Where the Gamma watermark hides in each format
Gamma stores its badge differently depending on how you export. In PDF it is a corner image plus a gamma.app link on every page. In PPTX it is a shape on the slide layout and master. Neither is editable text.
PDF: one image and one link annotation per page
Every page of a Gamma PDF export carries its own badge image in the bottom-right, paired with a /Link annotation whose URI resolves to gamma.app or gamma.to. Because it is an image and not text, selecting it with the text cursor does nothing and searching the document for "Made with Gamma" returns no matches. A 40-page export contains 40 separate badge objects.
PPTX: one shape on the layout and master
A PowerPoint export puts the Gamma watermark on the slide layout and slide master rather than on individual slides. PowerPoint draws those layers but does not let you select them in Normal view, which is exactly why the Gamma watermark cannot be clicked, cannot be dragged, and survives Ctrl+A. It is usually a Picture shape with no text at all, carrying a gamma.app hyperlink.
The link target is the only reliable fingerprint
Wording changes, position shifts, and images look like other images. The hyperlink target does not: gamma.app and gamma.to are unambiguous. This tool keys on that target, treats the bottom-right corner as a secondary hint only, and never matches the bare phrase "Made with" — a slide reading "Made with love by the team" must survive untouched.
On free-tier exports the Gamma badge sits at 85-96% of the page
Measured on real free-plan exports, the Gamma badge anchors between roughly 85% and 96% across both axes. The corner test used here is looser than that, at 70%, so unusual page geometry still resolves correctly instead of failing silently.

