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Image MIME Reference
BTIF

Bank Telecommunications Image Format

image/prs.btif
VS

Flexible Image Transport System

image/fits
FITS

A complete technical comparison of Bank Telecommunications Image Format and Flexible Image Transport System — covering compression, feature support, browser compatibility, magic bytes, and when to choose each format.

Equal browser support

Feature Support

Feature BTIF FITS
Transparency (Alpha) ✕ No ✕ No
Animation Support ✕ No ✕ No
Progressive Loading ✕ No ✕ No
HDR Support ✕ No Yes
EXIF Metadata ✕ No ✕ No
ICC Color Profile ✕ No ✕ No
Bank Telecommunications Image Format
image/prs.btif
Extension
.btif.btf
Container Proprietary Check Image Container
Compression Lossy (JPEG-based) / Lossless (TIFF-based)
Algorithm
JPEGTIFF-variant
Color Depth 1-bit (B&W), 8-bit (Grayscale)
Developed by NationsBank (Bank of America) / Ben Simon
Released 1998
Magic Bytes
Unknown (Proprietary container)
Full BTIF reference →
Flexible Image Transport System
image/fits
Extension
.fits.fit.fts
Container FITS
Compression Uncompressed / Tile Compressed (Rice, GZIP)
Algorithm
UncompressedRiceGZIPHcompress
Color Depth 8-bit, 16-bit, 32-bit, 64-bit (Float/Double)
Developed by IAU FITS Working Group / NASA
Released 1981
Magic Bytes
53 49 4D 50 4C 45 20 20 3D 20
Full FITS reference →

Browser Support Comparison

Browser BTIF FITS
Chrome Chrome
✕ ✕
Firefox Firefox
✕ ✕
Safari Safari
✕ ✕
Edge Edge
✕ ✕
IE IE (Legacy)
✕ ✕
BTIF

BTIF Strengths

  • Allowed early digital archiving and web-based transmission of cleared bank checks
  • Encapsulated both image data and ASCII transaction metadata in a single file
Limitations
  • Completely proprietary and obsolete format
  • Lacks native support in modern operating systems and image viewers
  • Requires legacy plugins or specialized bio-format readers (like ImageC) to decode
FITS

FITS Strengths

  • The undisputed global standard for archiving and sharing astronomical data
  • Self-documenting: Headers are written in plain ASCII, ensuring data is readable decades later regardless of software
  • Supports incredibly high dynamic range, N-dimensional arrays, and complex binary tables
Limitations
  • No support in standard consumer software or web browsers
  • Uncompressed raw FITS files from modern telescopes can be excessively large
  • Does not use standard metadata models like EXIF or XMP, requiring specialized parsers

When to choose which format

BTIF
Use BTIF when…
  • Bank Check Archiving (Legacy)
  • Financial Transaction Records
FITS
Use FITS when…
  • Astronomy & Astrophysics
  • Space Telescope Data (Hubble, JWST)
  • Scientific Data Archiving
  • Spectroscopy

More comparisons

BTIF vs ACES → FITS vs ACES → BTIF vs APNG → FITS vs APNG → BTIF vs AVCI → FITS vs AVCI → BTIF vs AVCS → FITS vs AVCS → BTIF vs AVIF → FITS vs AVIF → All comparisons →
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