快捷工具

Image to Base64

Convert images to Base64 encoded strings for use in HTML, CSS, or JSON data.

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支持文档、图片、音频、视频和文本文件

完全免费 · 无需注册 · 不存储文件

Performance
Web Worker Enabled
Using Web Worker for better performance (prevents UI freezing with large images)
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Examples

FAQ

Q: What is Base64 image encoding?

A: Base64 encoding converts binary image data into an ASCII string that can be embedded directly in HTML, CSS, or JSON.

Q: When should I use Base64 images?

A: Use Base64 for small icons or images to reduce HTTP requests, or when you need to embed images in JSON/data URIs.

Q: Is there a size limit?

A: Base64 encoding increases file size by ~33%, so it's best for images under 100KB.

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Privacy: This tool runs entirely in your browser. No data is sent to our servers.