Open in Safari
- Open Safari and go to asiceviewer.com.
- Drag the
.asicefile from Finder or from the Mail attachment area onto the page. - Read the documents; signers are listed on the left.
Nothing is installed and Gatekeeper is not involved, because nothing is executed outside the browser.
From Apple Mail
Attachments in Mail can be dragged directly onto the Safari window. Alternatively, click the attachment's download arrow; it lands in Downloads, from where you can drag it.
Add the viewer to the Dock
On macOS Sonoma and later, choose File → Add to Dock in Safari. ASiCE Viewer becomes a standalone app with its own window and icon. In Chrome the equivalent is Install page as app in the menu.
DigiDoc4 on a Mac
The official client is available for macOS from id.ee and from the Mac App Store. After installation .asice files open with a double-click, and you can sign with an ID-card, Mobile-ID or Smart-ID. Card readers work over USB; many are USB-A, so newer Macs need an adapter.
Why Finder tricks fall short
| macOS feature | Result with .asice |
|---|---|
| Quick Look (space bar) | Generic icon, no preview |
| Preview | Cannot open the file |
Archive Utility on a .zip copy | Extracts the documents, no signature information |
| TextEdit | Unreadable binary text |
The Archive Utility route works as an emergency peek: duplicate the file, rename the copy to .zip, confirm the extension change and double-click.
Show extensions in Finder
Open Finder → Settings → Advanced and enable Show all filename extensions. Otherwise a container can look like a nameless document.
Set a default app
Select an .asice file, press Cmd+I, pick the application under Open with and click Change All.
iPhone and iPad alongside the Mac
Files saved to iCloud Drive on the Mac are available in the Files app on iPhone, where Safari can open them in the same viewer. See ASiC-E viewer for iPhone. If you also carry an Android device, there is the ASiC-E Viewer app.
Frequently asked questions
Does the viewer work on Apple silicon Macs?
Yes. It runs in the browser, so the processor type does not matter.
Can macOS Preview open .asice files?
No. Open the container in a viewer and download the PDF inside; Preview opens that.