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Image MIME Reference
Kodak-K25

Kodak K25 Raw Image

image/x-kodak-k25
VS

Truevision TGA (Legacy MIME Alias)

image/x-tga
TGA

A complete technical comparison of Kodak K25 Raw Image and Truevision TGA (Legacy MIME Alias) — covering compression, feature support, browser compatibility, magic bytes, and when to choose each format.

Equal browser support

Feature Support

Feature Kodak-K25 TGA
Transparency (Alpha) ✕ No Yes
Animation Support ✕ No ✕ No
Progressive Loading ✕ No ✕ No
HDR Support Yes ✕ No
EXIF Metadata Yes ✕ No
ICC Color Profile ✕ No ✕ No
Kodak K25 Raw Image
image/x-kodak-k25
Extension
.k25
Container Proprietary Kodak Raw (TIFF-based variant)
Compression Uncompressed / Proprietary Lossless
Algorithm
Proprietary Kodak Compression
Color Depth 10-bit, 12-bit (Per Channel)
Developed by Eastman Kodak Company
Released 1996
Magic Bytes
Varies (Often resembles TIFF header 49 49 2A 00 or requires proprietary parsing)
Full Kodak-K25 reference →
Truevision TGA (Legacy MIME Alias)
image/x-tga
Extension
.tga.icb.vda.vst
Container Truevision TGA Footer/Header
Compression Uncompressed / Run-Length Encoding (RLE)
Algorithm
NoneRLE
Color Depth 8-bit (Grayscale or Indexed), 16-bit (High Color), 24-bit (True Color), 32-bit (True Color with Alpha Channel)
Developed by Truevision Inc.
Released 1984
Magic Bytes
54 52 55 45 56 49 53 49 4F 4E 2D 58 46 49 4C 45 2E 00 (At the end of the file)
Full TGA reference →

Browser Support Comparison

Browser Kodak-K25 TGA
Chrome Chrome
✕ ✕
Firefox Firefox
✕ ✕
Safari Safari
✕ ✕
Edge Edge
✕ ✕
IE IE (Legacy)
✕ ✕
Kodak-K25

Kodak-K25 Strengths

  • Historically significant format tied to the first digital camera to adopt CompactFlash memory
  • Preserves original raw sensor data, allowing modern demosaicing algorithms (via LibRaw) to extract much better image quality than 1996-era software could
Limitations
  • Completely obsolete and deeply proprietary, lacking modern raw format features found in DNG
  • Cannot be natively viewed in web browsers or standard operating system image viewers without specialized decoders
  • Subject to misidentification by automated MIME detection libraries due to structural similarities with standard TIFFs
TGA

TGA Strengths

  • Incredibly simple byte layout allows developers to write custom loaders and exporters in a few dozen lines of code, bypassing the need for heavy external libraries
  • Native support for 8-bit alpha channels ensures flawless transparency masking for real-time 3D rendering
  • Fast, predictable RLE decoding requires almost no CPU overhead compared to DEFLATE (PNG) or DCT (JPEG)
Limitations
  • RLE compression is relatively weak by modern standards, resulting in large file sizes
  • Lacks a standard magic byte header at the beginning of the file, making file-sniffing unreliable for older v1.0 files
  • Zero support in web browsers; must be converted to PNG or WebP for web delivery

When to choose which format

Kodak-K25
Use Kodak-K25 when…
  • Vintage Digital Photography Archival
  • Kodak DC25 Camera Restorations
  • Historical Imaging Research
TGA
Use TGA when…
  • Video Game 3D Textures and Materials
  • 3D Rendering and Animation Sequences
  • Legacy Video Production Workflows

More comparisons

Kodak-K25 vs ACES → TGA vs ACES → Kodak-K25 vs APNG → TGA vs APNG → Kodak-K25 vs AVCI → TGA vs AVCI → Kodak-K25 vs AVCS → TGA vs AVCS → Kodak-K25 vs AVIF → TGA vs AVIF → All comparisons →
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