Why convert PNG to JPG without uploading the original?

A PNG-to-JPG conversion mainly exists to shrink the file, and shrinking a file shouldn't require sending the large original somewhere first. NearIMG performs the conversion in your browser, filling transparent areas with white and re-encoding to JPG locally, so only the smaller result ever needs to exist outside your device.

How it works

1. Drop in PNG files — screenshots, exports, whole batches.
2. Set the JPG quality (85% by default). The measured ≈ output size updates for each file as you move the slider.
3. Click Convert — transparency is flattened to white, everything is re-encoded to JPG on your device, and the result downloads (a ZIP for batches).

This direction is about size: photographic PNGs and screenshots with gradients routinely shrink to a fraction of their PNG size as JPG. Two things don't survive the trip, though. Transparency is gone permanently — JPG has no alpha channel, so transparent areas become white. And hard edges (UI text, line art, logos) can pick up faint ringing at lower quality; keep 80%+ for those, or use PNG→WebP instead, which sidesteps both problems.

What happens to transparency?

JPG has no transparency, so any transparent areas are filled with white.

Will the file get smaller?

Usually yes — JPG is lossy, so screenshots and photos shrink noticeably compared with PNG.

Which PNGs should stay PNG?

Anything that needs its transparency (logos, icons destined for varied backgrounds) and graphics where razor-sharp edges matter more than file size. For those, WebP is the size-saving option that keeps alpha; JPG is best kept for photographic content.