Render-tag – A rich text renderer for the Canvas 2D API
Pure canvas 2D text rendering avoids slow SVG foreignObject overhead for rich text.

Another AI document editor when Notion, Coda, and Craft already solve this.
Teams building documentation with embedded diagrams and AI assistance
Notion AI · Coda · Craft
Lots of interesting and challenging problems when designing a document editor that allows many humans and agents to understand and edit simultaneously. Especially one that supports things like Mermaid diagrams and XYZ flow charts out of the box!
We're officially GA, would love for people to give it a shot and tell us what they think. Feedback is greatly appreciated! If people want more credit, shoot us a note ([email protected]), we're happy to support :)
Pure canvas 2D text rendering avoids slow SVG foreignObject overhead for rich text.
17KB zero-dependency Markdown parser with bidirectional HTML conversion.
Google Slides alternative where AI agents propose edits as diffs for human review.
Three-way merge for docs is clever, but Notion and GitBook already own collaborative editing.
Overleaf alternative with EU hosting when GDPR compliance matters.
Agent-first HTML publishing for a market that may not exist yet.