Validate Signed Documents with PDF Document Validator
If you're unsure whether your document has been signed with Addo Sign, you can use a validation tool to confirm the transaction, certificates, and sealing.
The validator gives you the confidence and clarity you need regarding a document’s signature status and validity.
You can access the PDF Document Validator here.
What is PDF Document Validator?
PDF Document Validator is a tool that verifies whether a signed document is valid and sealed with GlobalSign. It checks details about the transaction, the certificate, and the sealing process, helping you confirm if the document was signed and sealed correctly.
GlobalSign is used as the certificate authority. As a trusted provider of digital certificates, GlobalSign ensures documents are authentic, unchanged, and protected against tampering once sealed.
How does PDF Document Validator work?
The validation process is quick and simple:
Access the tool via this URL https://validatedoc.net/documentvalidator
Upload the PDF document you wish to validate by clicking the "Upload Document" button
The tool analyzes the document and generates a validation report
If the validator flags any warnings, such as hyperlinks, review the flagged content to ensure it matches the original document. This step helps confirm the document's integrity.
You’ll be able to see if the document is properly signed and whether the certificate used to seal it remains valid and intact.
Example of a successfully validated PDF
Below is an example of a PDF document that has been successfully validated after being signed using MitID:
Invalid signature
If a signature is not valid for any reason, or was not signed with Addo Sign, you'll instead see the following message and icon:
Other messages in Document Validator
Document Validator can also inform you about other content within the document you're validating.
Hyperlinks
If your signed document is valid but contains hyperlinks, Document Validator will notify you that even though the signature is valid, it isn't able to validate the content that the hyperlinks redirect to, as that content can be changed at any point by the content owner.
To ensure the signature's validity, compare the hyperlinks flagged by the validator with those present in the PDF. If they match, the signature remains valid, and the warning is likely due to the presence of external links rather than any modification of the signed content.
Supported Signature Methods
PDF Document Validator supports various signature types used with Addo Sign, including:
Efos
Freja
Freja+
FrejaOrg
FTN
MitID
MitID Erhverv
Norwegian BankID
OK-button
SITHS
Swedish BankID
Touchscreen
Who Can Use PDF Document Validator?
Anyone needing to verify the authenticity of a signed document can use this tool — including individuals, companies, and organizations. Whether you're receiving legal documents, contracts, or agreements, this service helps ensure their validity and trustworthiness.
With PDF Document Validator from Addo Sign, you can feel confident that your documents are correctly signed and sealed using secure, recognized certificates.
Managing Signing Links
When extending the active period of a transaction, it is important to understand how signing links behave:
Validity of Existing Signing Links:
If the transaction has not yet expired, the signing link sent to the signer’s email will remain active and functional during the extended period.
This ensures that signers can continue to access and complete the signing process without any interruptions.