To convert BMP to AVIF, select or drop your .bmp picture above, check that AVIF is chosen as the output, and click Convert. Files up to 200 MB are converted right in your browser, so they never leave your device.
What is a BMP file?
BMP – Bitmap image. BMP is the plain bitmap format of Windows. It usually stores every pixel without compression, so files are large, but every program can read them.
BMP Converter →What is an AVIF file?
AVIF – AVIF image. AVIF is a newer picture format based on the AV1 video codec. It gives smaller files than JPG or WebP at the same quality and supports transparency, but it is slower to create and older software cannot open it.
AVIF Converter →How to convert BMP to AVIF
- Click Select File, or drop your .bmp files anywhere on this page. You can add several at once.
- Check that AVIF is chosen as the output format. On this page it is picked for you.
- Click Convert. When a file has to go to our server, the button says Upload and convert instead.
- Click Download next to each file when it's done.
BMP vs AVIF: how they compare
| BMP | AVIF | |
|---|---|---|
| Compression | Usually none | Lossy or lossless (AV1) |
| Transparency | Rarely | Yes |
| Animation | No | Yes |
| Created by | Microsoft | Alliance for Open Media, 2019 |
| Best for | Simple pictures for old software | The smallest photos on modern websites |
Good to know
- Choose a quality in Options: lower numbers make a smaller AVIF with less detail.
- Tick Remove metadata in Options to leave out information stored in the picture, such as the camera and the place.
Frequently asked questions
Is converting BMP to AVIF free?
Yes. Everyone gets 25 free credits a day, with no account needed. Conversions on our server use one credit per started minute of work, so most cost a single credit. Credits reset at midnight UTC.
Are my BMP pictures uploaded anywhere?
Pictures up to 200 MB never leave your device: ConvertKitty converts them inside your browser, with ImageMagick compiled to WebAssembly. Only larger files, or formats your browser cannot handle (camera RAW, PostScript, XPS, LibreOffice and Publisher files, and video or audio), are sent to our server, over an encrypted connection, and deleted 72 hours after the conversion. The button says "Upload and convert" whenever that happens.
How large can the BMP file be?
Files up to 200 MB are converted right in your browser. Larger files, up to 1 GB, are converted on our server.
Can I change the size or quality of the AVIF?
Yes. Click Options next to the file to set a width and height, choose a quality, remove metadata and more. Only the settings that make sense for BMP to AVIF are shown.
Can I convert several BMP files at once?
Yes. Add as many files as you like; they are converted one after another, and each one gets its own Download button.
Convert BMP to other formats
- BMP Converter
- BMP to EPS Converter
- BMP to GIF Converter
- BMP to ICO Converter
- BMP to JPG Converter
- BMP to PDF Converter
- BMP to PNG Converter
- BMP to PS Converter
- BMP to PSD Converter
- BMP to SVG Converter
- BMP to TIFF Converter
- BMP to WEBP Converter
Convert other pictures to AVIF
- Convert to AVIF
- HEIC to AVIF Converter
- PNG to AVIF Converter
- JPG to AVIF Converter
- WEBP to AVIF Converter
- TIFF to AVIF Converter
- PSD to AVIF Converter
- GIF to AVIF Converter
- CR2 to AVIF Converter
- NEF to AVIF Converter
- EPS to AVIF Converter
All image formats
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