Sign PDF Online
Upload a PDF, draw your signature, drag and resize it on the document, and download the signed PDF directly from your browser.
Frequently asked questions
How does the Sign PDF tool work?
Draw a signature and place it anywhere on a PDF page. The operation runs from the tool workspace after you choose one PDF file.
Are files uploaded when I use Sign PDF?
No. Processing is designed to run locally in your browser, so PrefillPDF does not receive or store the document used by this tool.
Will Sign PDF overwrite my original file?
No. Your source remains unchanged. The tool creates a separate result for download.
What are the file limits for Sign PDF?
You can use up to 1 file with a combined size of up to 100 MB per operation.
Can Sign PDF open password-protected PDFs?
Encrypted PDFs may fail to open. Unlock the document first and then use the unlocked copy.
Does Sign PDF reduce document quality?
The tool avoids intentional recompression when page content can be copied directly. Conversion tools render output at the configured quality.
Is Sign PDF a certificate-based digital signature tool?
No. It places a visual signature on the document and does not create a cryptographic certificate signature.
Can I resize the signature before saving?
Yes. Drag the signature handles until it fits the signature area.
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