Private PowerPoint editing

Edit PPTX theme colors without uploading the presentation.

PPTX Theme Editor is designed for decks that should stay on your device. The browser opens the PPTX package, makes color edits locally, and exports a new file when you are done.

Try the private editor Read the privacy page

What "no upload" means here

The tool uses browser APIs and local JavaScript libraries to read the PPTX file on your device. Your deck is not sent to an app server for processing, storage, conversion, or export.

Runs locally

The PPTX is opened and edited in your browser session.

No cloud processing

The editor does not need to upload your presentation to change colors.

No account required

Use the tool without creating a login or saving a deck to a workspace.

Good fit for sensitive presentation work

Client presentation cleanup where source decks should not be uploaded to a converter.
Internal templates with brand, roadmap, sales, or training content.
Quick color edits on a personal machine without installing desktop software.

Edit PowerPoint colors with the file still on your device.

Open the deck, update color values, and download the modified PPTX from the browser.

Open the editor