Compare Bitmap Image and Tagged Image File Format formats — understand the key differences and when to use each
Bitmap Image
BMP (Bitmap Image File) is an uncompressed raster image format developed by Microsoft. BMP stores pixel data directly without compression, resulting in very large file sizes but perfect image quality with zero artifacts. The format supports 1-bit (monochrome), 4-bit (16 colors), 8-bit (256 colors), 16-bit, 24-bit, and 32-bit color depths. BMP is primarily used in Windows environments and was historically the default format for Windows Paint. While BMP offers the highest quality preservation, its lack of compression makes it impractical for web use or email. Converting BMP to PNG provides identical visual quality with dramatically smaller file sizes. BMP does not support transparency, animation, or metadata. It remains useful for certain technical applications and as an intermediate format in image processing pipelines.
Tagged Image File Format
TIFF (Tagged Image File Format) is a versatile, high-quality image format widely used in professional photography, publishing, printing, and document archiving. Created by Aldus (now Adobe) in 1986, TIFF supports multiple compression methods including LZW (lossless), ZIP, and JPEG, as well as uncompressed storage. TIFF can store images in various color spaces (RGB, CMYK, LAB, grayscale) and bit depths (8-bit, 16-bit, 32-bit float), making it essential for color-critical workflows. The format supports multiple pages/layers in a single file, alpha channels, clipping paths, and extensive metadata (EXIF, IPTC, XMP). TIFF/IT is used for prepress data exchange, and GeoTIFF embeds geospatial data for mapping applications. While TIFF files are larger than JPG or PNG, they're the preferred archival format for preserving maximum image quality and metadata.
| Feature | BMP | TIFF |
|---|---|---|
| Full Name | Bitmap Image | Tagged Image File Format |
| File Extension | .bmp | .tiff |
| Category | image | image |
| Free to Convert | ✓ Yes | ✓ Yes |
| Browser Support | ✓ All Browsers | ✓ All Browsers |
| Convert to Each Other | ✓ Yes | ✓ Yes |
或将文件拖放到此处
最大文件大小：2GB