Free online BMP→AVIF converter. Fast, private, no sign-up.
Converting BMP to AVIF is one of those small tasks that should be instant and free — and here it is. Drop in your BMP file (a .bmp) and download a ready-to-use AVIF file (a .avif) — no software to install, no account to create, and no watermark on the output.
BMP is an uncompressed Windows bitmap — large files because nothing is compressed, but dead simple and universally readable on Windows.
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 BMP 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.
Because BMP is uncompressed, the AVIF you get back will typically be dramatically smaller. Unlike BMP, AVIF supports transparency, so it's a good target if you later need a cut-out.
It comes up when publishing online, submitting to a service with strict format rules, or archiving a collection in a single consistent format.
Privacy is the default here. Your BMP 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 BMP 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.