BMP 转 WEBP 在线转换器

只需 3 步，轻松将您的 BMP 文件转换为 WEBP 格式。

WEBP⌄

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⚙ 可选设置

Resize

Color Filter

DPI

dpi

Crop (px)

BMP vs WEBP：完整格式指南

BMP

None

压缩

WEBP

Lossy+Lossless

BMP

Only in 32-bit BMP via BITMAPV4/V5HEADER alpha channel — inconsistently supported by applications

透明度

WEBP

Full 8-bit alpha channel — same capability as PNG, with better compression efficiency

BMP

Not supported

动画

WEBP

Supported — animated WebP stores multiple frames with per-frame timing data, offering vastly better quality and smaller files than animated GIF

BMP

1-bit monochrome to 32-bit RGBA — most common use is 24-bit (16.7 million colors)

色彩深度

WEBP

24-bit RGB + 8-bit alpha — 16.7 million colors with full alpha transparency

BMP

3 MB – 25 MB per image — a 1920×1080 24-bit BMP is approximately 5.9 MB

文件大小

WEBP

25–35% smaller than an equivalent-quality JPEG or PNG — typically 30–80 KB for standard web images

BMP

Technically supported by most browsers but virtually never used on the web due to enormous file sizes

浏览器支持

WEBP

Chrome 23+, Firefox 65+, Edge 18+, Safari 14+, Opera 12+. Not supported in Internet Explorer or Safari prior to iOS/macOS in 2020.

BMP

Legacy Windows apps

最适合

WEBP

Web images, modern apps

常见使用场景：BMP → WEBP

🌐 Modernizing legacy image archives⚡ Web performance optimization🛒 E-commerce image migration

⚠️Excellent for batch-modernizing old BMP image archives for web use. The file size reduction compared to original BMP is dramatic — typically 95–99% smaller.

Format

BMP

BMP (Device-Independent Bitmap) was introduced by Microsoft with the Windows 3.0 SDK in 1990 as the native raster format for Windows. It stores pixel data with zero compression, ensuring perfect repro…

优点

+Zero compression artifacts — the highest possible fidelity for raw storage

+Simple, well-documented format trivial to read/write programmatically

+Universal support across all Windows software and development tools

+Direct pixel data access with no decoding overhead

局限性

−Extremely large files — a 1080p image is ~6 MB vs ~300 KB as JPG

−No practical web use — impractically large for any internet delivery

−Limited support outside Windows ecosystem

−No meaningful advantages over PNG for any modern use case

Legacy Windows applications that exclusively require BMP formatAutomated Windows image processing pipelines as an intermediate formatSystem resource files (wallpaper, specific application bitmaps)When absolute raw pixel fidelity is needed and file size is irrelevant

Format

WEBP

Google developed WebP and announced it in 2010 using technology from the VP8 video codec. Initial adoption was Chrome-only, but Firefox added support in 2019 and Apple's Safari 14 followed in 2020 — f…

优点

+25–34% smaller than JPEG/PNG at equal quality — direct page load improvement

+Both lossy and lossless compression modes in a single format

+Full alpha transparency like PNG at significantly smaller file sizes

+Animated WebP replaces GIF with full-color quality and dramatically smaller files

局限性

−Not supported in Internet Explorer or Safari before iOS 14 / macOS Big Sur

−Print shops, Outlook, and Office apps don't accept WebP

−Limited native support in professional desktop imaging software

−Not practical for offline print workflows requiring Photoshop or Lightroom native support

Websites targeting modern browsers (Chrome, Firefox, Edge, Safari 14+)E-commerce and high-traffic sites where image performance impacts conversionsMobile-first apps where bandwidth and load time are criticalReplacing animated GIFs with higher-quality, much smaller animated alternatives

BMP 转 WEBP：您需要了解的

WebP提供了BMP所没有的一切：现代压缩（有损和无损）、透明度支持和大幅减小的文件大小。将BMP转换为WebP可以将6 MB的未压缩位图减小到不足200 KB，且没有可见的质量损失。WebP现在在所有主流浏览器中都受到支持。

为什么将 BMP 转换为 WEBP？

📉

90-97%尺寸缩减

WebP将BMP文件压缩90-97%，将千兆字节的位图转换为可管理的网络资产。

网络就绪格式

浏览器原生显示WebP。BMP在任何网络浏览器中都无需插件而无法渲染。

🌐

🎨

无损或有损

选择无损WebP保留BMP的精确像素数据，或选择有损以获得最大压缩。

即时加载

微小的WebP文件在网络应用中几乎可以即时加载，大大改善用户体验。

⚡

BMP

文件扩展名.bmp
描述BMP (Bitmap) stores uncompressed bitmap digital images independently of the display device. Large file sizes but no quality loss.
相关程序Microsoft Paint, Adobe Photoshop, GIMP, MS Photo Editor
开发者Microsoft
MIME 类型image/bmp

WEBP

文件扩展名.webp
描述WebP provides superior lossless and lossy compression for images on the web. WebP images are typically 25-34% smaller than comparable JPEG or PNG files.
相关程序Google Chrome, Firefox, Adobe Photoshop (with plugin), GIMP
开发者Google
MIME 类型image/webp