MSG to MHT Converter
Processing entirely on your device — large files may take a moment.
Convert MHT archives to PDF for clean printing, or extract the readable document from a saved page. If your files are still in MSG format, this page is the shortcut: MSG is Outlook's saved-email format: an OLE compound file holding headers, the HTML/plain body, recipients and attachments. It only opens properly inside Outlook — everywhere else it is a black box.
iLoveConverter processes everything locally on your computer, which makes it private and fast: no upload wait, no server storage, no limits. Add as many files as you like — batch conversion is built in.
How MSG compares to MHT
| MSG | MHT | |
|---|---|---|
| Layout | As saved in Outlook | Flowing, CSS-controlled |
| Editability | Outlook only (natively) | Plain-text editable |
| Structure | OLE compound document | Tag semantics |
| Best for | Archived Outlook correspondence | Web pages and shareable documents |
How to convert MSG to MHT
- 1
Select your files
Drag & drop your MSG files onto the area above, or click to browse. You can add multiple files at once for batch conversion.
- 2
Convert instantly
Click "Convert to MHT". The conversion runs entirely inside your browser using WebAssembly — no upload, no queue, no waiting.
- 3
Download results
Download each converted MHT file individually, or grab everything at once as a ZIP archive.
About the MSG format
A .msg file is Outlook's saved email: an OLE compound document that stores headers, the HTML or plain-text body, recipients, flags and attachments. It opens cleanly only inside Outlook itself — everywhere else, including most web mail tools, it is an opaque binary.
Converting MSG to HTML or TXT puts the correspondence where people can actually read it — archives, discovery tools, CRM imports. Converting to EML hands it to every other mail client, which all speak the open RFC-822 standard instead of Outlook's container.
+ Strengths
- ✓Preserves Outlook-only correspondence
- ✓Body, headers and attachment names survive
- ✓EML output opens in Thunderbird and every client
! Limitations
- −Attachments are listed but not extracted here
- −Outlook-specific flags and categories are lost
- −Complex RTF bodies may simplify to text
About the MHT format
HTML is the markup language of the web itself. A document is plain text decorated with tags that describe structure — headings, paragraphs, lists, links, tables, images — and browsers turn that structure into a rendered, styled page. It is both a format and a program target: CSS styles it and JavaScript makes it interactive.
As a document format, HTML's strength is universality: any device with a browser displays it, text stays selectable and searchable, and links make it navigable. Its weakness is that rendering depends on the surrounding CSS and viewport, so it is a flowing document, not a fixed-layout one — printing or archiving an HTML page is inherently an approximation.
+ Strengths
- ✓Displays on every device with a browser
- ✓Semantic structure: headings, links, tables, media
- ✓Text remains selectable, searchable and accessible
! Limitations
- −Final look depends on CSS and viewport
- −Not a fixed-layout or print format
- −Untrusted HTML must be sanitized before display
Why convert MSG to MHT?
There is a concrete reason this conversion exists: Attachments are listed but not extracted here MHT sidesteps that — Displays on every device with a browser If that is your situation, the tool above settles it in seconds, entirely on your device.
Frequently asked questions
Is this MSG to MHT converter really free?
Yes — completely free, with no sign-up, no watermark and no daily conversion limits. The site is supported by advertising.
Are my files uploaded to a server?
No. The conversion runs entirely inside your browser using WebAssembly, so your files never leave your device — that is what makes it instant and private.
Does it work on Windows, Mac, iPhone and Android?
Yes. Anything with a modern browser works: Windows, macOS, Linux, Android and iOS. No software installation is required.
Is there a file size limit for MSG to MHT?
The only limit is your device's memory, since nothing is uploaded. Files up to a few hundred megabytes work fine on a modern desktop browser; very large files simply take a little longer.
Does the conversion work offline?
Yes. Once the page has loaded, the conversion itself runs entirely inside your browser — you can even disconnect and keep converting. No file ever touches a server.
Will the layout of my MSG file be preserved exactly?
This converter renders your MSG content into MHT with pages, proportions and images kept as close to the original as the target format allows. Use the preview before downloading to confirm it looks the way you expect.