Free Image Format Converter
Convert images between JPG, PNG, WebP, and BMP formats instantly. Adjust quality and download in one click — fully private, no server upload.
Drop images here or click to upload
JPG, PNG, WebP, BMP, GIF · Multiple files OK
Conversion tips
- WebP — best for web: smaller than JPG/PNG with similar quality. Widely supported by modern browsers.
- PNG — lossless, ideal for logos, screenshots, and images with transparency.
- JPG — best for photographs. Use 85–95% quality for a good size/quality balance.
- All conversion happens in your browser — files are never uploaded.
Image Format Comparison
Choose the right format for your use case.
| Format | Best For |
|---|---|
| JPG / JPEG | Photos, social media images |
| PNG | Logos, icons, screenshots, UI elements |
| WebP | All web images — the modern default |
| BMP | Legacy Windows apps, source files |
Frequently Asked Questions
Everything about image format conversion.
What is the difference between JPG, PNG, WebP, and BMP?
JPG: lossy, best for photos, no transparency. PNG: lossless, supports transparency, larger files. WebP: best compression, supports transparency, modern standard. BMP: uncompressed, very large, legacy use only.
When should I convert to WebP?
When optimising for web. WebP is 25–35% smaller than JPG at similar quality and is supported by all modern browsers. Use with a JPG/PNG fallback via the <picture> element.
Does converting an image lose quality?
Converting to lossy formats (JPG, WebP lossy) reduces quality depending on the quality setting. Converting JPG to JPG multiple times compounds quality loss (generation loss). Convert from lossless sources (PNG) for best results.
Can I convert PNG to JPG without losing the background?
JPG doesn't support transparency — transparent areas become white. To keep transparency, use PNG or WebP (which supports alpha transparency).
Are converted images uploaded to a server?
No. Conversion happens entirely in your browser via the Canvas API. Images never leave your device.