Start from your goal
| Your goal | Best method | Time needed |
|---|---|---|
| Read the document | ASiCE Viewer 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 | Under a minute |
By platform
- Windows: browser viewer or DigiDoc4. Details in ASiC-E viewer for Windows.
- macOS: browser viewer in Safari or DigiDoc4 for Mac. See ASiC-E viewer for Mac.
- Linux and Chromebook: browser viewer; DigiDoc4 is available for Ubuntu.
- Android: browser or app. See ASiC-E viewer for Android.
- iPhone and iPad: Safari with the Files app. See ASiC-E viewer for iPhone.
The universal method
Whatever the device, this works:
- Save the
.asicefile where you can find it. - Open asiceviewer.com.
- Drop or select the file.
- 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.
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.