Image to Base64
Convert any image into Base64 strings, Data URIs, HTML img tags, or CSS snippets.
Drop your image here, or browse
Supports PNG, JPG, WebP, SVG, GIF, BMP, and ICO. 100% private in-browser encoding.
How to use Image to Base64
- 1Upload or drag and drop any image (PNG, JPG, WebP, SVG, GIF, BMP).
- 2Choose your preferred output format: Data URI, Raw Base64, HTML <img> tag, or CSS background-image.
- 3Click the copy button for instant clipboard access or download the .txt string file.
Key Features & Highlights
- •Generates instant Data URIs, raw Base64 strings, HTML <img> tags, and CSS snippets
- •100% private in-browser encoding with zero server uploads
- •Real-time character count and base64 size breakdown
- •One-click download as a .txt file
- •Supports all standard web image formats including SVG and WebP
Free Image to Base64 Converter
Convert your images into Base64 encoded strings directly in your web browser. Base64 encoding transforms binary image data into safe ASCII characters, allowing you to embed images directly into HTML documents, CSS stylesheets, JSON payloads, or email templates without requiring separate HTTP requests.
Zero Server Uploads & Total Privacy
Because all encoding occurs client-side using the HTML5 FileReader API, your files are processed entirely on your machine. No images are sent to any remote server or stored in any database.
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Frequently Asked Questions
Is my image uploaded to any server during Base64 encoding?
No. All Base64 encoding occurs client-side using the HTML5 FileReader API directly in your browser. Your images never leave your computer.
Does Base64 encoding increase image file size?
Yes, Base64 strings are approximately 33% larger than their binary equivalents because 3 bytes of binary data are represented by 4 ASCII characters. For small icons, SVG assets, and badges, Base64 is ideal because it eliminates round-trip HTTP requests.
What is the difference between a Data URI and a raw Base64 string?
A Data URI includes the MIME type header prefix (e.g., `data:image/png;base64,iVBORw...`), making it directly usable in HTML `<img src="...">` or CSS `background: url(...)`. A raw Base64 string contains only the encoded ASCII characters, typically used in JSON API payloads or database storage.
When should I embed images as Base64 in HTML or CSS?
Base64 inlining is best practice for small UI icons (<10 KB), SVG logos, critical above-the-fold email signatures, and single-file HTML distributions where avoiding external network requests improves initial rendering speed.
What image formats can be converted to Base64?
Our converter supports all major image formats, including PNG, JPEG, WebP, SVG, GIF, AVIF, BMP, and ICO. The appropriate MIME type header is automatically assigned.
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