Sealed MHT archive
File type: Encoded and encrypted file
The .smht file extension is used by the Oracle sealing service for sealed MHT archives.
An SMHT file contains a protected MHT (MHTML) web archive. It is intended to be viewed with Unsealer.
File type category:
Encoded and encrypted file
Date updated: October 2, 2026
The SMHT file extension is associated with the Oracle sealing service, which protects sensitive data. An SMHT file stores a sealed MHT (MHTML) archive.
The file is designed to be opened through Unsealer, which is available for Microsoft Windows.
The SMHT format is tied to the Oracle sealing service and should not be treated as an ordinary, freely editable MHTML file.
Open an SMHT file with Unsealer on Microsoft Windows. Unsealer is the software associated with this sealed archive format.
Standard web browsers and MHTML viewers generally cannot open the protected file directly.
Programs for viewing smht files:
Microsoft Windows
Unsealer
Language