# How to open ASiC-E files: choose the method that fits your goal

> There are several correct answers to how to open ASiC-E files. Which one is right depends on what you want from the file: a quick read, an official check, your own signature or the documents inside.

Source: https://asiceviewer.com/en/blog/how-to-open-asice-files/
Published: 2026-11-10 · Digixy

## In short

- To read: a browser viewer is enough.
- To validate officially or to sign: use DigiDoc4.
- To extract documents: any viewer with a download button works.

## Start from your goal

| Your goal | Best method | Time needed |
| Read the document | [ASiCE Viewer](https://asiceviewer.com/en/#tool) in a browser | Under a minute |
| See who signed and when | Browser viewer or mobile app | Under a minute |
| Get an official validity verdict | DigiDoc4 client | A few minutes plus installation |
| Add your own signature | DigiDoc4 with ID-card, Mobile-ID or Smart-ID | A few minutes |
| Save the PDF from the container | Browser viewer, download button | Under a minute |
| Read on a phone without internet | [ASiC-E Viewer for Android](https://play.google.com/store/apps/details?id=com.digixy.asiceviewer&hl=en&referrer=utm_source%3Dasiceviewer.com%26utm_medium%3Dblog-md) | Under a minute |

## By platform

- **Windows:** browser viewer or DigiDoc4. Details in [ASiC-E viewer for Windows](https://asiceviewer.com/en/blog/asice-viewer-for-windows/).
- **macOS:** browser viewer in Safari or DigiDoc4 for Mac. See [ASiC-E viewer for Mac](https://asiceviewer.com/en/blog/asice-viewer-for-mac/).
- **Linux and Chromebook:** browser viewer; DigiDoc4 is available for Ubuntu.
- **Android:** browser or app. See [ASiC-E viewer for Android](https://asiceviewer.com/en/blog/asice-viewer-for-android/).
- **iPhone and iPad:** Safari with the Files app. See [ASiC-E viewer for iPhone](https://asiceviewer.com/en/blog/asice-viewer-for-iphone/).

## The universal method

Whatever the device, this works:

1. Save the `.asice` file where you can find it.
2. Open asiceviewer.com.
3. Drop or select the file.
4. Read the documents and the signature cards.

## Methods to avoid

- **Opening in a text editor.** The container is binary; you will see noise and may corrupt the file if you save.
- **Uploading to an unknown converter.** Contracts do not belong on a stranger's server.
- **Renaming to .pdf.** The file is not a PDF; renaming does not convert it.

## When the method fails

If no tool opens the file, the download was probably incomplete or the file is not a container at all. Compare its size with what the sender reports, download it again, and check the extension: `.cdoc` files are encrypted and need a different procedure. The step-by-step version is in our [opening guide](https://asiceviewer.com/en/how-to-open-asice-file/).

## Frequently asked questions

**What is the easiest way to open ASiC-E files?**

Dropping the file onto a browser-based viewer. It needs no installation and works on every device.

**Do I need different software for .bdoc or .edoc files?**

No. They use the same container structure, and the same viewers open them.

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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