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Comparison/ICO vs SVG
Microsoft IconvsScalable Vector Graphics

ICO vs SVG

Technical analysis 2026: differences, performance and which one you should use for your project.

Quick Verdict

"SVG is unbeatable for vectors (logos, icons). For raster images (photos), use the other format."

Format A

ICO

A specific container for Windows icons and website favicons. It can hold multiple sizes and color depths in a single file.

CompressionBoth
Transparency Yes
Animation No
Year1985

Best for:

  • Favicons
  • Desktop icons
Format B

SVG

XML-based vector graphics. It uses math instead of pixels, so it is infinitely scalable without losing quality.

CompressionLossless
Transparency Yes
Animation Yes
Year2001

Best for:

  • Icons
  • Logos
  • Simple illustrations
  • Interactive graphics

Detailed Analysis

When comparing ICO (Microsoft Icon) with SVG (Scalable Vector Graphics), it is important to understand the historical and technical context. ICO was established in 1985, while SVG appeared in 2001.

The main technical difference lies in their compression algorithm. ICO uses hybrid (both lossy and lossless) compression: you can choose between maximum quality or maximum savings depending on the settings. SVG, on the other hand, uses lossless compression: it keeps all the original data with no quality loss.

Compatibility

ICO

100% (For favicons)

SVG

100% (Universal)

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