How to convert BMP to AVIF
- 1
Upload your file
Drag and drop a file or click to select one. Keep this page open while the file uploads and converts.
- 2
Convert BMP to AVIF
NexMedia converts BMP to AVIF on its own servers. Processing time depends on the file size and how busy the queue is.
- 3
Download the converted file
When the conversion finishes, the download appears on this page. Your converted file is kept for 2 hours, then deleted.
About BMP
BMP is the device-independent bitmap format of Windows. It usually stores every pixel uncompressed.
Legacy Windows software, simple paint programs and embedded systems.
Without compression a BMP is many times larger than a PNG of the same image.
Convert BMP to AVIF online free, no account required — AVIF is a modern image format based on the AV1 video codec.
Change BMP to AVIF without losing quality — convert BMP to AVIF free in your browser.
Why is my BMP file so enormous compared to the same picture as PNG? The Windows bitmap stores pixels raw with no compression at all, so even a small screenshot can weigh megabytes that PNG stores in kilobytes.
About AVIF
AVIF is an image format based on the AV1 video codec, published by the Alliance for Open Media in 2019. It supports lossy and lossless compression, transparency, HDR and wide colour.
Modern websites, which use it for images smaller than WebP or JPEG at similar quality.
Encoding AVIF is slow, and older software and operating systems may not open it.
Why convert images to AVIF? It is the smallest format today’s browsers accept, often half the size of JPG, with HDR and wide-colour support on top.
What changes when you convert BMP to AVIF
- The BMP picture is re-encoded as AVIF at the default quality settings, so it looks close to the original but is not bit-identical.
Settings you can change
Before you convert BMP to AVIF, you can adjust: Width, Height, Scale fit, Crop position, Never enlarge, Quality, Lossless, Progressive, Remove metadata, Auto-orient from EXIF, Rotate, and Background.
Limits
Each plan sets a maximum file size and a number of conversions per day, and video and audio files also have a maximum length. Guests can convert files up to 100 megabytes and 5 per day; a free account raises this to 500 megabytes and 25 per day; paid plans go up to 100 gigabytes.
Your converted AVIF file is kept for 2 hours, then deleted.
BMP to AVIF: questions and answers
Does converting BMP to AVIF reduce quality?
The BMP picture is re-encoded as AVIF at the default quality settings, so it looks close to the original but is not bit-identical.
What is the difference between BMP and AVIF?
BMP is the Windows bitmap format, usually uncompressed. AVIF is a modern image format based on the AV1 video codec.
Can I change the settings when converting BMP to AVIF?
Before you convert BMP to AVIF, you can adjust: Width, Height, Scale fit, Crop position, Never enlarge, Quality, Lossless, Progressive, Remove metadata, Auto-orient from EXIF, Rotate, and Background.
Do I need an account to convert BMP to AVIF?
No. You can convert BMP to AVIF without an account; signing in raises the file-size and daily limits.
How long is my converted AVIF file kept?
The AVIF file you convert from BMP is kept for 2 hours, then deleted automatically.
Is the AVIF an exact copy of my BMP?
The BMP picture is re-encoded as AVIF at the default quality settings, so it looks close to the original but is not bit-identical.
Will converting BMP to AVIF change my original file?
No. The conversion reads your BMP and writes a new AVIF file, leaving your original BMP file untouched.