Convert tnef to html

Download and install the latest version of Filestar.
Right click on one or more Tnef file(s) on your desktop and select Convert with Filestar.
Type convert to html in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i file.tnef -c "convert to html" (how).

Let your AI agent convert TNEF to HTML

Claude Code, Codex, Cursor and other agents can do this on your computer with Filestar. Your files stay on your machine.

Install Filestar and add it to your agents:

npm install -g filestar
filestarcli agent install

Or add it in one click:

Claude Code:

claude mcp add filestar -- npx -y [email protected] mcp

Then ask your agent:

“Convert the TNEF files in my Downloads folder to HTML”

Or run it yourself:

filestarcli -i file.tnef -c "convert to html"

Runs on your computer, so your files stay on it. Works on Windows, macOS and Linux. 50 free conversions with the npm install, no account needed.

Can my AI agent convert TNEF to HTML?

Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.tnef -c "convert to html" on your computer, so your files stay on it.

Using Filestar With AI Agents → · Download SKILL.md

What is the difference between .tnef and .html?

Name: Transport Neutral Encapsulation Format; Hypertext Markup Language File
Extension: .tnef; .html
Format: Text
Category: Email; Developer
Developer: Microsoft; World Wide Web Consortium (W3C)
Description: File generated by Microsoft Exchange email programs such as Outlook; appears as an email attachment for email clients that don't recognize Microsoft's proprietary TNEF format; may cause the text "application/ms-tnef" to appear in the email if the email client does not recognize Microsoft Exchange formatting.; An HTML file is a webpage coded in HTML that can be displayed in a web browser. It is used to format text, tables, images, and other content that is displayed on a webpage. HTML files are widely used on the web as most pages within static websites have an ".html" extension.
MIME Type: application/vnd.ms-tnef; text/html
Sample: sample.html
Wikipedia: .tnef on Wikipedia; .html on Wikipedia

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