How do I convert AVIF to BMP?

Upload your AVIF file above. It is converted to BMP 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 AVIF to BMP lose quality?

不会增加新的损失：BMP 会按原样完整保存图片。之前 AVIF 压缩所去除的细节无法恢复。

Will the BMP keep the transparent background?

不会。BMP 无法存储透明度，因此透明区域会用您在“设置”中选择的背景色填充（默认为白色）。

什么是 AVIF 文件？

AVIF compresses still images with the AV1 video codec. It usually produces smaller files than JPG and WebP at the same visual quality and supports HDR and transparency.

Is the AVIF to BMP 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 AVIF to BMP — Uncompressed Bitmaps

Convert AVIF to BMP online for an uncompressed bitmap that older apps can read. No software to install. Preview one free or batch-convert with Premium.

Drop your AVIF file or click to browse

Why convert AVIF to BMP?

BMP is lossless, so the converted image loses no further detail when you edit and save it again.
BMP is made for older Windows programs, embedded devices and tools that need raw pixels.

What to expect when converting AVIF to BMP

BMP 无法存储透明度，因此透明区域会用您在“设置”中选择的背景色填充（默认为白色）。
转换无法找回 AVIF 压缩已去除的细节：BMP 是图像现状的精确副本，文件通常更大。

AVIF 与 BMP 对比

功能	AVIF	BMP
全名	AV1 图像文件格式	Windows 位图
来源	Released by the Alliance for Open Media in 2019	Created by Microsoft for Windows
压缩	有损或无损	未压缩
透明度	Yes — smooth, partial transparency	No (in the 24-bit BMPs most apps read)
动画	是	否
颜色	8, 10 or 12 bits per channel, including HDR	1670 万种颜色（24 位）
可用什么打开	Current Chrome, Edge, Firefox and Safari 16+; fewer editing apps	Windows and macOS apps, older software and browsers
最适合	the smallest high-quality images for websites and apps	older Windows programs, embedded devices and tools that need raw pixels
主要缺点	它的生成速度慢，许多编辑应用和旧设备都打不开它	very large files and no transparency

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

Frequently asked questions

How do I convert AVIF to BMP?: Upload your AVIF file above. It is converted to BMP 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 AVIF to BMP lose quality?: 不会增加新的损失：BMP 会按原样完整保存图片。之前 AVIF 压缩所去除的细节无法恢复。
Will the BMP keep the transparent background?: 不会。BMP 无法存储透明度，因此透明区域会用您在“设置”中选择的背景色填充（默认为白色）。
AVIF or BMP: which should I use?: Use AVIF for the smallest high-quality images for websites and apps. Use BMP for older Windows programs, embedded devices and tools that need raw pixels. Keep in mind the main drawback of BMP: very large files and no transparency.
什么是 AVIF 文件？: AVIF compresses still images with the AV1 video codec. It usually produces smaller files than JPG and WebP at the same visual quality and supports HDR and transparency.
Is the AVIF to BMP 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 AVIF 转 BMP 可以做什么

在开始之前查看主要功能。

Convert AVIF files to BMP online
用您选择的背景色填充透明区域
Switch to any other output format in Settings
Batch-convert many AVIF files into one ZIP
Preview the result before you download

使用这个工具

设置参考

AVIF 转 BMP 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: 适用于无法存储透明度的 JPG、BMP 和图片转 PDF 输出：用于填充透明区域的颜色（默认为白色）。