PDF Tools
PDF Add Signature Online
Add a visible typed or image signature block to selected PDF pages and download the signed copy
file· File resultOpen tool
Quick start
Call this tool from your code in three languages.
cURL
# 1) Request a presigned URL → returns { uploadUrl, storageKey }
curl -X POST 'https://api.elysiatools.com/api/upload/presign/pdf-add-signature-online' \
-H 'Content-Type: application/json' \
-d '{"filename":"pdfFile.ext","contentType":"application/octet-stream","size":12345}'
curl -X POST 'https://api.elysiatools.com/api/upload/presign/pdf-add-signature-online' \
-H 'Content-Type: application/json' \
-d '{"filename":"signatureImage.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/en/api/tools/pdf-add-signature-online' \
-F 'pdfFile=uploads/2026/01/01/your-tool-1700000000000-abc123.ext' \
-F 'signatureType=text' \
-F 'signatureImage=uploads/2026/01/01/your-tool-1700000000000-abc123.ext' \
-F 'signatureText=Approved' \
-F 'reason=Review complete' \
-F 'location=' \
-F 'includeDate=true' \
-F 'pageTarget=last' \
-F 'pageNumber=1' \
-F 'position=bottom-right' \
-F 'customX=36' \
-F 'customY=36' \
-F 'boxWidth=180' \
-F 'boxHeight=72' \
-F 'signatureColor=#1f2937'