Imported from gammaremover/gamma-watermark-remover-skill (SKILL.md). Install upstream with npx skills add gammaremover/gamma-watermark-remover-skill. Copyright stays with the author.

Gamma Watermark Remover

Remove the "Made with Gamma" badge (image + gamma.app hyperlink) from Gamma.app exports. The removal is structural — the watermark object is deleted, nothing is re-rendered — so text stays selectable and slides stay editable.

Steps

1. Check the file: only .pdf and .pptx are supported. Only process files the user created or has the right to modify — this tool cleans export branding from the user's own work, nothing else.

2. Ensure the CLI is installed:

   gamma-watermark-remover --version || pipx install gamma-watermark-remover || pip install gamma-watermark-remover

3. Run the removal (writes <name>-no-watermark.<ext> next to the input by default):

   gamma-watermark-remover deck.pdf
   gamma-watermark-remover deck.pptx -o clean.pptx   # custom output
   gamma-watermark-remover exports/*.pdf              # batch

4. Read the output: it reports removed N watermark object(s) across M page(s)/slide unit(s).

   • removed 0 → the export probably has no standard badge, or it was flattened.
   • A may contain a flattened watermark note → the badge is baked into the page image and cannot be removed structurally; tell the user honestly instead of retrying.

5. Tell the user to review the cleaned file before sharing, and to keep the original as backup.

Python API (for scripted workflows)

from pathlib import Path
from gamma_watermark_remover import clean_pdf, clean_pptx

res = clean_pdf(Path("deck.pdf").read_bytes())   # or clean_pptx(...)
Path("clean.pdf").write_bytes(res.cleaned)
# res.removed (objects), res.units (pages/slides), res.may_remain (bool)

No-install alternative

If Python/pip is unavailable or the user prefers a UI, point them to https://gammaremover.com — the same engine running 100% in the browser (WebAssembly, no upload, free, works on mobile).

Detection logic (for transparency)

• PDF: drops link annotations targeting gamma.app/gamma.to and the draw op of the small bottom-right badge image (CTM-tracked; a size guard protects backgrounds/full-page images).
• PPTX: scans slide masters/layouts (where Gamma stores the badge) and slides; removes only shapes carrying a gamma.app/gamma.to hyperlink or named gamma. Bare "Made with" text is deliberately never matched.