How much smaller will the JPG be?

For photographic content, a JPEG at quality 90 is typically 5–10× smaller than the source PNG. For graphics with flat colour, the savings are smaller.

What about transparency?

JPEG does not support transparency. Pick a background colour (default white) — transparent pixels will be flattened onto it.

Are my images uploaded?

No. PNG decoding and JPEG encoding both happen on a canvas inside your browser.

PNG to JPG Converter — Free, Browser-Based, No Upload

How to convert PNG to JPG

Pick one or more .png files.
Set the JPEG quality (90 is a safe high-quality default; 75 gives smaller files).
Choose a background colour — transparent pixels will be flattened to this colour.
Press Convert to JPG, then download each result.

Common use cases

Email-friendly photos: shrink a 20 MB phone screenshot to a few hundred KB.
Web upload limits: many sites cap uploads at 2 MB — JPEG quality 80 easily fits.
Photo printing: labs expect JPEG, not PNG.

Frequently asked questions

Will graphics with hard edges look bad?

Possibly. JPEG is tuned for photos; hard edges (logos, screenshots, text) often pick up ringing artefacts. Stick with PNG for those.

Why is the file still large at quality 90?

Quality 90 keeps fine detail — and detail costs bytes. Lower the slider or scale the image first with the Image Resizer.

Does it work on iPhone?

Yes. Canvas-based encoding works on Safari, Chrome and Firefox on iOS / Android.