Email Banner & Header Size Template Generator

Email Banner & Header Size Template Generator gives you the correct dimensions for every common email graphic — header banners, hero images, promo banners, footer graphics, and product grid images — along with the matching retina export size and a ready-to-paste, Outlook-safe HTML snippet.

Getting banner dimensions wrong is one of the most common causes of blurry, stretched, or inconsistently rendered email graphics. This tool removes the guesswork so your images look sharp and your layout holds up across Gmail, Outlook, Apple Mail, and mobile inboxes.

• Preset banner types: Header, hero, promo, footer, CTA band, and product grid dimensions based on common email layout patterns.
• 600px and 640px container support: Dimensions automatically scale to your chosen email width standard.
• Retina @2x export size: Always know the exact pixel dimensions to export your source image at.
• Outlook-safe HTML snippet: Table-wrapped, responsive image markup that renders consistently across major email clients.
• File size guidance: Practical weight targets to keep your emails fast-loading and less likely to be clipped.

1. Pick your email container width — 600px is the safest default.
2. Choose a banner type to see its recommended display and retina export dimensions.
3. Export your image at the retina size shown, then design at that resolution for sharp rendering.
4. Switch to the HTML Snippet tab to generate the Outlook-safe markup with your image URL, alt text, and link.
5. Paste the snippet into your email template and check the file size against the guidance shown.

Example 1: A newsletter header uses a 600x150 banner, exported at 1200x300 for retina displays, wrapped in a presentation table so it renders identically in Outlook and Gmail.

Example 2: A two-column product grid inside a 600px email uses two 280x280 images side by side, each exported at 560x560 for sharp retina rendering.

• Sharper images: Retina export sizing eliminates blurry banners on modern screens.
• Consistent rendering: Outlook-safe HTML reduces layout breakage across email clients.
• Faster load times: File size guidance keeps images from slowing down or getting clipped.
• Less design guesswork: Preset dimensions for every common email graphic type.
• 100% free and private: No sign-up, no data stored, runs entirely in your browser.