# Image to Base64

> Turn any image into a Base64 string or data URI, formatted and ready to paste into HTML, CSS, or JSON.

Open the tool: https://yourbrowsercandoit.com/image-to-base64

Encode an image as a data URI for HTML or CSS. Free, no signup. Runs entirely in your browser; files are never uploaded.

## How it works

Drop an image and it's encoded to Base64 instantly with the browser's FileReader API. The output format selector gives you four ready-to-paste forms: the full data URI (data:image/png;base64,…), raw Base64 with no prefix (for JSON fields or API payloads), a complete <img> tag, or a CSS background-image rule. JPG, PNG, WebP, GIF, AVIF, and SVG all work — if your browser can display it, it can encode it. One honest caveat: Base64 makes data about 33% larger than the binary file, so inline only small images like icons, logos, and avatars; for photos, keep them as separate files so the browser can cache them. Encoding runs entirely in your tab — no upload, no signup, works offline once the page is loaded.

## How to use it

1. **Drop your image.** Drag a file onto the drop zone, click to browse, or paste from the clipboard.
2. **Pick an output format.** Data URI, raw Base64, an <img> tag, or a CSS background-image rule.
3. **Copy the result.** One click puts the encoded string on your clipboard — nothing ever touched a server.

## Frequently asked questions

### Is my image uploaded to a server?

No. The encoding uses the FileReader API in your own browser. The image bytes never leave your device — you can verify it in DevTools' Network panel.

### Which image formats are supported?

Anything your browser can decode: JPG, PNG, WebP, GIF, AVIF, BMP, ICO, and SVG. The MIME type in the output is taken from the file itself.

### Why is the Base64 output larger than my file?

Base64 encodes every 3 bytes into 4 characters, so text output is about 33% bigger than the binary original. That's inherent to the format, not this tool.

### When should I inline an image as a data URI?

For small assets where saving an HTTP request wins: icons, logos, bullets, avatars. Don't inline large photos — they can't be cached separately, and the +33% size bloats your HTML or CSS.

## Related tools

- [JSON to CSV](https://yourbrowsercandoit.com/json-to-csv): Turn JSON into a CSV table, nested fields and all.
- [CSV to JSON](https://yourbrowsercandoit.com/csv-to-json): Convert CSV to a JSON array, with live preview.
- [Password generator](https://yourbrowsercandoit.com/password-generator): Generate strong random passwords with crypto entropy.
- [Password strength](https://yourbrowsercandoit.com/password-checker): Check password strength with zxcvbn-style heuristics.
- [JSON formatter](https://yourbrowsercandoit.com/json-formatter): Format, validate and fix JSON, with a tree view.
- [Regex tester](https://yourbrowsercandoit.com/regex-tester): Test regular expressions with live highlighting.