BMP to AVIF converter
Convert BMP images to AVIF. Fast, free, and private - processed entirely in your browser, up to 30 images at a time.
Drop your BMP images here
or choose up to 30 images from your device
Maximum file size: 20MB per image
Your images stay private
Images are processed directly in your browser and are never uploaded to our servers.
BMP vs. AVIF
BMP stores pixel data with little or no compression, which makes files simple but often very large.
AVIF is a modern compressed format designed for smaller web and storage files.
How to convert BMP to AVIF
- 1
Upload your BMP images
Drag up to 30 files in or choose them from your device.
- 2
Automatic conversion
Each BMP image is decoded and converted to AVIF directly in your browser.
- 3
Review the results
See the generated AVIF file size for each converted image.
- 4
Download one or all
Save a single AVIF file, or download everything together as a ZIP.
When to convert BMP to AVIF
- Reducing large BMP files for websites
- Preparing modern image assets for web delivery
- Saving storage space while keeping a visual copy
- Moving legacy bitmap files into a newer image format
Frequently asked questions
- Yes, completely free with no signup or usage limit.
- No. Conversion happens directly in your browser.
- AVIF offers modern compression and can make large uncompressed BMP files much smaller for web delivery and storage.
- Yes, up to 30 at a time, downloadable individually or as a ZIP.
- Each image can be up to 20MB. Larger files will need to be resized first.
- The AVIF encoder creates a modern compressed copy. The result can use lossy compression, so the visual result and file size depend on the browser encoder.
- Yes. The tool works in any modern mobile browser on iPhone and Android.