Batch converting JPG to PNG is needed when you require lossless quality for further editing, need transparency support, or are preparing images for a platform that requires PNG format. Here is how to convert multiple JPGs to PNG simultaneously for free.
When to Convert Multiple JPG to PNG
- Preparing product photos for editing that requires transparency (background removal)
- Converting photos to PNG for further processing without additional compression loss
- Platform requirements that only accept PNG (some apps and specific design tools)
- Creating screenshots or graphics libraries that need to remain sharp after editing
How to Batch Convert JPG to PNG Free
Upload all your JPG files to imgresizr.com at once. Open the Convert tool and select PNG as the output format. Click Convert All. PNG files are lossless, so no quality settings are needed — the maximum quality is always used. Download all converted files as a ZIP archive. Note: PNG files will be larger than the original JPGs — this is expected and correct.
JPG to PNG File Size Increase
| Original JPG | Resulting PNG |
|---|---|
| 100 KB photo | 300–800 KB |
| 500 KB photo | 1.5–4 MB |
| 2 MB photo | 6–15 MB |
Quality Consideration
Converting JPG to PNG does not recover any quality lost during original JPG compression. The PNG file will be larger, but any compression artefacts from the original JPG are preserved. For the best PNG quality, use the original uncompressed source if available. Use JPG-to-PNG conversion when you need to continue editing a JPG without any further quality loss.
Batch convert multiple JPG files to PNG for free at imgresizr.com — no software, instant results, ZIP download.