Flags of the Holy Roman Empire with double headed eagles:

SVG:

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  SVG version with haloes
• 
  SVG version without haloes
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  SVG version with haloes and arms (1437–1493)
• 
  SVG version with haloes and arms (1493–1556)

other variants:

• 
  SVG 14th-century single-headed version
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  SVG version with one head with halo
• 
  SVG version with one head without halo
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  SVG variant of style after 1400
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  SVG variant with haloes
• 
  SVG variant with haloes
• 
  PNG version with haloes.
• 
  GIF version with sword, sceptre and imperial crown. Without haloes.
• 
  JPG version with haloes.