Gamma Migration Deep Dive

Overview
Prerequisites
Instructions
Output
Error Handling
Examples
Resources

Overview

Comprehensive guide for migrating presentations and workflows from PowerPoint, Google Slides, Canva, and other platforms to Gamma with validation and rollback support.

Prerequisites

Gamma API access
Source platform export capabilities
Node.js 18+ for migration scripts
Sufficient Gamma storage quota

Instructions

Step 1: Inventory Source Presentations

Scan source directories for .pptx, .pdf, and .key files. Generate a JSON inventory with metadata (title, size, source platform, last modified).

Step 2: Build Migration Engine

Create a migration engine with concurrent batch processing, retry logic, and progress reporting. Use PQueue for concurrency control.

Step 3: Handle Platform-Specific Exports

Google Slides: Export via Drive API as .pptx, then import to Gamma
PowerPoint: Extract metadata from docProps/core.xml before import
Canva/Keynote: Export as .pptx first, then import

Step 4: Validate Migrated Presentations

Verify each migrated presentation has slides, all assets loaded, and can export.

Step 5: Create Rollback Snapshots

Save source-to-Gamma ID mappings as snapshots. If migration fails, delete Gamma copies.

See detailed implementation for advanced patterns.

Output

Migration inventory JSON
Batch migration with concurrency control
Platform-specific import handlers
Validation and rollback support

Error Handling

Issue	Cause	Solution
Import timeout	Large file size	Increase timeout to 120s
Asset missing	Embedded fonts/media	Re-export with embedded assets
Format mismatch	Unsupported features	Export as PDF fallback

Examples

Supported Migration Paths

Source	Format	Fidelity	Notes
PowerPoint	.pptx	High	Native import
Google Slides	.pptx export	High	Export first
Canva	.pdf/.pptx	Medium	Limited animations
Keynote	.pptx export	High	Export first
Markdown	.md	High	Structure preserved

gamma-migration-deep-dive