Image MIME Reference
SVG
Scalable Vector Graphics
image/svg+xml
VS
Truevision TGA (Legacy MIME Alias)
image/x-tga
TGA
A complete technical comparison of Scalable Vector Graphics and Truevision TGA (Legacy MIME Alias) — covering compression, feature support, browser compatibility, magic bytes, and when to choose each format.
SVG wins on browser support
Feature Support
| Feature | SVG | TGA |
|---|---|---|
| Transparency (Alpha) | Yes | Yes |
| Animation Support | Yes | ✕ No |
| Progressive Loading | ✕ No | ✕ No |
| HDR Support | Yes | ✕ No |
| EXIF Metadata | ✕ No | ✕ No |
| ICC Color Profile | ✕ No | ✕ No |
Scalable Vector Graphics
image/svg+xml
Extension
.svg.svgz
Container
XML Document
Compression
Uncompressed (Plain Text XML) / Lossless (GZIP via .svgz)
Algorithm
None (for .svg)GZIP (for .svgz)
Color Depth
Vector (Independent of bit-depth), CSS Colors (HEX, RGB, HSL, Display-P3)
Developed by
World Wide Web Consortium (W3C)
Released
2001
Magic Bytes
3C 73 76 67 (for <svg) / 3C 3F 78 6D 6C (for <?xml)
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)
Browser Support Comparison
| Browser | SVG | TGA |
|---|---|---|
Chrome
|
✓ All
|
✕ |
Firefox
|
✓ All
|
✕ |
Safari
|
✓ All
|
✕ |
Edge
|
✓ All
|
✕ |
IE (Legacy)
|
✓
|
✕ |
SVG
SVG Strengths
- Provides infinite resolution scalability, looking perfectly crisp on high-DPI (Retina) displays without increasing file size
- Extremely lightweight compared to raster formats for flat graphics, logos, and UI elements
- Can be manipulated dynamically via the browser's CSS and JavaScript engines (DOM integration)
Limitations
- Unsuitable for complex photographic images or photorealistic textures
- Poses critical security vulnerabilities (XSS and XML External Entity attacks) if user-uploaded SVGs are not heavily sanitized
- Rendering performance degrades significantly if the SVG contains tens of thousands of complex nodes or deeply nested paths
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
SVG
Use SVG when…
- Web Logos & UI Icons
- Responsive Web Design Elements
- Interactive Data Visualizations (D3.js)
- CSS and SMIL Web Animations
TGA
Use TGA when…
- Video Game 3D Textures and Materials
- 3D Rendering and Animation Sequences
- Legacy Video Production Workflows