图片转 Base64 转换器

将图片转换为 Base64 编码字符串和 data URI。支持 PNG、JPG、GIF、SVG、WebP。拖放上传。免费使用，无需注册。

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Drop an image here or click to select

Supports PNG, JPG, GIF, SVG, WebP, ICO

About Image Base64 Encoding

Converting images to Base64 strings allows you to embed them directly in HTML, CSS, or JSON without separate image files. This is useful for small icons (under 10KB), email templates, and reducing HTTP requests. The trade-off is a ~33% increase in data size compared to the binary original.

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使用方法

Drag & drop an image or click to select a file
View the Base64 string, data URI, HTML tag, and CSS snippet
Copy any format you need
Switch to 'Base64 → Image' tab to decode

常见用途

Embedding small icons in HTML/CSS
Including images in email templates
Storing images in JSON/YAML configs
Reducing HTTP requests for small assets

常见问题

What image formats are supported?

PNG, JPG/JPEG, GIF, SVG, WebP, ICO, and BMP. Any image format your browser can display.

Is there a file size limit?

No hard limit, but Base64 encoding increases size by ~33%. Images over 10KB are generally not recommended for Base64 embedding.

Is my image uploaded to a server?

No. All conversion happens entirely in your browser. Your images never leave your device.