SmartPDF — Intelligent PDF Editor

OCR-based PDF editor intended for working professionals, with features including:

• In-Place Text Editing
• Flattening ⇔ Unflattening Old Documents
• Interactables (Text, Checkboxes, Bubbles, Images, Signatures, Censors)
• Page Operations (Add, Rotate, Remove)
• Night Filter

Quickstart (Windows PowerShell)

1. Create and activate virtualenv (recommended):

python -m venv .venv; .\.venv\Scripts\Activate.ps1

2. Install dependencies:

pip install -r requirements.txt

3. Run the app:

python app.py

4. Open http://127.0.0.1:5000 in your browser.

Usage notes

• Upload a PDF using the file input.
• Use Prev/Next to navigate pages.
• Click toolbar actions to place annotations; double-click an annotation to delete it.
• Use the bottom-right handle to resize annotations and drag to move.
• Click "Save to PDF" to write the annotations into a new file uploads/annotated_<original>.pdf. A JSON file annotated_<original>.pdf.json will be written alongside the PDF to allow re-editing.

PDF.js is loaded from CDN by default. If your environment blocks the CDN, place pdf.js and pdf.worker.js into static/lib/ (see static/lib/README.txt). The app will try CDN first and then fall back to the local copy.

Automatic download (one-line)

If you want the script to fetch the files into static/lib/ for you, run this from the project root in PowerShell:

powershell -ExecutionPolicy Bypass -File .\scripts\download_pdfjs.ps1

After the script finishes, reload the app page in your browser. Security & production

• This is a demo. For production consider sanitizing filenames, enforcing auth, limiting upload sizes, and serving assets via a proper web server.