Why convert PNG to JPG?
PNG is lossless, which is great for fidelity but terrible for file size on photographs — a single PNG photo can run several megabytes. JPG uses lossy compression designed for photographic content, so converting PNG → JPG typically cuts the file size by 5–10× with no visible loss. That makes JPG the right choice for sharing photos, attaching to email, uploading to sites with size limits, or anywhere bandwidth and storage matter.
PNG vs JPG: when each wins
| PNG | JPG | |
|---|---|---|
| Compression | Lossless | Lossy |
| File size on photos | Large | 5–10× smaller |
| Text & sharp edges | Crisp | Blurry halos at low quality |
| Transparency | Full alpha | None — flattened to white |
| Re-edit safe | No generational loss | Loses quality each save |
| Best for | Screenshots, logos, UI assets | Photos for sharing & web delivery |
How to convert PNG to JPG
- Drop your PNG files — drag onto the upload zone, click to browse, or paste from clipboard. Up to 30 at once.
- Set the quality — 90% is a safe default. Lower it for smaller files, raise it for maximum fidelity.
- Click Convert — decoding and re-encoding happen locally with the Canvas API. Your files stay on your device.
- Download — one by one, or all at once as a ZIP.
The transparency catch
JPG cannot store transparency. If your PNG has transparent or semi-transparent areas, we flatten them onto a white background before encoding — otherwise those pixels would come out black. This matters most for logos, icons, and cut-out images. If you need to keep the transparent background, do not convert to JPG: keep the PNG, or use our PNG to WEBP tool, which preserves the alpha channel while still shrinking the file.
When you should not convert to JPG
- Screenshots and text. JPG smears hard edges and text into blurry halos. PNG stays crisp and is often smaller for this content anyway.
- Images you will keep editing. Every JPG save discards more detail. Use PNG as your editing master and only export JPG for final delivery.
- Anything needing transparency. A transparent logo becomes a white-boxed logo. Keep it as PNG or WEBP.
Privacy
Every byte stays in your browser. No upload, no temporary server file, no log. The conversion runs in a <canvas> element using the browser's built-in JPG encoder.