One renderer
The editor and the PNG export draw with the same code.
Coming soon Open source on GitHub
template-kit
An SDK for embedding a social-image template editor in your app. Templates are JSON, and --tk-* CSS variables restyle the editor.
theme.cssNo. 01
Theme · pick a chip
Playground · edit a template by hand, or watch an agent turn
Speed card · your template
double-click text to edit · Shift skips snap
template.json
Launch card · starter template
Agent
example turn
A scripted replay: no AI runs in this page
template.json
What's in the kit
Exact undo
Every edit is an op with an inverse.
Bring your own AI
Your own agent CLI, like Claude Code or Codex, creates and edits templates through the kit's undoable edits. Watch an example turn.
Any framework preview
Mount it in any page. No UI framework needed.
Not released yet
template-kit lives inside Afterword today. It ships as its own package once the template format is stable at v1.