool becomes a 320 KB JPG for a blog header.
- A batch of scanned documents saved as PNG is converted for emailing within attachment limits.
- A stock photo delivered as PNG is converted before being uploaded to a marketplace that caps file size.
When not to convert
| Image type | Keep PNG? | Reason |
|---|---|---|
| Logo with transparency | Yes | JPEG cannot store an alpha channel |
| Screenshot containing text | Yes | JPEG blurs sharp edges and thin strokes |
| Line art or icons | Yes | Flat colours compress better losslessly |
| Photograph | No | JPEG is dramatically smaller at equal perceived quality |
Not sure how heavy your file actually is? Check it with the file size checker first.
Frequently Asked Questions
What happens to transparent areas?
JPEG has no alpha channel, so every transparent pixel is composited onto a white background before encoding. If your logo needs to sit on a coloured surface, keep the PNG or use WebP.
How much smaller will the JPG be?
For photographs stored as PNG, reductions of 80–95% are common. For flat graphics the saving is smaller and the quality cost is higher.
Which quality should I pick?
90 keeps the conversion visually clean. Drop to 75 when file size matters more than pixel-level fidelity, and inspect the result before publishing.
Is PNG to JPG reversible?
You can convert back, but the discarded detail does not return. Keep the PNG as your master copy.