PPTX forensics

PowerPoint's OOXML container — .pptx (plus the macro-enabled .pptm) — is structurally similar to DOCX: a ZIP archive with slide XML parts, a master/layout structure, a media folder, and metadata in docProps/.

PPTX is a common submission format for project decks, lab presentations, and capstone reports.

Signals available on PPTX

Metadata — same set as DOCX: Creator / Last modified by / Created / Modified / TotalTime / Slides / Words / Application / AppVersion / Template.
Slide-shape inventory — every slide's layout reference, text-frame inventory, and embedded-object list.
Template residue — Office "design ideas" suggestions leave traces; assignment-specific master decks leave a distinctive structural fingerprint.
Embedded objects — images, charts, embedded spreadsheets/Word documents. Each carries its own metadata channel.
Speaker notes — the notes pane is a separate text region that linguistic detectors run on.
Structural — ZIP-entry inventory and export-source fingerprint (PowerPoint vs. Google Slides export vs. LibreOffice Impress).

Common false-positive paths

Google Slides → PPTX export trips export-source flags similarly to Docs → DOCX. Common in classes that mandate a PPTX submission but allow Slides authoring.
Apple Keynote → PPTX export sets Application to PowerPoint while the ZIP shape says Keynote. Same confusion as Pages → DOCX.
Template-baked elements look like reused content (because they are) — but reusing the class template isn't academic dishonesty.

What's distinctive about PPTX review

Decks blend authored text with inherited template content more than essays do. Reviewers should:

Focus on the content-bearing text frames (the slide bodies), not the master/layout text.
Pay attention to speaker notes, which students often forget to clean and may carry residue from the source they pasted from.
Check embedded objects — a deck with an embedded Word document brings DOCX-level metadata along for the ride.

What to expect

A typical authored deck surfaces:

Full deck metadata.
A slide-by-slide inventory with text-frame contents.
Speaker-notes content scored with the same linguistic detectors as essay body text.
Embedded-object metadata flattened up to the deck level.

Open the Triage Report in Autotend Forensics for the full slide-by-slide breakdown.