How do I convert BMP to AVIF?

Upload your BMP file above. It is converted to AVIF automatically (change the output format or quality in the Settings tab if you need to), then click Download. There is nothing to install.

Does converting BMP to AVIF lose quality?

AVIF is lossy by default, so some fine detail is discarded to make the file smaller. Raise the quality or switch on lossless in Settings for a closer copy.

BMP or AVIF: which should I use?

Use BMP for older Windows programs, embedded devices and tools that need raw pixels. Use AVIF for the smallest high-quality images for websites and apps. Keep in mind the main drawback of AVIF: it is slow to create and many editing apps and older devices can’t open it.

BMP stores pixels with no compression at all. Files are large, but very old or simple software that can’t read modern formats can usually read a BMP.

Is the BMP to AVIF converter free?

Yes. Convert, preview and download a single result without creating an account. Premium adds batch conversion (many files into one ZIP) and larger uploads.

Convert BMP to AVIF — Smallest High-Quality Images

Convert BMP to AVIF online for very small, high-quality web images. No software to install. Preview one free or batch-convert with Premium.

Drop your BMP file or click to browse

Why convert BMP to AVIF?

AVIF files are usually smaller than BMP for the same picture, so pages load faster and uploads finish sooner.
AVIF is made for the smallest high-quality images for websites and apps.

What to expect when converting BMP to AVIF

AVIF uses lossy compression by default; raise the quality or switch on lossless in Settings for a closer copy.
Your original BMP file isn’t changed: you download a new AVIF copy.

BMP vs AVIF

功能	BMP	AVIF
全名	Windows Bitmap	AV1 Image File Format
Origin	Created by Microsoft for Windows	Released by the Alliance for Open Media in 2019
压缩	Uncompressed	Lossy or lossless
Transparency	No (in the 24-bit BMPs most apps read)	Yes — smooth, partial transparency
动画	否	是
颜色	16.7 million colours (24-bit)	8, 10 or 12 bits per channel, including HDR
Where it opens	Windows and macOS apps, older software and browsers	Current Chrome, Edge, Firefox and Safari 16+; fewer editing apps
最适合	older Windows programs, embedded devices and tools that need raw pixels	the smallest high-quality images for websites and apps
Main drawback	very large files and no transparency	it is slow to create and many editing apps and older devices can’t open it

In short: choose BMP for older Windows programs, embedded devices and tools that need raw pixels; choose AVIF for the smallest high-quality images for websites and apps.

Frequently asked questions

How do I convert BMP to AVIF?: Upload your BMP file above. It is converted to AVIF automatically (change the output format or quality in the Settings tab if you need to), then click Download. There is nothing to install.
Does converting BMP to AVIF lose quality?: AVIF is lossy by default, so some fine detail is discarded to make the file smaller. Raise the quality or switch on lossless in Settings for a closer copy.
BMP or AVIF: which should I use?: Use BMP for older Windows programs, embedded devices and tools that need raw pixels. Use AVIF for the smallest high-quality images for websites and apps. Keep in mind the main drawback of AVIF: it is slow to create and many editing apps and older devices can’t open it.
What is a BMP file?: BMP stores pixels with no compression at all. Files are large, but very old or simple software that can’t read modern formats can usually read a BMP.
Is the BMP to AVIF converter free?: Yes. Convert, preview and download a single result without creating an account. Premium adds batch conversion (many files into one ZIP) and larger uploads.

使用 BMP to AVIF 可以做什么

在开始之前查看主要功能。

Convert BMP files to AVIF online
Choose AVIF quality or switch to lossless
Switch to any other output format in Settings
Batch-convert many BMP files into one ZIP
Preview the result before you download

使用这个工具

设置参考

BMP to AVIF 的可用控件。

设置

输出格式下拉框: Chooses the file type you download. The page opens on its own output format; switch to any other format before converting.选项: JPGPNGWebPAVIFGIFTIFFBMPICOPDF
质量滑块范围: 20–100 · 默认: 90: For JPG, WebP, AVIF and image-to-PDF output: higher keeps more detail but makes a bigger file; 60–80 suits most photos. Documents (Publisher, XPS, EPS…) become PDFs with every page and sharp text, with no quality setting.
无损模式开／关: For WebP and AVIF output: keeps every pixel exactly (best for logos, graphics and transparency) at the cost of a larger file.
背景填充取色器: For JPG, BMP and image-to-PDF output, which can’t store transparency: the colour that fills transparent areas (white by default).