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How to Use
- 1Click the drop zone or drag and drop an image file (PNG, JPG, GIF, SVG, or WebP).
- 2The image preview and Base64 output appear instantly after upload.
- 3Copy the full data URI (with MIME prefix) for use in HTML img tags or CSS.
- 4Or copy just the raw Base64 string for use in APIs and backend code.
About Image to Base64
The Image to Base64 converter turns any image into a Base64-encoded data URI string you can embed directly in HTML, CSS, or JavaScript. This eliminates extra HTTP requests and simplifies deployment for small images like icons and logos.
Supports PNG, JPG, JPEG, GIF, SVG, and WebP formats up to 10 MB. The output includes both the full data URI (with MIME type prefix) and the raw Base64 string, so you can use it wherever you need — img src attributes, CSS background-image, email templates, or API payloads.
All encoding runs locally in your browser. Your images are never uploaded to any server, making this tool safe for encoding sensitive graphics like signatures, internal diagrams, or proprietary design assets.
Frequently Asked Questions
What image formats are supported?
PNG, JPG/JPEG, GIF, SVG, and WebP files up to 10 MB. The MIME type in the data URI is set automatically based on the file format.
What is the difference between a data URI and raw Base64?
A data URI includes the MIME prefix (e.g., data:image/png;base64,...) and can be used directly in HTML and CSS. Raw Base64 is just the encoded string without the prefix, useful for APIs and backend storage.
Will Base64 encoding increase the file size?
Yes. Base64 encoding increases data size by approximately 33%. For images under 10 KB (like icons), the trade-off is worth it to save an HTTP request. For larger images, use regular file serving.
Can I use Base64 images in emails?
Yes. Many email clients support inline Base64 images via data URIs, making it useful for email signatures and HTML newsletters where hosted images might be blocked.
Is my image uploaded to a server?
No. The entire conversion runs in your browser using the FileReader API. Your image data never leaves your device.