Convert Image Format
Convert between PNG, JPG, WebP and BMP. Custom background color for formats without alpha (JPG/BMP).
- 100% local · no upload
Frequently asked questions
Transparent PNG to JPG = white background?
Yes. JPG has no transparency. The chosen background color (default white) fills transparent pixels.
Does WebP work everywhere?
Modern browsers (Chrome, Firefox, Safari, Edge since 2020) yes. Old PowerPoint / legacy apps may not. For maximum compatibility: JPG.
JPG vs WebP — which to use?
WebP = ~30% smaller for same quality. JPG = universal compatibility. Modern web: WebP. Email attach: JPG.
When is BMP useful?
Almost never. Legacy Windows interop only. BMP files are huge — use PNG instead.
Can I batch convert?
Not in this version. One at a time.