first commit

README.md

@@ -0,0 +1,34 @@
+# Timelineifyer
+
+A lightweight, browser-based timeline creation and visualization tool. No install, no build step — just open `index.html`.
+
+## Features
+
+- Create and manage multiple timelines
+- Add events with dates, titles, descriptions, URLs, categories, and thumbnail images
+- Color-coded categories for organizing events
+- Zoom controls and compact/full date format toggle
+- Export timelines as SVG or PNG (suitable for PowerPoint)
+- Import/export timelines as JSON for backup and sharing
+- Fullscreen presentation mode with keyboard navigation
+- Light/dark theme
+- All data persisted in browser localStorage
+
+## Usage
+
+Open `index.html` in any modern browser. No server or dependencies required.
+
+### Keyboard Shortcuts (Presentation Mode)
+
+| Key | Action |
+|-----|--------|
+| `P` | Toggle presentation mode |
+| `←` / `→` | Navigate between events |
+
+## Data Storage
+
+Timelines are saved to `localStorage` under the key `timelineifyer`. Use the JSON export feature to back up or share your timelines.
+
+## Tech Stack
+
+Pure HTML5, CSS3, and vanilla JavaScript — no frameworks or external dependencies.