ConvertOwl

Convert PNG to JPG — Shrink File Size, Keep Quality

PNG files are lossless and great for editing, but they're often 3–10× larger than their JPG equivalent. This tool converts PNG images to JPEG with your choice of quality, compositing transparent pixels over a white background automatically. Ideal for compressing screenshots, photos, and graphics before sharing or uploading.

90%

Drop files here

or browse to upload · paste from clipboard

Up to 50.0 MB per file

How to use this tool

  1. Upload your PNG files

    Drop one or many PNG files onto the upload area. PNG files with transparency are fully supported — transparent areas will be filled with white in the JPG output.

  2. Choose a quality level

    Higher quality means larger files and more detail. 90% (our default) is barely distinguishable from 100% and saves significant space. For web thumbnails, 70–80% is often perfectly fine.

  3. Convert and download

    Click Convert to start. Your browser encodes each PNG to JPG using a WebAssembly JPEG codec. Download individually or all at once as a ZIP.

  4. Compare file sizes

    Each downloaded file shows the size reduction percentage. A typical screenshot at 80% quality shrinks by 60–80% versus the original PNG.

Frequently asked questions