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Convert PPTX to MHTML files online with our free presentation converter app. No matter your platform — Windows 10, Mac, Android or iPhone — you can convert PPTX files without losing quality.
Popular presentation file formats and apps help users create and share visual content. PPTX, used by Microsoft PowerPoint, supports text, images, and animations. Google Slides is web-based and allows real-time collaboration, often exported as PPTX or PDF. Apple Keynote uses the KEY format and is known for smooth visuals. PDF is also common for sharing presentations in a fixed layout.
Simply change PPTX to MHTML by uploading your file, choosing a target format, and clicking Convert. Your file will be ready to download in seconds, no registration required.
Check our videoPPTX is a file format used for creating and sharing presentations, developed by Microsoft as part of the Office Open XML specification. It is primarily used in Microsoft PowerPoint but is also supported by other presentation software like LibreOffice, Google Slides, and Apple Keynote. The format stores data in a compressed ZIP archive containing XML files for slides, media, and metadata, enabling advanced features like animations, transitions, and embedded multimedia.
MHTML (MIME HTML) is a web page archive format that combines HTML, images, scripts, and other resources into a single file for easy storage and sharing. It is supported by web browsers like Microsoft Edge and Internet Explorer, as well as tools such as email clients and web development software. The format uses MIME encoding to embed external resources directly into the file, enabling self-contained web pages with advanced features like CSS, JavaScript, and multimedia elements.
You can also convert PPTX into many other file formats. Please see the complete list below.