Free tool

E-signature verification: ADOC, ASiC-E and PDF

Upload a signed file and you will see whether the signature is valid, whether the document was changed after signing, and whether the signature is qualified. The check runs on the same validator Tvarka uses for its own documents. The file is never stored – it is checked and immediately deleted.

Signed file

Accepted: .pdf, .adoc, .asice, .sce, .bdoc, .asics, .ddoc. Size limit – 10 MB.

Check the signature Download transcript (PDF)

Which formats we check

We check signed PDFs (PAdES), ASiC-E containers (.asice, .sce, .bdoc) and ASiC-S (.asics) with XAdES or CAdES signatures, as well as Lithuanian ADOC and DDOC documents.

What the answer means

• The qualified signature is valid – the signature is valid and is equivalent to a handwritten one under Article 25 of eIDAS.
• The signature is valid but not qualified – the document is unchanged, but the signature does not meet the requirements for a qualified signature.
• The document was changed after signing – the file content no longer matches what was signed.
• The signature is invalid – the signature itself fails the check, for example the certificate was revoked or was not valid at the time of signing.
• No electronic signatures found in the file – the file is not signed, or the signature is not stored inside it.
• Could not be confirmed – a signature is present, but its validity could not be determined, most often due to missing certificate data.

PDF transcript

The "Download transcript (PDF)" button turns a verified ADOC, ASiC-E or PDF file into a transcript: the first page carries the file name, the verification result, a signature sheet (who signed, when, whether each signature is valid and qualified) and the list of documents in the container, followed by the document itself when it is a PDF. Print it or forward it to anyone who cannot open the container; the original remains the signed file. Free, the file is never stored.

ADOC viewing and verification

Upload an .adoc file: we verify every XAdES signature inside it against the ADOC-V1.0 specification, the signer certificate and the timestamp. The content, annexes and metadata open in the free ADOC reader, and a document you received can be signed in Tvarka Sign.

ASiC-E, BDOC and PDF signature verification

.asice, .sce and .bdoc containers, ASiC-S (.asics) and signed PDFs (PAdES) are verified by the same validator that checks Tvarka documents: the answer says whether the signature is valid, whether the document is unchanged since signing and whether the signature is qualified. Open the container itself in the ASiC-E reader.