Image to Base64

How to use

Drop or click to select any image (JPG, PNG, GIF, WebP, SVG). The Base64 output appears instantly. Choose your output format — Base64 only, Data URL, CSS background, HTML img tag, or Markdown — then copy or download.

Why use this tool

Convert an image to Base64 when you want to embed it directly in HTML, CSS, or Markdown without hosting it anywhere. Ideal for email templates, inline CSS, single-file documents, data URIs in prototypes, and small icons. Everything runs locally — your image never leaves the browser, which also makes it faster than upload-based converters.

FAQ

What image formats are supported?

Any image format your browser can read: JPG, PNG, GIF, WebP, SVG, BMP, AVIF, and more.

How do I convert a PNG to Base64?

Drop the PNG onto the tool — the Base64 string appears instantly. The Data URL output keeps the original MIME type (data:image/png;base64,...), and the same flow works for JPG, GIF, WebP, or SVG.

How do I use a Base64 image in HTML or CSS?

Pick the HTML img tag or CSS background output format — the tool builds the full snippet for you, so you can paste it straight into your markup or stylesheet.

Why is the Base64 output larger than the original?

Base64 encoding increases file size by approximately 33%. This is a trade-off for embedding data directly in text formats.

When should I not use Base64 images?

For large photos or images reused across many pages. Base64 adds ~33% size and can't be cached separately from the document, so it is best for small icons and logos — roughly under 10 KB.

Is my image uploaded to a server?

No. All processing uses the browser's FileReader API — your image never leaves your device.