Image to Base64 Converter
Convert any image to a Base64 encoded string instantly.
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JPG, PNG, WebP, SVG, GIF — encoded in your browser
About Image to Base64
Convert any JPG, PNG, GIF, WebP, or SVG image into a Base64 encoded string or a complete data URI. Use the output directly in HTML `<img src="...">`, CSS `background-image: url(...)`, or JSON payloads. Copying Base64 images into source code eliminates external HTTP requests for small icons and logos.
Use Cases
Embedding small icons and logos directly in HTML/CSS, sending images via JSON APIs without file uploads, storing images as strings in databases, generating data URIs for email templates, testing image rendering without a server.
How It Works
Uses the FileReader API with readAsDataURL() to read the image file as a Base64-encoded data URI. The output includes the MIME type prefix (e.g. data:image/png;base64,...). Nothing is sent to any server.
FAQs
How much larger is a Base64 image than the original file?
Base64 encoding increases size by approximately 33%. A 100 KB image becomes about 133 KB as a Base64 string.
Can I use the output directly in an HTML img tag?
Yes. Copy the full output (including the data:image/...;base64, prefix) and paste it as the src attribute value.
Is there a file size limit?
No server-side limit. However, embedding very large images as Base64 will bloat your HTML/CSS files. This is best suited for images under 50 KB.