JPG ↔ PNG Converter
Convert JPG to PNG or PNG to JPG – all in your browser. No upload, privacy-friendly, and great for batches.
- Drag & drop JPG or PNG images
- Automatically detects format and converts
- Download individually or as a .zip
Tip: JPG doesn't support transparency – transparent pixels will be filled with white. PNG is lossless but creates larger files.
Frequently Asked Questions
- Do my images leave my device?
- No – conversion runs in your browser using a canvas; files aren't uploaded.
- What about transparency?
- PNG preserves transparency. JPG doesn't support transparency, so transparent areas are filled with white.
- When should I use PNG vs JPG?
- Use PNG for images needing transparency or lossless quality. Use JPG for photos where smaller file size matters more than perfect quality.
- What quality should I use for JPG?
- 0.8–0.9 is a good balance between quality and file size. PNG ignores quality (always lossless).
- Is there a file size limit?
- Very large images may hit your browser's memory limits. Try processing in smaller batches.