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Open a .bdoc file online

BDOC is the Estonian digital signature format that preceded .asice. Drop a .bdoc file here to see its content and signatures.

Your file never leaves your deviceFree, no account

What is a .bdoc file?

BDOC (version 2.1) is a format for digitally signed files developed in Estonia and based on the ETSI standards ASiC-E and XAdES. Like .asice, a .bdoc file is a ZIP container holding the documents and a META-INF folder with the signatures.

BDOC comes in two profiles: BDOC-TM with a time-mark, where the signing time is proven by an OCSP validity confirmation, and BDOC-TS with a time stamp, which is essentially the same as ASiC-E. DigiDoc4 creates new containers as .asice, but existing .bdoc files can still be opened and their signatures remain valid.

BDOC (.bdoc)
File extension.bdoc
MIME typeapplication/vnd.etsi.asic-e+zip
SpecificationBDOC 2.1
StructureZIP archive: documents + META-INF with signatures
Signature formatXAdES with time-mark (BDOC-TM) or time stamp (BDOC-TS)
Used inEstonia; new containers are created as .asice

How to open a .bdoc file

  1. Choose the file

    Drop the file into the box on this page, or press the box and pick a file from your computer, phone or tablet.

  2. Read the documents

    The container is unpacked in your browser. PDF, Word, Excel, image and text files open in the preview straight away.

  3. Check signatures and download

    See each signer's name and signing time, and download the files one by one or all at once.

Opening the file on a computer and on a phone

Windows, macOS and Linux: open asiceviewer.com in a browser and drop the file onto the page. If you need an official validity confirmation, open the same file in the DigiDoc4 client too.

Android: open the page in Chrome and pick the file from Downloads, or install the ASiC-E Viewer app, which also opens files offline.

iPhone and iPad: save the attachment to the Files app, open asiceviewer.com in Safari and choose the file from there.

ASiC-E Viewer app icon

ASiC-E Viewer for Android

Open signed containers on your phone, even offline. See the signature details and export documents to PDF or Word.

  • Works offline
  • .asice · .bdoc · .edoc · .adoc · .p7s
  • Export to PDF and DOCX
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Questions about .bdoc files

Are .bdoc and .asice the same thing?

Almost. Both are ZIP containers based on the ASiC-E standard. The difference is the signature profile: BDOC with a time-mark is specific to Estonia, while .asice uses the internationally common time stamp.

Is an old .bdoc file still valid?

A correctly given digital signature does not expire. For an official validity check, open the file in the DigiDoc4 client.

How do I convert .bdoc to PDF?

BDOC is a container, not a document. Open it here and download the PDF or other file inside.

Other supported formats