What is Convert PNG to JPG online?
TL;DR: Shrink44 converts PNG to JPG locally — flattening transparency onto a background colour you choose, at your chosen quality, with bulk support and no uploads.
Converting PNG to JPG is the fastest way to shrink large screenshots and graphics: JPG photos are typically 5-10× smaller than the equivalent PNG.
Because JPG has no transparency, Shrink44 lets you pick a background colour (white by default) to fill any transparent pixels during conversion. Everything runs locally via the Canvas API.