Convert PNG images to AVIF and keep transparency at a fraction of the size
Drag and drop your files here
or browse your device
Files are deleted automatically. Downloads expire after 10 minutes.
PNG is loved for two things: perfect lossless quality and a proper transparent background. It is also notorious for the file sizes those qualities cost, particularly on detailed images. AVIF offers a way out that JPG never could, because AVIF keeps an alpha channel. That means you can take a transparent PNG, the kind JPG would ruin by painting white behind it, and compress it dramatically while the transparency stays exactly where it was.
The converter re-encodes each PNG as AVIF at your chosen quality, defaulting to 55. On photographic PNGs the size reduction is enormous; on flat graphics and icons it is still worthwhile, and the crisp edges hold up well. If your source images are screenshots or UI assets where every pixel must stay razor-sharp, lean toward a higher quality setting and check the result, since aggressive compression can soften fine text.
The conversion pays off most on the images a site cannot do without but that quietly bloat it. A full-width hero banner saved as a transparent PNG can easily be several megabytes; as an AVIF it might be a few hundred kilobytes with the transparency untouched. The same applies to a folder of product cut-outs, decorative overlays, or the assets bundled into an app, where the totals add up fast. For the smallest, most detail-critical interface icons it is still worth comparing against a PNG or WebP copy, because at tiny sizes the difference in bytes is trivial while the risk of a softened edge is not, but for everything larger AVIF is hard to beat.
AVIF gives the smallest files and is the right modern choice for the web, where every current browser renders it. When you need wider compatibility with older software, PNG to WebP keeps transparency too while being supported almost everywhere, and plain PNG to JPG remains the most universal option for images that do not need a clear background.
To reverse it, AVIF to PNG restores a lossless PNG whenever you need one back in an editable, universally supported format.
Drop in one image or a batch of them.
55 suits most images. Nudge it up for screenshots and fine text, down for the smallest possible files.
A single PNG returns as one AVIF; a batch arrives as a ZIP.
Yes, and that is the headline feature here. AVIF supports a full alpha channel, so transparent and semi-transparent areas survive the conversion intact. This is what lets you compress a transparent image without the white background that JPG would force on it.
A great deal, especially on photographic PNGs, where AVIF can cut the file to a small fraction of the original. Flat graphics and icons save less in absolute terms but still come out smaller while staying sharp.
At sensible quality settings, yes. If an image is dense with tiny text or hairline detail, raise the quality a little above the default and check the output, since heavy compression can blur the finest edges.
Anywhere a modern browser is involved, which covers today's web comfortably. For older desktop applications or print, support is less certain, so keep a PNG or WebP copy for those situations.
At the default quality it is visually almost identical, though AVIF is a lossy format so it is not bit-for-bit the same. On flat graphics keep an eye on the finest edges; on photographs and detailed artwork the difference is invisible at normal viewing sizes.