FreeCompressor is a free image converter that changes your pictures between the most common web formats without uploading anything. Convert PNG to JPG to shrink screenshots, turn JPG to PNG when you need transparency-ready output, or convert images to WebP and AVIF for the smallest possible web files. Everything runs on your device, so private photos stay private.
How to convert an image
- Open the converter and drop in your images.
- Pick the output format — JPG, PNG, WebP or AVIF — and set the quality.
- Click Convert All; camera EXIF data is removed as part of re-encoding.
- Download the results individually or as a ZIP.
Popular conversions
- PNG to JPG — great for shrinking large screenshots and photos.
- JPG to PNG — a lossless container when you need it.
- Image to WebP — modern format that beats JPG/PNG on size and quality.
- Convert to AVIF — the smallest files, where your browser supports encoding.
Frequently asked questions
Does converting an image upload it?
No — conversion happens locally in your browser, so files never leave your device.
Can I convert PNG to JPG in bulk?
Yes. Add many PNGs, choose JPG, convert the whole batch and download them as a ZIP.
Is WebP or AVIF better?
Both are far smaller than JPG/PNG. AVIF is usually smallest but needs browser encode support, which is auto-detected.