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July 23, 2026
Tips & Tricks

Email Signature Image Size: Logo & Photo Dimensions

Correct logo and photo dimensions keep signatures sharp without bloating email size.

Logos and headshots are the #1 cause of broken signatures. Wrong dimensions look blurry; oversized files get blocked.

Recommended dimensions

  • Logo display: 120–150 px wide
  • Logo file: upload 2x (240–300 px) for retina
  • Headshot: 80–100 px square display
  • Banner: max 600 × 120 px
  • Format: PNG for logos, JPG for photos

Hosting

Always use https:// hosted URLs. ProSignature uploads and inlines images automatically on export.

Related

Logo guide · Signature size · HTML guide

Build with correct sizing

Upload logo in the generator — preview shows actual render size before export.

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