AVIF to PNG Converter
Convert AVIF (AV1 Image File Format, 2019) to PNG (Portable Network Graphics, 1996) entirely in your browser. Output files are substantially larger — often 1150% bigger because the target format is less efficient for ordinary photographs. Files never leave the tab — there is no upload.
Which formats are supported?
Inputs: PNG, JPEG, WEBP, AVIF, GIF, BMP, ICO, TIFF (Safari) and HEIC/HEIF (via libheif WASM, loaded on demand). Outputs: PNG, JPEG, WEBP, AVIF — each with an optional WASM encoder variant in the dropdown (mozjpeg, oxipng, libwebp, libavif) for tighter compression or consistent output across browsers. Vendor camera RAW formats (CR2/CR3/NEF/ARW/DNG/...), PSD, EPS, TGA, XCF and ICNS are still rejected — those need format-specific decoders we haven't shipped yet.
Both formats default to lossy encoding for photographs. We use the default quality setting (92) which preserves visually-identical detail for most images. Drop the slider lower for hero images on slow connections, raise it for printable masters.
Both formats support a true alpha channel — anti-aliased logos, drop shadows and translucent overlays survive the round-trip unchanged.
PNG is the natural choice for Logos, icons, UI screenshots, text, Anything with sharp edges or flat colour, and Images that need a true alpha channel. It is a poor fit for Photographs (will be much larger than JPG/WEBP/AVIF) and Animated content. Every browser since IE 7; every modern OS.
AVIF: what it is
AVIF wraps a single AV1 intra-frame in a HEIF container. AV1 is a far more sophisticated codec than JPEG or WebP — it has 10× the prediction modes and pays for it in encode time.
Expect AVIF files 40–55% smaller than equivalent JPEG, and 25–35% smaller than equivalent WEBP, at matched perceptual quality.
PNG: what it is
PNG uses DEFLATE (the gzip algorithm) over filtered scanlines. It is lossless: a PNG round-trip never changes a pixel.
Encoding cost lives almost entirely in choosing per-row filters. The oxipng encoder we ship trials more filter combinations than canvas does and typically shrinks files 10–25% further.
At a glance
- Typical size change
- ~1150% larger
- Transparency preserved
- Yes — both formats support alpha channels
- Compression
- AVIF (both) → PNG ( lossless)
- PNG browser support
- Every browser since IE 7; every modern OS.
Frequently asked questions
Is the converted PNG smaller than the original AVIF?
On a typical photograph, substantially larger — often 1150% bigger because the target format is less efficient. Synthetic graphics (logos, screenshots) may behave very differently — try a single file first if size matters.
Will my AVIF be uploaded to convert it?
No. The conversion runs inside the browser tab using WebAssembly. Your file is never sent over the network — drop it, convert it, download it, all on your machine.