Email signature size and dimensions guide
The correct size for email signatures, logos, photos, and banners. Avoid the most common sizing mistakes.
Email signature size and dimensions guide
- 1
Maximum width: 600px — standard email content width. Wider signatures get clipped on mobile clients.
- 2
Maximum height: 150–200px for most use cases — taller signatures may be collapsed or hidden automatically.
- 3
Headshot size: 80×80px to 100×100px source image, displayed at 56px. Use a square crop with your face centred.
- 4
Logo size: 120px wide maximum, 28–40px tall. Use PNG with a transparent background for best results.
- 5
Banner image: 600px wide, 100–180px tall maximum. Keep the file size under 50KB to avoid slow loading.
- 6
Badge or certification images: 80px wide, 28–36px tall. Keep each image under 10KB.
- 7
Font size: minimum 11px for fine print (disclaimers), 12–13px for contact details, 14–15px for your name.
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// what people say
Loved by people who send a lot of email.
"I've tried four of these things. signcraft is the only one where my signature actually looks the way it did in the preview after I paste it into Gmail."
Elena Marrok
Brand Director, Vector Studio
"Rolled it out across our whole firm in an afternoon. Forty-two lawyers, one consistent look, zero IT tickets. That's basically a miracle."
Samir Rahimi
Managing Partner, Lumen Law
"I was about to pay someone $400 to design this. Did it in three minutes. Tasteful defaults — that's what I'm paying for, and it's free."
Jordan Tellez
Independent Consultant