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免费 Image to Base64
Convert an image to a Base64 data URI for inline use in CSS, HTML, or Markdown. Copy ready-made snippets. Encoded in your browser; never uploaded.
无文件大小限制文件保持私密无需登录永久免费
将文件拖放到此处或点击浏览
PNG, JPG, WebP, GIF, SVG, AVIF, X, Image 无文件大小限制
你的文件永远不会离开你的设备。所有处理都在你的浏览器中本地进行。
Convert an image to a Base64 data URI you can paste directly into CSS, HTML, or Markdown — no separate file needed. Encoded in your browser; never uploaded.
Optimize for your platform
工作原理
A data URI embeds an image directly into your code as text, so it loads without a separate file request — handy for small icons and self-contained HTML. This encodes it in your browser.
- 1You drop in an imageIt's read locally with the FileReader API — never uploaded.
- 2It's Base64-encodedThe image bytes become a data: URI (data:image/...;base64,…) right in your browser.
- 3You pick a snippetCopy the raw data URI, or ready-made CSS (background-image), HTML (<img>), or Markdown.
- 4Paste it into your codeThe image now travels inline with your CSS/HTML — no extra file to host.
The image is encoded entirely on your device. Note that Base64 is ~33% larger than the original, so data URIs are best for small images.
为什么选择我们的？
✓Completely free — no hidden costs, ever
✓No account, email, or login required
✓Files stay on your device — processing happens in your browser
✓Works on any device — phone, tablet, desktop
✓No watermarks on any output
✓Browser memory limits may apply for very large files
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