# August 30, 2026 - Theme Builder

Visual theme customization with live PDF preview, undo/redo, code export, and shareable URLs.

> For the complete documentation index, see [llms.txt](/llms.txt). Markdown variants are available by appending `.md` to any URL or sending an `Accept: text/markdown` header. An agent skill is available at [/.well-known/agent-skills/site-skill.md](/.well-known/agent-skills/site-skill.md).



We shipped the Theme Builder — a visual editor for customizing PDF themes with live preview, instant feedback, and one-click code export.

### What's new [#whats-new]

* **Live PDF Preview** — See your theme applied in real time as you adjust colors, typography, spacing, and page settings
* **Theme Picker** — Browse and switch between 9 built-in [presets](/docs/themes) (Professional, Modern, Minimal, Executive, Corporate, Elegant, Vivid, Forest, Blueprint)
* **Undo / Redo** — Full history with keyboard shortcuts (⌘Z / ⌘⇧Z)
* **Code Export** — Copy the theme config as a JSON object or TypeScript preset to drop into your project
* **Shareable URLs** — Theme state is encoded in the URL hash so you can share an exact configuration with anyone
* **Base-specific routing** — Separate theme builders for [Takumi PDF](/theme-builder/takumi) and [Forme PDF](/theme-builder/forme)
* **Font preview** — See how your chosen body and heading fonts look at actual size before generating a PDF