Compare Adobe Photoshop Document and JPEG 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.
JPEG Image
JPEG (Joint Photographic Experts Group) is the technical name for the JPG image format, standardized as ISO/IEC 10918. JPEG uses a lossy compression algorithm based on the Discrete Cosine Transform (DCT) to analyze and compress image data in 8×8 pixel blocks. This makes it extremely efficient for photographs and natural images with smooth color transitions. JPEG supports different color spaces including sRGB, Adobe RGB, and CMYK, and can embed EXIF metadata with camera settings, GPS coordinates, and timestamps. The format supports progressive encoding, where the image loads in increasing detail, improving perceived performance on slow connections. While JPEG doesn't support transparency, its universal compatibility and excellent compression make it the backbone of digital photography and web imagery.
| Feature | PSD | JPEG |
|---|---|---|
| Full Name | Adobe Photoshop Document | JPEG Image |
| File Extension | .psd | .jpeg |
| Category | image | image |
| Free to Convert | ✓ Yes | ✓ Yes |
| Browser Support | ✓ All Browsers | ✓ All Browsers |
| Convert to Each Other | ✓ Yes | ✓ Yes |
またはファイルをここにドラッグ＆ドロップ
最大ファイルサイズ：2GB