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Image MIME Reference
AVIF

AV1 Image File Format

image/avif
VS

Fuji Xerox EDMICS-MMR

image/vnd.fujixerox.edmics-mmr
EDMICS-MMR

A complete technical comparison of AV1 Image File Format and Fuji Xerox EDMICS-MMR — covering compression, feature support, browser compatibility, magic bytes, and when to choose each format.

AVIF wins on browser support

Feature Support

Feature AVIF EDMICS-MMR
Transparency (Alpha) Yes ✕ No
Animation Support Yes ✕ No
Progressive Loading ✕ No ✕ No
HDR Support Yes ✕ No
EXIF Metadata Yes ✕ No
ICC Color Profile Yes ✕ No
AV1 Image File Format
image/avif
Extension
.avif
Container HEIF / ISOBMFF
Compression AV1 Lossy / AV1 Lossless
Algorithm
AV1
Color Depth 8-bit, 10-bit, 12-bit
Developed by Alliance for Open Media (AOMedia)
Released 2019
Magic Bytes
XX XX XX XX 66 74 79 70 61 76 69 66
Full AVIF reference →
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 →

Browser Support Comparison

Browser AVIF EDMICS-MMR
Chrome Chrome
✓ 85+
 ✕
Firefox Firefox
✓ 93+
 ✕
Safari Safari
✓ 16+
 ✕
Edge Edge
✓ 121+
 ✕
IE IE (Legacy)
✕ ✕
AVIF

AVIF Strengths

  • Best-in-class compression — typically 20–50% smaller than WebP at equivalent quality
  • Native HDR and wide color gamut (BT.2020) support
  • Supports 8, 10, and 12-bit color depth
Limitations
  • Encoding is highly CPU-intensive — significantly slower than JPEG or WebP
  • Requires Edge 121+ (not supported in earlier Edge versions)
  • Limited support in native desktop image viewers
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

When to choose which format

AVIF
Use AVIF when…
  • Next-Gen Websites
  • HDR Photography
  • High-Quality Web Images
EDMICS-MMR
Use EDMICS-MMR when…
  • Fuji Xerox EDMICS Enterprise Systems
  • Archival of Large-Format Engineering Drawings
  • Legacy Corporate Document Scanning Pipelines

More comparisons

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