PPTX to MHT Converter
Processing entirely on your device — large files may take a moment.
PowerPoint Presentation and MHTML Web Archive exist for different jobs: PPTX is the modern PowerPoint format — a zip package of XML slides with text, shapes and media, editable in PowerPoint, Keynote, WPS and Google Slides. Convert MHT archives to PDF for clean printing, or extract the readable document from a saved page.
Because the whole conversion happens on your device, it is instant, unlimited and genuinely private — no accounts, no watermarks, no files on anyone's server. Multiple files are converted in one go.
How PPTX compares to MHT
| PPTX | MHT | |
|---|---|---|
| Structure | OOXML zip: slides + media | Tag semantics |
| Editability | Full fidelity in PowerPoint | Plain-text editable |
| Best for | Decks and slide content | Web pages and shareable documents |
How to convert PPTX to MHT
- 1
Select your files
Drag & drop your PPTX 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 PPTX format
PPTX is the modern PowerPoint deck: a zip of XML parts describing slides, shapes, text runs and media. That structure is exactly why text can be extracted faithfully without PowerPoint — every word on every slide is in the package, with its slide number.
One honest limit: extraction is about words, not looks. Slide layouts, backgrounds, animations and images do not survive a text export — the output is the content of the deck, not a picture of it.
+ Strengths
- ✓Text and slide order preserved exactly
- ✓Opens in PowerPoint, Keynote, WPS, Slides
- ✓Zip+XML structure is machine-friendly
! Limitations
- −Text export loses layout and visuals
- −Charts and tables flatten 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 PPTX to MHT?
Think of it as moving your file to the container that fits the job. Text export loses layout and visuals MHT works differently: Displays on every device with a browser If any of that sounds like your task, run the conversion — it takes seconds and nothing leaves your device.
Frequently asked questions
Is this PPTX 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 PPTX 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.
What about speaker notes?
The main extraction covers slide text; notes live in a separate part of the package and are not included in this export.
Will PPTX to MHT keep the slide order?
Yes — slides are read from the file in their real order and numbered, so the output follows the deck exactly.