Convert PNG to AVIF

PNG is lossless and can be large for some content. AVIF supports transparency and may reduce the size of some images, but the result depends on the source and settings. Compare the rendered output and verify browser support before replacing a web asset.

Source Images Stay Local

Quality85%

Drag & drop your images here

or click to browse, or paste (Ctrl+V)

Supports HEIC, HEIF, WebP, PNG, JPG, AVIF, BMP

How to Convert PNG to AVIF

Drag and drop your PNG files into the box above, or click to browse.

Adjust quality — 80 gives a good balance between size and sharpness.

Download the AVIF files individually or as a ZIP.

Why PNG to AVIF is the biggest size win for web images

PNG stores decoded pixels losslessly, which is useful for editing but can be expensive for delivery. AVIF may reduce some photographic or complex transparent assets, but the result varies and sharp UI artwork can behave differently. Compare the rendered output and file size before replacing a source asset.

When AVIF is not the right target

AVIF is a delivery format, not a working format. If you plan to edit, annotate, or re-export the image, keep the PNG original and only convert to AVIF for the final published version. Also avoid AVIF when your CMS, email client, or design tool does not support it yet.

How to serve AVIF with a fallback

A common approach is the HTML picture element: offer AVIF to browsers that support it, with WebP or PNG fallbacks. This provides format negotiation, but it does not guarantee that AVIF is the smallest output for every source; generate and compare each candidate.

Known limitations

Before converting, note these constraints:

Output behavior follows format capabilities (for example transparency support and lossy/lossless rules).
Final file size depends on source image content and selected quality settings.
If compatibility is critical, choose broadly supported targets first (typically JPG).

Frequently Asked Questions

Does AVIF support transparency like PNG?

Yes. AVIF supports full alpha transparency. Transparent backgrounds, logos, and icons convert without losing their transparent regions.

How much smaller is AVIF compared to PNG?

It depends on the image and quality setting. Photos, flat graphics, and sharp UI assets can produce very different results, and AVIF is not guaranteed to be smaller. Compare the rendered output and file size.

Which browsers support AVIF?

Chrome, Firefox, and Safari (since version 16.4) all support AVIF. Global browser coverage is above 90% in 2026. For older browsers, serve a JPG or WebP fallback.

When should I keep PNG instead of converting to AVIF?

Keep PNG when you need to edit the image further (AVIF re-encoding adds loss), when the target app does not support AVIF, or when pixel-perfect accuracy matters more than file size.

Is AVIF better than WebP for transparent images?

AVIF may produce a smaller transparent image than WebP for some sources and settings, but it is not always the better result. Compare both outputs and verify target support; WebP is often the broader-compatibility fallback.

Why is the output file sometimes larger than the original?

Output can grow when a lossy source is written to lossless PNG, when codec or container overhead dominates a small image, or when the source is already efficiently compressed. Results depend on the image, format, and settings; no fixed saving is guaranteed. PicShift uses MozJPEG, OxiPNG, and libwebp-based workflows, but those implementation choices do not guarantee the smallest possible file. In compress mode, PicShift keeps the original when the generated result is larger. Learn more: https://picshift.app/docs/size-increase-explainer