What about embedded videos?

PPSX is the OOXML version of PowerPoint's slideshow format, introduced with Office 2007 alongside .pptx. Like its .pps predecessor, double-clicking launches the deck in presentation mode rather than the editor. The underlying structure is a ZIP archive containing XML, embedded media, and a manifest - the same internals as .pptx, just with a different content-type declaration. Converting to HEIC produces a static slide-per-image bundle in the compact HEVC-compressed format, ideal for archiving deck libraries at roughly half the storage JPG would need, or for reviewing slides natively on iPhones and iPads.

heic.now reads the OOXML package, parses each slide's XML to a layout tree, resolves embedded media (images, fonts, theme colours), and renders to HEIC at the slide's native aspect - typically 16:9 for decks built since 2013, 4:3 for older templates. Modern PowerPoint features like SmartArt, embedded charts, and morph transitions render to their final visual state, and HEIC's 10-bit colour keeps template gradient backgrounds free of the banding JPG introduces. Animations and slide transitions flatten, which is the expected behaviour for a still-image export.

Use cases include compliance teams archiving signed-off presentations as compact image bundles for audit trails, sales engineers carrying reference decks in Apple Photos, and training teams building slide libraries in iCloud. Note that LMS platforms, CMSes, and chat tools generally reject HEIC uploads - convert those slides via /heic-to-jpg before publishing. To produce a portable archive, pair the output with /heic-to-pdf. For editable text recovery, route a slide through /image-to-text.

Reasons to convert PPSX to HEIC usually come down to compatibility, file-size, or specific feature requirements. Common situations:

• An app or platform only accepts HEIC uploads.
• You need a feature unique to HEIC (e.g. transparency, vector scaling, animation, multi-page pages, etc.) that PPSX doesn't provide.
• You're optimising file size — modern formats often produce smaller files than the older format you started with.
• You need a single archival format across a project so files behave consistently in the same viewer.

1. Open the PPSX → HEIC tool on heic.now.
2. Drag your PPSX file onto the drop zone, or click Select files. You can drop a whole folder of files at once.
3. The output is fixed to HEIC. If the format supports extra options (page size, transparency background, quality, EXIF stripping), tweak them in the right-hand panel.
4. Click Convert. The job runs on our server and finishes in a few seconds for typical photos.
5. Download the result. Files stay in storage for 24 hours and are then permanently deleted.

The entire flow is free for the first 10 jobs per day with no signup required. A free account doubles that quota; a premium plan removes the limit entirely.

• Embed fonts in PowerPoint (File - Options - Save - Embed fonts) before saving the .ppsx so the HEIC matches your original styling.
• Use 16:9 widescreen for modern displays; 4:3 looks dated on most modern monitors and projectors.
• Resize images to slide dimensions inside PowerPoint before export to avoid blurry upscaling.
• If your deck uses morph transitions, only the end state renders - design with that in mind.
• Bundle the HEICs into a single PDF with /heic-to-pdf for the cleanest distribution format.