PNG → AVIF
Convert PNG to AVIF – locally in your browser
Why PNG → AVIF?
PNG files with transparency become significantly smaller as AVIF – with the same visual quality and including alpha channel support. Perfect for web graphics with transparency.
Frequently Asked Questions
What is an AVIF file?
AVIF (AV1 Image File Format) is a modern image format based on the AV1 codec. It offers superior compression with support for transparency and HDR.
Are my images safe?
Yes, 100%. The conversion happens completely locally in your browser – your images are never uploaded to a server.
Can I convert multiple files at once?
Yes, you can upload and convert as many PNG files as you want at the same time.
Is the conversion free?
Yes, wandlio.de is completely free. No registration, no limits, no ads.
About AVIF
AVIF (AV1 Image File Format) is based on the AV1 video codec from the Alliance for Open Media and was standardized in 2019. It offers the best compression of any current image format - typically 50 percent smaller than JPEG at the same quality - and supports HDR with PQ and HLG transfer functions, transparency, and animation. AVIF uses intra coding from the AV1 codec with block partitioning and filters optimized for still images. The format is supported by Chrome, Firefox, and Edge; Safari since version 16 (2022). AVIF is considered the most promising candidate for the next standard web image format. The disadvantage is the still longer encoding time compared to JPEG and WebP, which matters for large volumes of images. AVIF is patent-free and royalty-free, making it free from patent restrictions unlike HEIC/HEIF. AVIF with 10-bit color depth enables extended color gamut and higher dynamic range for professional photography.
About PNG
PNG (Portable Network Graphics) was released in 1996 as an open standard and developed as a patent-free alternative to GIF after Unisys demanded licensing fees for the LZW algorithm used in GIF in 1994. PNG uses lossless compression based on the Deflate algorithm and supports up to 16 bits per channel as well as full-color transparency through a dedicated alpha channel. The format is particularly suited for graphics with sharp edges, text, logos, and screenshots – anywhere JPEG would produce artifacts through its lossy compression. PNG does not support animation; this gap is filled by the unofficial APNG format, which is supported by most browsers. The interlaced variant (Adam7) enables progressive loading where a coarse preview becomes visible even with minimal data transferred. PNG is the de facto standard for lossless web graphics and is supported by all browsers, operating systems, and image editing programs. For photography, however, PNG is inefficient since file sizes are significantly larger compared to JPEG or WebP, which is why PNG is primarily used for graphics and screenshots.
Why convert PNG → AVIF?
PNG is a lossless raster format with full alpha transparency support, a web standard since 1996. It's excellent for screenshots, diagrams, and graphics with text elements. The downside: PNG files are significantly larger than modern compressed formats — often 3-5x larger than WebP at equivalent visual quality. Converting to AVIF makes sense when you need to reduce file size for web or mobile use, require a format with lossy compression for photos, or want to use images in a system with limited PNG support. Switching to AVIF noticeably reduces load times for web use.