Image to Base64 Converter — Free Online Tool
Convert images to Base64 encoded strings for use in HTML, CSS, and APIs. Supports JPG, PNG, GIF, and WebP. Runs entirely in your browser — your images are never uploaded.
Select an image to see a preview
Common use cases
- —Embedding small icons or logos directly in HTML or CSS without a separate file request.
- —Storing image data inside JSON payloads or configuration files.
- —Testing APIs that accept or return Base64-encoded images.
- —Quickly previewing or inspecting Base64 strings from logs or API responses.
Notes
- —Runs entirely in your browser — no image data is uploaded to any server.
- —Data URL format includes the MIME prefix: data:image/png;base64,… — use Raw Base64 if you only need the encoded string.
- —Large images produce very long Base64 strings. For large files, prefer a URL reference instead.