Free online Sun Raster→AVIF converter. Fast, private, no sign-up.
If something is asking you for a AVIF file and all you have is a Sun Raster, this page is the fix. Drop in your Sun Raster file (a .ras) and download a ready-to-use AVIF file (a .avif) — no software to install, no account to create, and no watermark on the output.
Sun Raster is an image format. Converting to or from it lets you use the same picture in apps and on platforms that expect a different format.
AVIF, based on the AV1 codec, delivers the smallest files of the mainstream formats at a given quality, with transparency and HDR — at the cost of slower encoding and slightly less universal support than WebP.
The usual reason to convert Sun Raster to AVIF is file size or quality: AVIF fits the job better, whether that means a smaller download, a cleaner edit, or broader support. Under the hood the conversion runs on libvips and ImageMagick — the same libraries that power image pipelines across the web — so colour, transparency and metadata are handled correctly wherever the target format supports them.
Unlike Sun Raster, AVIF supports transparency, so it's a good target if you later need a cut-out.
You might be optimising images for a faster-loading page, exporting for a specific app or marketplace, or just making sure a colleague on a different device can open what you send.
Privacy is the default here. Your Sun Raster file is uploaded over an encrypted connection, converted, downloaded the moment it's ready, and then deleted automatically a short time afterwards. We never keep your files, never build a library of your content, and never make you sign up to download the result.
Ready? Use the converter above, or explore related conversions: turn Sun Raster into a different format, or convert another format into AVIF. Everything on Convert Me Pls is free, unlimited and watermark-free.
Yes. Convert Me Pls is completely free with no sign-up, no file-count limits and no watermarks added to your output.
Your files are uploaded over an encrypted connection, converted, and then deleted automatically a short time afterwards. We never keep your files and never build a library of your content.
We use the best available encoders (libvips, ImageMagick and ffmpeg) at high-quality settings for the cleanest possible result.
Conversions run on our servers and support large files comfortably; very large media is processed in a streaming pipeline.