PPTX Theme Editor

Edit PowerPoint online — privately.

Drop in a .pptx, add brand colors, edit the theme palette, then download the updated file. No upload. No sign up. No install.

  • Your file never leaves your browser
  • Runs locally on your device
  • Fast, private, and secure

100% Private

All processing happens locally in your browser. Your file never leaves your device.

No Upload

We don't upload, store, or share your files. Ever.

No Sign Up

No accounts. No cookies. Aggregate analytics only.

Fast & Lightweight

Open your file and edit colors in seconds. Right in your browser.

Your File, Your Control

Download your updated presentation and keep it yours.

How It Works

1

Open Your File

Open a .pptx file directly in your browser.

2

Edit & Audit

Add and edit colors and fonts, swap media — and audit colors, fonts, masters, media, embeddings, and themes across the whole deck.

3

Download PPTX

Download your updated presentation. That's it.

Everything It Does

A private, browser-based editor and auditor for your PowerPoint deck.

Brand Kit

Assemble your palette once — theme slots and custom colors — then push it into every theme in your deck.

Colors

Edit the 12 theme color slots, named custom colors, and PowerPoint's recent-colors picker — all in one place.

Theme Fonts

Set heading and body typefaces — Latin, East Asian, and complex scripts — for every theme.

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Files

Browse and edit any XML part in the package, with file and zipped sizes.

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Media

Preview, swap, and download embedded images and video — with dimensions, size, and effective DPI.

Embeddings

Inspect embedded worksheets and OLE objects behind charts, and where they're used.

Color Audit

Every hex color across the deck — flag non-brand colors, spot theme variants, and replace in one click.

Font Audit

Find hardcoded typefaces anywhere in the deck and replace them or link them back to the theme.

Masters

See slide masters, their layouts, and which slides use each — plus unused layouts.

Graph Explorer

Visualize how themes, masters, layouts, slides, and media connect — as a flowchart.

Overview & Health

A dashboard of slides, masters, sizes, and health flags for the whole package.