Convert BMP to AVIF Online
Massive file sizes (a 1920x1080 image is ~6 MB uncompressed) make it impractical for web or sharing. Converting to AVIF gives you a key advantage: achieves 50% smaller files than jpeg and 20% smaller than webp at equivalent quality, with hdr and wide color gamut support. AVIF is best for next-generation web images with the highest compression efficiency available today.
Why Convert BMP to AVIF?
Massive file sizes (a 1920x1080 image is ~6 MB uncompressed) make it impractical for web or sharing — converting to AVIF overcomes this by providing achieves 50% smaller files than jpeg and 20% smaller than webp at equivalent quality, with hdr and wide color gamut support
AVIF is the right choice when you need to: serving ultra-compressed hero images on modern websites for fastest load times
Gain broader compatibility — AVIF works with Chrome 85+, Firefox 93+, Safari 16.4+, Edge 85+; limited in older image editors
Your BMP files were created for legacy windows application resources and system icon bitmaps, but now you need a format suited to different workflows
BMP vs AVIF — Format Comparison
Windows Bitmap (.bmp)
AV1 Image File Format (.avif)
How to Convert BMP to AVIF
Upload your BMP file
Drag your .bmp file onto the upload area or click to browse. We accept BMP files up to 100 MB.
Choose AVIF as output format
Select .avif (AV1 Image File Format) from the format list. Configure any format-specific settings to match your requirements.
Convert and download
Click Convert and wait for processing. Your AVIF file will be ready to download in seconds. The result is optimized for next-generation web images with the highest compression efficiency available today.
Frequently Asked Questions
Is the BMP to AVIF conversion lossless?
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When both formats support lossless data, the conversion preserves all content. 10/12-bit HDR, wide color gamut (BT.2100), alpha transparency, and animation — all in one format.
How large will my AVIF file be compared to the original BMP?
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BMP files are typically 1 MB – 100 MB, while AVIF files are typically 5 KB – 8 MB. The actual size depends on content complexity and any quality settings you choose.
What software can open the converted AVIF file?
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AVIF is compatible with: Chrome 85+, Firefox 93+, Safari 16.4+, Edge 85+; limited in older image editors.
What is the maximum file size I can convert?
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PureConverter accepts BMP files up to 100 MB. Your files are processed securely and deleted from our servers after conversion.
What's the difference between BMP and AVIF?
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BMP (Windows Bitmap) is best for uncompressed pixel data for windows system graphics and legacy applications requiring raw bitmap access. AVIF (AV1 Image File Format) is best for next-generation web images with the highest compression efficiency available today. Key tradeoff: BMP's advantage is zero processing overhead — raw pixel data can be read directly into memory without a decompression step, while AVIF's advantage is achieves 50% smaller files than jpeg and 20% smaller than webp at equivalent quality, with hdr and wide color gamut support.
Pro Tips for BMP to AVIF Conversion
Review the output AVIF file to ensure all formatting and content transferred correctly from your BMP source
If your BMP file has transparency, make sure AVIF supports it — AVIF supports transparency
AVIF works especially well for: replacing webp where even smaller file sizes are critical for mobile users
Did you know? AVIF is based on the AV1 video codec, which was designed by a consortium specifically to be royalty-free — Netflix, YouTube, and Twitch backed it to avoid paying HEVC license fees.
Ready to Convert?
Upload your BMP file above and get your AVIF in seconds. Free, fast, and secure.