SIGN ELECTRONICALLY: EASY. FAST. SIMPLE.
Use LuxTrust to sign your PDF documents
Good news! You can now use your LuxTrust digital identity to sign your PDF documents in just a few clicks.
Log in to the COSI Home Edition online platform with your usual LuxTrust device (Token, app, Scan, SmartCard or Signing Stick) or a Luxembourg eID card and sign your documents wherever you are!
2 free electronic signatures offered each month.
![](/sites/default/files/styles/image_with_content/public/2020-11/Page_signpdf_1b_0.png?itok=zbSOK7XS)
Sign your PDF document in 4 steps!
In COSI Home Edition, it is quick and easy to sign online any PDF document.
![](/sites/default/files/styles/list_item_image_120/public/2023-10/_picto_120x120px_1023_LuxTrust_compatible_luxtrust_0.png?itok=lj-ObV4c)
1. Connect with your LuxTrust identity
Use your LuxTrust credentials and device (Token, app, Scan, SmartCard ou Signing Stick) to connect to the platform.
![](/sites/default/files/styles/list_item_image_120/public/2023-10/_picto_120x120px_1023_LuxTrust_signature_simple.png?itok=xqcPexU9)
2. Upload your document to sign
Define a name for your e-signature session and click on “Upload document” (PDF format, up to 15 Mb).
![](/sites/default/files/styles/list_item_image_120/public/2023-10/_picto_120x120px_1023_LuxTrust_signature_electronique_3.png?itok=feotM62t)
3. Place your signature (optional)
Click on “Place your signature” to choose where you want your signature to appear in the document.
![](/sites/default/files/styles/list_item_image_120/public/2023-10/_picto_120x120px_1023_LuxTrust_solution_num_facile_a_installer.png?itok=kq9rB9fk)
4. Sign and download your document
Click on “Sign”, enter your credentials again and download your signed document.