Free webp to jpg
EN
Image MIME Reference
DXF

Drawing Exchange Format

image/vnd.dxf
VS

SealedMedia SoftSeal JPEG

image/vnd.sealedmedia.softseal.jpg
SoftSeal-JPEG

A complete technical comparison of Drawing Exchange Format and SealedMedia SoftSeal JPEG — covering compression, feature support, browser compatibility, magic bytes, and when to choose each format.

Equal browser support

Feature Support

Feature DXF SoftSeal-JPEG
Transparency (Alpha) Yes ✕ No
Animation Support ✕ No ✕ No
Progressive Loading ✕ No ✕ No
HDR Support ✕ No ✕ No
EXIF Metadata ✕ No ✕ No
ICC Color Profile ✕ No ✕ No
Drawing Exchange Format
image/vnd.dxf
Extension
.dxf
Container Text / Binary Container
Compression Uncompressed (ASCII) / Uncompressed (Binary)
Algorithm
None
Color Depth Vector (Indexed AutoCAD Colors / True Color)
Developed by Autodesk
Released 1982
Magic Bytes
30 0D 0A 53 45 43 54 49 4F 4E (ASCII) / 41 75 74 6F 43 41 44 20 42 69 6E 61 72 79 20 44 58 46 0D 0A 1A 00 (Binary)
Full DXF reference →
SealedMedia SoftSeal JPEG
image/vnd.sealedmedia.softseal.jpg
Extension
.sjpg.sealed-jpg.sealed-jpeg
Container SealedMedia SoftSeal Wrapper
Compression Encrypted Payload (DCT)
Algorithm
AES EncryptionDiscrete Cosine Transform (Internal JPEG payload)
Color Depth Encrypted Payload (Historically 24-bit RGB)
Developed by SealedMedia (Acquired by Oracle Corporation)
Released Late 1990s
Magic Bytes
Unknown (Proprietary SealedMedia Container)
Full SoftSeal-JPEG reference →

Browser Support Comparison

Browser DXF SoftSeal-JPEG
Chrome Chrome
✕ ✕
Firefox Firefox
✕ ✕
Safari Safari
✕ ✕
Edge Edge
✕ ✕
IE IE (Legacy)
✕ ✕
DXF

DXF Strengths

  • Universally supported by almost every CAD program, 3D modeler, and vector graphics editor in existence
  • ASCII structure is human-readable and can be parsed or generated programmatically with relative ease
  • The de facto standard for sending 2D cutting paths to CNC routers, plasma cutters, and laser engravers
Limitations
  • ASCII DXF files can be enormously large and inefficient compared to binary DWG files
  • The format relies heavily on legacy AutoCAD data structures, making complex 3D entity parsing extremely difficult for third-party developers
  • Lacks native web browser rendering capabilities
SoftSeal-JPEG

SoftSeal-JPEG Strengths

  • Offered persistent document security; if a sensitive photo was emailed outside the company, it remained encrypted and unviewable without server authentication
  • Administrators possessed the ability to remotely revoke viewing rights to a specific image globally at any time
Limitations
  • Completely proprietary and relies on a central authentication server; if the server goes offline or the product is deprecated, the image is permanently inaccessible
  • Zero support in modern operating systems, web browsers, or standard image editing suites without heavy enterprise client installations
  • Oracle effectively discontinued the IRM product line, stranding many legacy sealed documents

When to choose which format

DXF
Use DXF when…
  • Cross-Platform CAD Data Exchange
  • CNC Machining and Laser Cutting Paths
  • PCB Design Outlines
  • Architectural 2D Layouts
SoftSeal-JPEG
Use SoftSeal-JPEG when…
  • Enterprise Information Rights Management (IRM)
  • Secure Distribution of Sensitive Photography
  • Revocable Corporate Document Access

More comparisons

DXF vs ACES → SoftSeal-JPEG vs ACES → DXF vs APNG → SoftSeal-JPEG vs APNG → DXF vs AVCI → SoftSeal-JPEG vs AVCI → DXF vs AVCS → SoftSeal-JPEG vs AVCS → DXF vs AVIF → SoftSeal-JPEG vs AVIF → All comparisons →
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