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Image MIME Reference
EMF

Windows Enhanced Metafile

image/x-emf
VS

Macromedia FreeHand Document

image/x-freehand
FreeHand

A complete technical comparison of Windows Enhanced Metafile and Macromedia FreeHand Document — covering compression, feature support, browser compatibility, magic bytes, and when to choose each format.

Equal browser support

Feature Support

Feature EMF FreeHand
Transparency (Alpha) Yes Yes
Animation Support ✕ No Yes
Progressive Loading ✕ No ✕ No
HDR Support ✕ No ✕ No
EXIF Metadata ✕ No ✕ No
ICC Color Profile Yes Yes
Windows Enhanced Metafile
image/x-emf
Extension
.emf
Container Windows GDI/GDI+ Record Sequence
Compression Uncompressed (Binary Drawing Records)
Algorithm
None
Color Depth Vector (32-bit GDI/GDI+ Colors), Supports embedded 24-bit/32-bit bitmaps
Developed by Microsoft Corporation
Released 1993
Magic Bytes
01 00 00 00 (Header Type) ... 20 45 4D 46 (Signature at offset 40)
Full EMF reference →
Macromedia FreeHand Document
image/x-freehand
Extension
.fh.fh4.fh5.fh7.fh8.fh9.fh10.fh11.ft11
Container Proprietary Binary (Aldus Graphic Document)
Compression Uncompressed / Deflate (in later versions)
Algorithm
NoneDeflate (Optional in later versions)
Color Depth Vector Data (RGB/CMYK)
Developed by Altsys / Aldus / Macromedia
Released 1988
Magic Bytes
41 47 44 31 to 41 47 44 34
Full FreeHand reference →

Browser Support Comparison

Browser EMF FreeHand
Chrome Chrome
✕ ✕
Firefox Firefox
✕ ✕
Safari Safari
✕ ✕
Edge Edge
✕ ✕
IE IE (Legacy)
✓
 ✕
EMF

EMF Strengths

  • Device independent, meaning it renders consistently across different monitors and printers regardless of resolution
  • Fully supports 32-bit precision and advanced GDI+ drawing commands, including alpha transparency and anti-aliasing (EMF+)
  • Native rendering within the Windows OS ensures fast performance and flawless fidelity in Microsoft Office applications
Limitations
  • Heavily tied to the Windows Graphics Device Interface API, making it notoriously difficult to parse perfectly on macOS or Linux
  • Completely unsupported by modern web standards; cannot be embedded in HTML without conversion to SVG
  • Security history: Like WMF, malicious drawing records can theoretically exploit vulnerabilities in older GDI parsers
FreeHand

FreeHand Strengths

  • Historically one of the most powerful and intuitive vector editors on the market, praised for multi-page support long before Adobe Illustrator implemented it
  • Files are generally compact and self-contained
Limitations
  • Completely abandoned proprietary format; Adobe actively blocked native import in modern versions of Illustrator
  • No support in modern web browsers; must be converted to SVG
  • Versioning fragmentation means parsers must account for wildly different binary structures depending on the specific .fhX extension used

When to choose which format

EMF
Use EMF when…
  • Microsoft Office Vector Graphics and Clip Art
  • Windows Print Spooling (EMF Spool Files)
  • High-fidelity Vector Interchange on Windows
FreeHand
Use FreeHand when…
  • Legacy Graphic Design Portfolios
  • Historical Desktop Publishing Archival
  • Old Corporate Logo Vectors

More comparisons

EMF vs ACES → FreeHand vs ACES → EMF vs APNG → FreeHand vs APNG → EMF vs AVCI → FreeHand vs AVCI → EMF vs AVCS → FreeHand vs AVCS → EMF vs AVIF → FreeHand vs AVIF → All comparisons →
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