Customize asset processing, storage, and content workflows for your app.
Format-specific handling
Native support for images, videos, SVGs, and text with extensible APIs for custom formats like 3D models or CAD files. Ideal for domain-specific apps with specialized content handling beyond standard web formats.
Flexible content recognition
Register custom handlers that detect and transform any content type into application-specific shapes. Perfect for apps where pasted code becomes syntax-highlighted blocks or uploaded designs become interactive prototypes.
Extensible processing pipeline
Define custom validation, transformation, and optimization rules for each content type. Build specialized workflows like automatic image resizing, metadata extraction, or security scanning during content import.
Intelligent performance management
Customize viewport culling and asset optimization to handle large files, with size limits, progressive loading, and quality tweaks keeping the canvas responsive.
Skip asset complexity
Validate, transform, and store content your way. Our team spent years to get all the details right, so you don’t have to.
External content handler system
The content recognition engine routes dropped or pasted content through your registered handlers. Each handler gets typed content with metadata and context, then returns shape creation instructions. Handlers can be chained for complex workflows, with priority and fallback rules ensuring everything is processed correctly.
Asset storage architecture
The asset store interface abstracts storage operations behind a clean API that supports upload, resolution, and removal operations. Built-in implementations include base64 embedding for development and IndexedDB for offline applications. Custom stores integrate with cloud providers through simple async methods. The system handles temporary previews, upload progress tracking, and automatic failover scenarios.
Performance optimization layer
Viewport culling skips off-screen assets while keeping selected items editable. Uploads apply size and quality adjustments automatically, generating multiple representations for zoom and display contexts. Memory is optimized through garbage collection and smart caching.
Examples
See for yourself
Have a look at our examples on how to customize the UI.
Custom paste handler
Build specialized content recognition that transforms pasted material into domain-specific shapes with custom validation and processing.
Asset store configuration
Implement storage backends that integrate with existing infrastructure while providing transparent user experiences.
External content sources
Create handlers for custom file formats with automatic recognition, validation, and shape creation workflows.
Build with a starter kit
Production ready starter kit to add a chat to your canvas. Building something different?
Simplify asset handling
Support images, video, text, and custom content types without extra hassle.