🖋️ 在线手写签名（生成透明签名图片）Online Signature Maker

使用说明与常见问题How-to & FAQ

「在线手写签名（生成透明签名图片）」是什么？What is the Online Signature Maker?

用鼠标、手指或手写笔在线手写签名，笔迹粗细随速度和压感自然变化，自动裁掉空白，导出透明背景 PNG 或 SVG 矢量签名，可复制粘贴到 Word、PDF 和电子合同中。签名只保存在你的浏览器里。Draw your signature with a mouse, finger or stylus — natural stroke width from speed and pressure, automatic trimming, and export as a transparent PNG or SVG to paste into Word, PDFs or e-contracts. Your signature stays in your browser.

如何使用「在线手写签名（生成透明签名图片）」？How do I use the Online Signature Maker?

在签名框里写下你的名字，可以选择黑色、蓝色或红色笔迹并调整粗细，写错了点“撤销”。写好后点“下载 PNG 签名”得到透明背景图片，或“复制图片”直接粘贴到文档里。Sign in the box, choose black, blue or red ink and the pen width; use Undo for mistakes. Download a transparent PNG, or Copy image to paste straight into a document.

签名图片怎么放到 PDF 合同上？How do I put the signature on a PDF contract?

下载透明 PNG 签名后，打开“PDF 签名”工具，上传合同 PDF，把签名图片拖到需要签字的位置即可。Download the transparent PNG, open the Sign PDF tool, upload the contract and drag the signature into place.

纸上写的签名能变成电子签名吗？Can I turn a signature written on paper into an image?

可以用“手写签名提取”工具：拍一张白纸上的签名照片上传，会自动去掉白底，得到透明的签名图片。Use the Signature Extractor: photograph the signature on white paper and it removes the background to give a transparent image.

在线签名有法律效力吗？Is an online signature legally binding?

签名图片本身只是笔迹图像。是否有法律效力取决于合同双方约定和当地法律，重要合同建议使用有资质的电子签名服务或手写签署纸质文件。A signature image is just a picture of your handwriting. Legal effect depends on the agreement and local law; for important contracts use a certified e-signature service or sign on paper.

「在线手写签名（生成透明签名图片）」免费吗？文件会上传吗？Is the Online Signature Maker free? Are my files uploaded?

「在线手写签名（生成透明签名图片）」完全免费，无需注册。图片只在你的浏览器里处理，不会上传到任何服务器，关闭页面后不留痕迹。The Online Signature Maker is free with no sign-up. Images are processed only in your browser, never uploaded to any server, and nothing is kept after you close the page.