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Image MIME Reference
EDMICS-MMR

Fuji Xerox EDMICS-MMR

image/vnd.fujixerox.edmics-mmr
VS

Valve Texture Format

image/vnd.valve.source.texture
VTF

A complete technical comparison of Fuji Xerox EDMICS-MMR and Valve Texture Format — covering compression, feature support, browser compatibility, magic bytes, and when to choose each format.

Equal browser support

Feature Support

Feature EDMICS-MMR VTF
Transparency (Alpha) ✕ No Yes
Animation Support ✕ No Yes
Progressive Loading ✕ No ✕ No
HDR Support ✕ No Yes
EXIF Metadata ✕ No ✕ No
ICC Color Profile ✕ No ✕ No
Fuji Xerox EDMICS-MMR
image/vnd.fujixerox.edmics-mmr
Extension
.mmr.edm
Container Fuji Xerox EDMICS Wrapper
Compression Modified Modified READ (MMR / Group 4 Fax)
Algorithm
MMR (ITU-T T.6 / CCITT Group 4)
Color Depth 1-bit (Monochrome / Bi-level)
Developed by Fuji Xerox Co., Ltd.
Released 1990s
Magic Bytes
Unknown (Proprietary Container wrapped around MMR bitstream)
Full EDMICS-MMR reference →
Valve Texture Format
image/vnd.valve.source.texture
Extension
.vtf
Container Valve Texture Format Header
Compression DXTC (DXT1, DXT3, DXT5) / Uncompressed (BGRA8888, RGB888, etc.)
Algorithm
DXT1-DXT5None
Color Depth 8-bit, 24-bit (RGB), 32-bit (RGBA), 16-bit Floating Point (HDR)
Developed by Valve Corporation
Released 2004
Magic Bytes
56 54 46 00
Full VTF reference →

Browser Support Comparison

Browser EDMICS-MMR VTF
Chrome Chrome
✕ ✕
Firefox Firefox
✕ ✕
Safari Safari
✕ ✕
Edge Edge
✕ ✕
IE IE (Legacy)
✕ ✕
EDMICS-MMR

EDMICS-MMR Strengths

  • Utilized the highly efficient MMR (Group 4) algorithm, which allowed massive, E-size engineering blueprints to be compressed into tiny file sizes suitable for 1990s hard drives and networks
  • Deeply integrated into Fuji Xerox hardware and database systems for seamless scan-to-archive workflows
Limitations
  • Completely proprietary and closed-source, making modern archival extraction and migration extremely difficult
  • No support in modern image processing libraries like ImageMagick, libvips, or standard TIFF viewers without first stripping the proprietary header
  • Strictly limited to 1-bit monochrome images
VTF

VTF Strengths

  • Extremely fast loading within the Source Engine because the block-compressed data goes directly into the GPU's VRAM without CPU decompression overhead
  • Bundles mipmaps, volumetric slices, cubemap faces, and animation frames entirely within a single file
  • Openly documented by the Valve Developer Community, leading to a massive ecosystem of third-party modding tools
Limitations
  • Strictly tied to the Source Engine ecosystem; entirely useless in standard web or print contexts
  • No native support in standard image editors without hunting down and installing specialized plugins
  • Block compression algorithms (DXT) are lossy and can cause visible artifacting, especially on normal maps or smooth gradients

When to choose which format

EDMICS-MMR
Use EDMICS-MMR when…
  • Fuji Xerox EDMICS Enterprise Systems
  • Archival of Large-Format Engineering Drawings
  • Legacy Corporate Document Scanning Pipelines
VTF
Use VTF when…
  • Source Engine Game Textures
  • Custom Maps and Modding (Garry's Mod, CS:GO)
  • Animated In-Game Decals and Sprays
  • Environment Cubemaps (Skyboxes)

More comparisons

EDMICS-MMR vs ACES → VTF vs ACES → EDMICS-MMR vs APNG → VTF vs APNG → EDMICS-MMR vs AVCI → VTF vs AVCI → EDMICS-MMR vs AVCS → VTF vs AVCS → EDMICS-MMR vs AVIF → VTF vs AVIF → All comparisons →
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