Batch converting multiple PNG files to JPG saves time when you need to reduce the file size of an entire folder of images — for website uploads, email sending, or e-commerce product listings. Here is how to convert many PNG files to JPG at once for free.
Why Convert PNG to JPG in Batch?
- PNG files are typically 3–5× larger than equivalent JPG files for photographs
- E-commerce platforms prefer smaller JPG files that load faster
- Websites with many PNG images load significantly slower than JPG equivalents
- Batch conversion saves hours compared to converting files one by one
How to Batch Convert PNG to JPG Free
Visit imgresizr.com and upload multiple PNG files at once using the multi-file upload. Open the Convert tool and select JPG as the output format. Set quality to 90% for excellent quality or 85% for smaller files. Click Convert All and download the ZIP file containing all your converted JPGs. The entire process takes under a minute for dozens of files.
Choosing the Right JPG Quality
| Quality | Use Case | Size vs PNG |
|---|---|---|
| 95% | Professional photography | 60–70% smaller |
| 90% | E-commerce, web | 70–80% smaller |
| 85% | Blog, social media | 80–85% smaller |
Important: When Not to Convert PNG to JPG
- PNG files with transparency — JPG does not support alpha channels; transparent areas become white
- Screenshots and graphics with sharp text — JPG compression creates artefacts around text edges
- Logos and icons — PNG lossless quality is better for graphics with flat colours
Batch convert multiple PNG files to JPG for free at imgresizr.com — process dozens of files simultaneously without any software.