PDF EDITOR

Feature Requirements

1. PDF upload
2. Sidebar Thumbnail View
3. Undo
4. Redo
5. Text Settings
6. Text Editing
7. Add signature
8. Draw line
9. Draw Circle
10. Draw box
11. Draw freehand
12. Eraser
13. Highlight
14. Upload image
15. Download
16. Pan
17. Fit Page
18. Print
19. Search
20. Page navigation

File Structure

Backend

backend/          # node, express, multer, pdf-lib
├── annotations/          # Annotations (JSON edits)
├── crons/                # cron jobs like file cleaning
│   ├── cleaner.js
├── node_modules/
├── uploads/
│   ├── 6c609954-b604-41e9-83a6-9b8e853d6009.pdf
│   ├── 8d409954-b604-41e9-83a6-9b8e853d6009.pdf
├── utils/                # Utility functions
│   ├── fileUtils.js
│   ├── pdfUtils.js
├── .gitignore
├── .filemap.bak.json     # file mapping info backup
├── filemap.json          # file mapping info
├── package-lock.json
├── package.json
└── server.js             # server starter

frontend/           # vite, vanilla html css js, tailwindcss, pdfjs-dist, fabric
├── editor/
│   ├── units/
│   │   ├── toolbar.js
│   │   ├── fileUpload.js
│   │   ├── state.js
│   ├── index.html
│   ├── index.css
│   ├── index.js
├── node_modules/
├── public/
│   ├── pdf.worker.min.mjs
│   ├── vite.svg
├── .gitignore
├── index.html
├── index.css
├── index.js
├── package-lock.json
├── package.json
└── vite.config.js