Image to Base64

Converting images to Base64 allows embedding them directly in HTML, CSS, or JSON without separate HTTP requests.

When to Use Image Base64

Small icons and logos: Eliminates extra HTTP requests for tiny images — reduces page load time. Email templates: Inline images display regardless of external image blocking. CSS backgrounds: Embed small background images or gradients directly in stylesheets. Single-file apps: Bundle images into a single HTML file for offline use.

When NOT to Use Base64

Large images: Base64 increases file size by approximately 33%. Use for images under 10–15KB only. Performance-critical sites: Too many Base64 images increase HTML/CSS file size, slowing initial parse time.

Data URI Format

data:[mediatype];base64,[data] — can be used anywhere an image URL is required: src attributes, CSS url(), backgrounds.

Decode Mode

Paste any Base64 string or data URI to decode it back to a viewable and downloadable image.