Base64 Image Encoder for Email
Convert images to base64-encoded data URIs for embedding directly in email HTML. Upload an image and get ready-to-use HTML, CSS, and raw base64 output.
About this tool
Base64 encoding lets you embed images directly in your email HTML without hosting them on a server. This can be useful for logos, icons, and small graphics that need to display immediately without external requests. However, base64 increases email size by roughly 33%, so use it sparingly and only for small images. For larger images, host them on a server and reference them with regular img tags. Check your total email size with our email word counter, and optimize your text-to-image ratio to maintain good deliverability.
Frequently Asked Questions
More Free Tools
View all toolsEmail Name Generator
Generate professional email address ideas based on your name. Create variations for Gmail, Outlook, Yahoo, and more with our free email username generator.
Email Signature Generator
Create professional HTML email signatures for Gmail, Outlook, and Apple Mail. Choose from multiple styles and customize with your contact info and social links.
HTML Email Button Generator
Create bulletproof HTML email buttons that work in Gmail, Outlook, Apple Mail, and all major email clients. Includes VML fallback for perfect Outlook rendering.
Email Preheader Generator
Generate compelling email preheader text that complements your subject line. The preheader is the preview text shown after the subject line in most email clients.