Dynapik offers a free online tool to change image types - no need to download anything. It's quick and easy to use. You can change your PSB images to PPM format. This tool works for both professionals and casual users. Convert your images to PPM in seconds.
Photoshop Big
The 'Large Document Format' for managing gigapixel images.
PSB (Photoshop Big) is an extension of the PSD format designed to break the barriers of the 2GB file size limit and 30,000 pixel dimension limit of standard PSD files. It is structurally almost identical to PSD but uses 64-bit offsets inside the file to support massive files up to 4 Exabytes (theoretically) and 300,000 pixels in width/height.
Internally, a PSB file mirrors the block structure of a PSD (Header, Color Mode, Image Resources, Layer and Mask Info, Image Data). The key difference is the bit-width of length integers; PSB uses 8 bytes (64-bit) where PSD uses 4 bytes (32-bit) for describing file offsets and dimensions.
Introduced in Adobe Photoshop CS (v8.0) in 2003 to support the growing needs of astronomical imaging, billboard printing, and HDR photography.
Portable Pixel Map
The standard uncompressed color format of the Netpbm suite.
PPM (Portable Pixel Map) is the color counterpart to PGM and PBM. It is the most widely used format in the Netpbm library for storing full-color RGB images. Like its siblings, it is designed for extreme simplicity and ease of interchange between Unix tools.
PPM files come in two flavors: P3 (ASCII) and P6 (Binary). - **ASCII (P3)**: Pixels are written as readable RGB triplets (e.g., `255 0 0` for red). - **Binary (P6)**: Pixels are raw byte triplets. The header is minimal: Magic Number, Width, Height, Maxval. It does not support alpha channels (use PAM for that) or compression.
Developed by Jef Poskanzer in 1991 to bring color support to the pbmplus (Netpbm) toolkit. It became the lingua franca for Unix graphics utilities.
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