Free Tool
Image to Base64 Converter
Upload an image and instantly get its Base64 string — 100% client-side, nothing leaves your browser.
Click to upload or drag & drop
PNG, JPG, GIF, WebP, SVG supported
What is Base64 Encoding?
Base64 is an encoding scheme that converts binary data (like an image) into a text string using 64 printable ASCII characters. This makes it safe to embed binary data inside text-based formats like HTML, CSS, JSON, or XML.
Common Uses for Image Base64
- Inline CSS backgrounds — embed small icons directly in stylesheets to eliminate HTTP requests.
- HTML email images — avoid external URL blocking by embedding images inline.
- Data URLs in JavaScript — generate image previews without uploading to a server.
- JSON APIs — some APIs accept image data as a Base64 string in the request body.
- SVG embedding — include raster images inside SVG files.
Full Data URI vs Raw Base64
- Full data URI — includes the MIME type prefix:
data:image/png;base64,iVBOR.... Use this in<img src="...">or CSSbackground-image: url(...). - Raw Base64 — just the encoded string without the prefix. Use when the destination system adds its own prefix, or for API calls.