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 TIM images to PGM format. This tool works for both professionals and casual users. Convert your images to PGM in seconds.
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PlayStation Texture (TIM)
The native texture format of the PS1.
The TIM format is the standard image file format for the Sony PlayStation (PSX/PS1) console. It stores textures, sprites, and background images in a way that maps directly to the console's VRAM (Video RAM).
A TIM file contains a header (identifying the bits-per-pixel: 4-bit, 8-bit, 16-bit, or 24-bit) followed by optional CLUT (Color LookUp Table) data and then the pixel data. 4-bit and 8-bit modes use palettes. It includes 'STP' bits (Special Transparency Processing) which handled the PS1's unique semi-transparency modes.
Released in 1994 with the PlayStation SDK. It was the format for Final Fantasy VII backgrounds, Metal Gear Solid textures, and thousands of other games.
Portable Gray Map
The standard uncompressed grayscale format.
PGM (Portable Gray Map) is the grayscale member of the Netpbm format family. It sits between PBM (1-bit black and white) and PPM (full color). It is designed to store grayscale images where each pixel has a value ranging from black to white, with typical depths of 8-bit (0-255) or 16-bit (0-65535).
Like other Netpbm formats, PGM has two sub-formats: P2 (ASCII) and P5 (Binary). The header defines the dimensions and the maximum gray value (Maxval). In P2, pixel values are written as plain text numbers separated by spaces. In P5, they are raw bytes. It is strictly a single-channel format.
Created by Jef Poskanzer in the late 80s to handle scanned photos that were better than 1-bit bitmaps but didn't need full color. It became a staple in computer vision research and Unix tools.
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