MHTML

archive

AKA MIME Encapsulation of Aggregate Documents, such as HTML. This entry was previously named 'Microsoft Web Archive', however MHTML is not specific to Microsoft. MHTML is described by the IETF standard RFC2557.

Identify it

Not sure your file is this? Identify it from its first bytes, in your browser.

Open it

• AbiWordOpen sourcewrites · GNU General Public License, version 2.0 or later
• SupermiumOpen sourcereads · 3-clause BSD License
• Microsoft Office Excel 2007writes
• Microsoft Office Publisher 2007reads and writes
• Microsoft Office Word 2007writes
• Microsoft PowerPoint 2007writes
• WPS Spreadsheet 2013reads and writes
• WPS Writer 2013reads and writes
• Microsoft Office Publisher 2003reads
• Operareads

Convert it

No conversion recorded. One of the tools above may export it; search for a chain.

Sources

• File Formats Wiki
• PRONOM x-fmt/429
• Wikidata Q954199

From Just Solve the File Format Problem (File Formats Wiki), PRONOM, Wikidata. Updated 2026-10-24.

Improve this record JSON