Compare Adobe Photoshop Document and Bitmap Image formats — understand the key differences and when to use each
Adobe Photoshop Document
PSD (Photoshop Document) is Adobe Photoshop's native file format. PSD preserves layers, masks, blend modes, adjustment layers, smart objects, text layers, paths, and all editing capabilities. It supports RGB, CMYK, LAB, and other color modes at up to 32-bit depth. PSD is the standard working format for graphic designers, photographers, and digital artists. For sharing, PSD files should be converted to PNG, JPG, or PDF.
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.
| Feature | PSD | BMP |
|---|---|---|
| Full Name | Adobe Photoshop Document | Bitmap Image |
| File Extension | .psd | .bmp |
| Category | image | image |
| Free to Convert | ✓ Yes | ✓ Yes |
| Browser Support | ✓ All Browsers | ✓ All Browsers |
| Convert to Each Other | ✓ Yes | ✓ Yes |
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