Can I add a timestamp (TSA)?

No, this tool does not offer a TSA/timestamp option.

Which files can I sign with this tool?

You can sign only PDF files, and for this process you must upload your own .p12 or .pfx certificate file. Signing can be done with self-signed or institutional CA certificates.

Can I sign multiple PDFs at once?

Yes, in batch signing mode the same certificate and password are applied to all PDFs in the list sequentially. The signed documents are downloaded as a ZIP file.

Is there a limit for the file sizes I can upload?

Yes. The PDF to be signed can be at most 25 MB, and your certificate file can be at most 50 KB.

Are my certificate and password stored on the server?

No, your certificate and password are used only for signing, are not stored on the server, and are deleted immediately after the process. Your file is processed on the server.

Can I sign with a Turkish qualified e-signature (smart card or USB token)?

No, this tool does not support qualified e-signature hardware; signing is done only with your own .p12/.pfx certificate.

PDF Cryptographic Signature — Free Online

⏱️Files are processed on the server and automatically deleted after 24 hours. Processed under legitimate interest (Turkish KVKK art. 5).

Important: This tool signs with your own .p12/.pfx certificate (self-signed or organization CA) — shows as "signed document" in Adobe Reader. For legally qualified e-signatures in Turkey, a smart card / USB token is required; that cannot run server-side.

1. PDF to sign (max 25 MB)

Select or drop PDF

2. Certificate (.p12 / .pfx, max 50 KB)

Select .p12 / .pfx

Certificate passphrase

🔒 Certificate and passphrase are used only for signing — never stored, deleted right after.

3. Signature metadata (optional)

Signer name

Contact

Location

Reason

Was the conversion quality good?

Auto-deleted in 7 days

256-bit SSL

Support

Your files are encrypted with SSL and automatically deleted from our servers 7 days after processing.

📖 How to Use

Upload PDF

Drag-drop or click to select your files.

Pick options

Page range / quality / orientation as needed.

Process

Click — server completes the task in seconds.

Download

Get the result; files are deleted in 7 days.

Frequently asked questions

No, this tool does not offer visible/invisible signature selection or position/size adjustment.

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PDF Cryptographic Signature