Gamma Watermark Remover

A local web tool to strip the "Made with Gamma" branding from files exported from gamma.app free accounts — including PDF, PowerPoint (.pptx), Apple Keynote (.key), and PNG slide ZIP exports. It runs a FastAPI backend that parses the document structure to identify and remove specific watermark elements based on coordinates and object properties. - PDF: Scans pages using PyMuPDF (fitz) for images linked to the gamma.app domain located in the bottom-right corner. - PPTX: Uses python-pptx to parse the presentation. Since Gamma embeds the watermark in the Slide Layouts (masters) rather than individual slides, the script targets the master layouts to remove the branding globally. - Keynote (.key): macOS only. Uses AppleScript to drive the Keynote app — converts .key → .pptx, cleans watermarks, then converts back to .key. Requires Keynote to be installed. Tip: Keeping the Keynote app open in the background before starting the conversion is highly recommended; it speeds up the conversion process significantly and prevents potential macOS permission prompt blocks or startup timeout issues. - PNG ZIP / Folder: Processes ZIP archives (or extracted folders) of Gamma's PNG slide exports. Uses per-row background colour sampling to seamlessly paint over the bottom-right watermark badge on every slide image. - Batch-ready: Upload multiple files at once from the web UI. - Dark / Light mode: Toggle between themes; preference is saved locally. - Session history: Track your processed files within a browser session. Gamma Watermark Remover is the open-source project DedInc/gamma-ai-watermark-remover (https://github.com/DedInc/gamma-ai-watermark-remover) by DedInc, released under MIT. Ion packages it unmodified from commit 61690de5d75e, adding only a manifest, an icon and a start script.

Written by DedInc, published to Oikou by Ben Grande.

• ★ 173 stars on GitHub
• Licence: MIT
• Built from commit 61690de5d75e

View the repository on GitHub

Not rated. Nobody has said who this app is suitable for, so Personal Clouds and the Oikou app treat it as 18+.

Internet

It asks to reach these hosts, and no others:

• cdnjs.cloudflare.com
• fonts.googleapis.com
• fonts.gstatic.com
• unpkg.com

Personal Cloud tools

None. It uses nothing from your Personal Cloud beyond its own storage.

Notifications

It does not send push notifications.

Storage

Up to 512 MB on your Personal Cloud.

Its address

Works best with its own address. A Personal Cloud shared through Cloudflare can give it one; on a private Personal Cloud on Tailscale it opens under your Personal Cloud’s address, where it may not work fully. Private and shared Personal Clouds

Sign in to add this web app to a Personal Cloud of yours. It runs there, on your own computer, and you open it from there; nothing is installed on your phone.

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