Image to Base64 & SVG Optimizer
Convert images offline into Base64 Data-URIs for HTML/CSS or minify and optimize SVG files directly in your browser.
Drag and drop image file here or
Supports PNG, JPEG, SVG, WEBP, GIF
Preview
Upload an image to see a preview here.
Guide & best practices
Image to Base64 for data URIs and SVG optimization
Encode images as Base64 data URIs for inline embedding and optimize SVGs – privacy-friendly and local.
Typical use cases
Useful for small inline icons, email templates, CSS backgrounds and reducing extra HTTP requests.
How Balou encodes images
Upload an image; Balou generates the Base64 data URI locally, detects the MIME type and warns on oversized files.
Data URI best practices
Use data URIs only for small assets, optimize SVGs before embedding and prefer regular files for large images.
Frequently asked questions
When is a data URI worth it?
Mainly for small icons/logos to save extra HTTP requests; for large images a separate file is better.
How much does Base64 grow the file?
By about 33%, since 3 bytes map to 4 Base64 characters.
Is the MIME type detected?
Yes, Balou determines the MIME type (e.g. image/png, image/svg+xml) for the correct data URI prefix.
Are my images uploaded?
No, the encoding runs locally in the browser; your images do not leave the page.