PDF Tools
PDF 保密水印生成
动态生成“仅供内部使用/保密”水印（含用户名和时间戳）
file· 文件结果打开工具
快速开始
用三种语言从你的代码中调用此工具。
cURL
# 1) Request a presigned URL → returns { uploadUrl, storageKey }
curl -X POST 'https://api.elysiatools.com/api/upload/presign/pdf-watermark-confidential' \
-H 'Content-Type: application/json' \
-d '{"filename":"sourceFile.ext","contentType":"application/octet-stream","size":12345}'
# 2) PUT the file bytes directly to the presigned uploadUrl
curl -X PUT '<presigned uploadUrl>' \
--data-binary @/path/to/file.ext
# 3) Call the tool, passing the returned storageKey for each file field
curl -X POST 'https://api.elysiatools.com/zh/api/tools/pdf-watermark-confidential' \
-F 'sourceFile=uploads/2026/01/01/your-tool-1700000000000-abc123.ext' \
-F 'username=alice.wang' \
-F 'policyText=INTERNAL USE ONLY' \
-F 'timestampMode=iso' \
-F 'opacity=0.22' \
-F 'rotateDeg=-30' \
-F 'fontSize=26' \
-F 'colorHex=#b91c1c' \
-F 'tile=true'