Email Signature Banner Maker
What this is: a free AI banner maker built for one job — the banner that sits inside your email signature. Enter your domain, and it pulls your logo and brand colours automatically; pick a goal (sale, event, booking link) and download a correctly-sized, email-safe banner in seconds. No account needed to try it. It pairs with the email signature generator, which places the banner under your signature in Gmail in one click.
Enter your domain — we pull your logo and colors. Pick a goal — we compose the banner. Download a PNG in standard email sizes.
Email banner sizes that actually work
| Use | Size | Why |
|---|---|---|
| Signature banner | 600×200 | Matches standard 600 px email width; readable without dominating |
| Slim signature strip | 700×150 | Subtle, fits under long signatures |
| Newsletter header | 600×300 | Hero position at the top of a campaign |
| Promo card | 640×360 | In-body promotional block |
- Keep the file under ~100 KB — heavy images trigger clipping and slow loads.
- One message, one button. A banner with three CTAs is a banner with zero.
- Always link the image and set alt text — some clients block images by default.
- Don't make the whole email an image — spam filters and accessibility both suffer.
Frequently asked questions
What's the best size for a signature banner?
600×200 px, exported at 2× for retina. It matches the standard email content width.
Does it really use my brand colors?
Yes — enter your domain, and your site's logo and dominant colors are fetched and extracted right in your browser. Override anything manually.
How do I put it in my signature?
Download the PNG and use the banner block in the ProSignature editor (with a link URL), or insert it in Gmail/Outlook signature settings.
Is anything uploaded?
No — fetching, composing and export run entirely in your browser. Attached photos never leave your device.
A banner is one email. A signature is every email.
Logo, photo, social links, banner block, one-click Gmail install — free to start.
Create my email signature →