Image ↔ Base64
Convert images to Base64 data URLs and back.
How to use
- 「图片 → Base64」：选择或拖入图片，生成 Data URL 或纯 Base64。
- 「Base64 → 图片」：粘贴 Data URL 或纯 Base64，预览并可下载。
- 全程本地 FileReader 处理，不上传。
- 单文件建议不超过 15MB，以免页面卡顿。
FAQ
Does Image ↔ Base64 upload my data?
No. Processing stays in your browser and is not uploaded.
Do I need an account?
No. Open and use — no signup.
How is this different from upload-based tools?
Tools run locally in your browser; content is not sent to our servers for processing.
Are there limits?
Limited by device memory and the browser; very large inputs may slow the page.