How much smaller will the JPG be?

For photographic content, typically 70 to 90 percent smaller. For simple graphics the saving is smaller. The exact before and after sizes are shown once the conversion finishes.

Can I control the JPG quality?

Yes. Use the quality slider in the options. Lower values give smaller files; around 80 is a sensible balance for sharing.

Is JPG the same as JPEG?

Yes. They are two spellings of one format. Old versions of Windows limited extensions to three letters, which is where .jpg comes from.

PNG to JPG Converter Online

PNG is excellent for screenshots and graphics, and wasteful for photographs. A photo saved as PNG can easily be five to ten times heavier than the same picture as a JPG, which is how attachments bounce and upload forms complain.

This converter rewrites a PNG as a JPG. The dimensions stay the same; the file gets a great deal lighter.

Before and after

Top-down view of hands typing on a laptop at a wooden desk with a notebook, tea and a plant — The picture and its 3840 × 2160 px size stay the same. Only the file changes: PNG at 10.31 MB in, JPG at 1.62 MB out.
JPG drops detail the eye barely notices, which is why the file is 84% smaller.
The numbers are from a real run of the tool above. The pictures here are smaller previews of the actual files.

The same photo saved as JPG — The picture and its 3840 × 2160 px size stay the same. Only the file changes: PNG at 10.31 MB in, JPG at 1.62 MB out.
JPG drops detail the eye barely notices, which is why the file is 84% smaller.
The numbers are from a real run of the tool above. The pictures here are smaller previews of the actual files.

How to use it

Drop a PNG onto the box above.
It is converted to a high-quality JPG immediately.
Compare the sizes shown in the result and download.

What happens to transparency

JPG cannot store transparent pixels. Any see-through area of your PNG is placed on a white background before saving, which is what most people expect for documents and product photos. If you need the transparency to survive, keep the file as PNG or use WebP.

When to keep the PNG

Screenshots of text, line drawings and flat-colour logos can look worse as JPG, with faint halos appearing around sharp edges, and may not even get smaller. Convert those only when a site insists on JPG. For photos, scanned pages and anything with gradients or texture, JPG is the better container.

Frequently asked questions

How much smaller will the JPG be?: For photographic content, typically 70 to 90 percent smaller. For simple graphics the saving is smaller. The exact before and after sizes are shown once the conversion finishes.
Can I control the JPG quality?: Yes. Use the quality slider in the options. Lower values give smaller files; around 80 is a sensible balance for sharing.
Is JPG the same as JPEG?: Yes. They are two spellings of one format. Old versions of Windows limited extensions to three letters, which is where .jpg comes from.