• Open PDFs: Click "+ Open PDFs" to load documents.
• Add Pages: Click "+ Add Page" on any page to add it to your export queue.
• Reorder Pages: Drag pages in the right sidebar to change their order for the final PDF.
• Reorder Files: Drag the tabs at the top to reorder open files.
• Draw/Annotate: Use the toolbar tools to Draw, Erase or Add Text. You can change colors and font sizes.
• Undo/Redo: Use the buttons or shortcuts (Ctrl+Z / Ctrl+Y).
• Export: Click "Download Merged PDF" in the sidebar to save your work.

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