PDFlastica 是一款简单免费的 Windows PDF 签名软件，帮助用户快速为 PDF 文件添加签名。软件界面简洁，操作直观，无需复杂设置，即可轻松完成文档签署。 软件提供两种签名方式。用户可以输入姓名生成签名，也可以直接在绘图区域手写签名，根据不同需求自由选择。 在输入签名模式下，输入姓名后点击 “使用”，签名会显示在 PDF 预览区域。用户可通过 “缩小” 和 “放大” 按钮调整签名大小，并拖动到合适的位置。 在手写签名模式下，可直接在绘图区域书写签名，点击 “使用” 后即可添加到 PDF。手写签名同样支持大小调整，方便根据文件内容进行微调。 加载 PDF 后，文件会显示在预览区域。软件支持多页 PDF，可切换页面查看不同内容，并将签名放置到需要的位置。完成调整后，点击 “保存” 即可生成新的已签名 PDF 文件。 PDFlastica 的所有操作均在本地电脑完成，无需上传文件或连接网络，有助于保护文档隐私和安全。
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