WebP to AVIF Converter
WebP to AVIF: one more step of compression for a website. First frame or all frames in a ZIP, adjustable quality. Files are not uploaded to a server.
AVIF gives the lightest file at good quality but takes longer to encode. The codec is downloaded the first time.
WebP becomes AVIF, a next-generation format with even stronger compression. If a site already uses WebP, moving to AVIF can noticeably cut the weight of its pictures. For an animated WebP, the first frame is taken or all frames are saved in a ZIP.
WebP is a Google format for websites. It compresses with or without loss, supports transparency and animation, and is usually noticeably lighter than JPG and PNG. Most modern browsers open it, but some programs and older devices do not.
AVIF is a next-generation format: at the same quality the file is noticeably lighter than JPG and WebP, and transparency is supported. The price is encoding time and compatibility: modern browsers open AVIF, but not all programs do.
For AVIF you set the quality from 1 to 100 and the encoding speed: the slower it is, the slightly lighter the file. A small codec is downloaded on first use. Transparency is kept by default, but you can fill it with a color. WebP can be animated but AVIF cannot store animation: the first frame is taken or all frames are saved as separate pictures in one ZIP. The size in pixels can stay as it is or be changed by width, by height or in percent. Results download one by one or all at once as a ZIP, with random or original names.
Converting WebP to AVIF happens in your browser: files are not uploaded to a server, so it is fast and safe. You can drag several files in, pick them in a file window or paste from the clipboard with Ctrl+V. To encode AVIF a small codec is downloaded on first use, so an internet connection is needed, but the picture itself is never sent anywhere.