# ASiC-E Extractor: save every file from a container with one click

> An ASiC-E extractor does one job: it takes the documents out of a signed container and puts them where your other programs can use them.

Source: https://asiceviewer.com/en/blog/asice-extractor/
Published: 2026-11-10 · Digixy

## In short

- Single file: the download icon next to its name.
- Everything: **Download all (ZIP)**.
- Extracted files are identical to the signed ones, with original names.

## Extracting one file

Open the container in [ASiCE Viewer](https://asiceviewer.com/en/#tool). Each row in the file list has a download icon on the right. Click it and the browser saves that document under its original name.

## Extracting everything

Above the file list, **Download all (ZIP)** packs every document into one ordinary ZIP archive. The technical files (`mimetype`, `META-INF`) are left out, so the archive contains exactly what a person would call "the documents".

## What you get

| Property | Result |
| Content | Byte-identical to the signed file |
| File name | Preserved, including õ, ä, ö, ü, š, ž |
| Folder structure | Preserved in the ZIP |
| Signatures | Not included; they stay in the container |

## Extraction and integrity

Because the viewer has already compared each file with its digest in the signature, an extracted file from a container marked "Integrity OK" is exactly what the signers approved. If a file is flagged as changed, extract it knowing that it differs from the signed version.

## Nested containers

Sometimes a container holds another container, most often a `.ddoc` inside an `.asics`. The extractor offers two choices for such a file: download it as it is, or press **Open container** to step inside and extract the documents from the inner one.

## Extracting from other signed formats

- **BDOC, EDOC, ADOC:** identical procedure; they are ZIP-based.
- **DDOC:** documents are stored as Base64 text inside XML. The extractor decodes them back into real files.
- **P7M:** the wrapped document is pulled out of the signature.

## After extraction

Remember what the files are: copies for working with. For a record of who signed, keep the container alongside them. A tidy folder might look like `contract.asice` plus an `extracted` subfolder.

## On a phone

On Android, the [ASiC-E Viewer app](https://play.google.com/store/apps/details?id=com.digixy.asiceviewer&hl=en&referrer=utm_source%3Dasiceviewer.com%26utm_medium%3Dblog-md) saves any document from a container to a location you choose, and nothing is written without your confirmation. Manual ways to extract, including command-line ones, are described in [extract files from ASiC-E](https://asiceviewer.com/en/blog/extract-files-from-asice/).

## Frequently asked questions

**Does extracting change the container?**

No. The container is read only; the extracted files are new copies.

**Why is the ZIP from "Download all" smaller than the container?**

It contains only the documents. Signatures and technical files are not included.

---

Open your .asice file now: https://asiceviewer.com/en/
ASiC-E Viewer on Google Play: https://play.google.com/store/apps/details?id=com.digixy.asiceviewer