How to convert BMP to AVIF
To convert BMP to AVIF, upload your BMP file, choose AVIF as the output format and press Convert. The finished AVIF file is ready to save to your phone or computer in seconds, free, with no watermark and no sign-up. Your file is deleted from our server about 30 minutes after the conversion.
This free online converter changes BMP images into AVIF files in seconds, with no software to install and no watermark. You can convert several files at once, resize them and choose the quality for formats that support it. Metadata such as location tags is removed from the output for privacy.
Why convert BMP to AVIF?
- Up to 50 percent smaller than JPG
- HDR and wide-colour support
- Alpha transparency and animation
- Works with: Chrome, Firefox, Safari 16+, Edge and recent Android
What to expect from this conversion
- AVIF can be saved lossy or lossless. Quality 100 gives a lossless result where the format supports it, and lower values give smaller files.
BMP vs AVIF
| Property | BMP | AVIF |
|---|---|---|
| Full name | Windows Bitmap | AV1 Image File Format |
| Released | 1986, Microsoft | 2019, Alliance for Open Media |
| Compression | None (uncompressed) | Lossy or lossless |
| Transparency | No | Yes |
| Animation | No | Yes |
| Bit depth | 1 to 32-bit | 8, 10 or 12-bit |
| Shown in browsers | Yes | Yes |
| Best for | legacy Windows software; embedded devices | performance-focused websites; high-quality photos at tiny sizes |
Steps to convert BMP to AVIF
- Drop your BMP image file onto the converter, or click to choose it.
- Check that AVIF is selected as the target and adjust the options if you want.
- Press Convert, then download your new AVIF file when it finishes.
Tips for the best result
- Use quality 80 to 90 for photos: it is visually close to the original at a much smaller size.
- Set a width if the image will be shown on a small screen, which also reduces the file size.
- Choose a background colour before converting transparent images to a format without transparency.
Frequently asked questions
How do I convert BMP to AVIF?
Drop your BMP files on the converter, confirm that AVIF is the target and press Convert. Download each file or the whole batch as a ZIP.
Is the BMP to AVIF converter free?
Yes. It is free with no watermark, no sign-up and no limit on how many images you convert. The site is supported by ads.
Does converting BMP to AVIF reduce quality?
AVIF can be saved lossy or lossless. Quality 100 gives a lossless result where the format supports it, and lower values give smaller files. The quality slider only affects formats that use lossy compression.
Will transparency be kept when I convert BMP to AVIF?
BMP images do not contain transparency, so there is nothing to lose. AVIF supports it if you edit the image later.
Which programs open AVIF files?
AVIF files open in Chrome, Firefox, Safari 16+, Edge and recent Android.
How many images can I convert at once?
Up to 20 images per batch, each up to 60 MB. Files are deleted from the server about 30 minutes after conversion.