JPG to PNG Converter
Convert JPG images to PNG format instantly in your browser β no upload, fully private.
JPG vs. PNG: when to use each format
JPG (JPEG) and PNG are the two most common image formats on the web, and they serve different purposes. Choosing the wrong format can result in visibly degraded images, unnecessarily large file sizes, or transparency issues that break your design. Understanding the fundamental difference helps you pick the right format every time.
Format comparison
| Feature | JPG | PNG |
|---|---|---|
| Compression | Lossy (quality degrades with compression) | Lossless (no quality loss at any compression) |
| Transparency | β Not supported | β Full alpha channel (0β255 opacity) |
| Best for | Photographs, complex scenes with gradients | Logos, icons, screenshots, text, UI elements |
| File size | Smaller for photographs (5β20Γ smaller) | Larger for photographs; smaller for simple graphics |
| Re-saving | Quality degrades each time you save | No degradation from multiple saves |
| Colour depth | 16.7M colours (24-bit RGB) | Up to 16.7M colours + 8-bit alpha |
| Browser support | 100% β universal | 100% β universal |
Why convert JPG to PNG?
Modern alternatives: WebP and AVIF
If your goal is smaller file sizes for web delivery, consider WebP or AVIF instead. WebP offers 25β35% smaller files than JPG at equivalent quality, and supports transparency (unlike JPG). AVIF is even more efficient but has slightly less browser support. Both formats are now supported by all modern browsers and should be preferred for new web projects over both JPG and PNG.
Format comparison for a typical photo (1200Γ800px):
JPG (quality 85): ~180 KB
PNG: ~600 KB (lossless)
WebP: ~130 KB (equivalent quality)
AVIF: ~90 KB (equivalent quality)
Use PNG when you need: transparency, lossless editing, screenshots
Use JPG when you need: small photos for web, universal compatibility
Use WebP/AVIF when you need: best compression + transparency for webFrequently asked questions
Does converting JPG to PNG improve quality?
It cannot add back detail lost to JPG compression, but PNG stores the image losslessly from that point on, avoiding further quality loss on re-saving.
Is my image uploaded to a server?
No. The conversion happens entirely in your browser, so your image never leaves your device.
When should I use PNG instead of JPG?
Use PNG for graphics, logos, screenshots and anything needing sharp edges or transparency. JPG is better for photographs where smaller file size matters.
Does PNG support transparency?
Yes. PNG supports a transparent background, which JPG does not β one of the main reasons to convert to PNG.
Upload a JPG or JPEG file and it is converted to PNG using your browser's canvas API. PNG supports transparency and lossless compression. Use PNG for logos, icons and graphics. Use JPG for photos (smaller file size).