Edit PDF

Core Features:

• PDF Upload & Display: Load and view PDF documents with page navigation
• Text Editing: Add custom text with font size, family, and color options
• Drawing Tools: Freehand drawing with adjustable brush sizes
• Shape Tools: Add rectangles, circles, triangles, lines, and arrows
• Image Insertion: Upload and add images to PDF pages
• Highlighting: Highlight text and content with semi-transparent overlay
• Eraser Tool: Remove individual annotations and objects

Advanced Features:

• Multi-page Support: Navigate between PDF pages with prev/next controls
• Zoom Controls: Zoom in/out for detailed editing (30% to 300%)
• Undo/Redo: Basic undo functionality with keyboard shortcuts
• Color Palette: Quick color selection with custom color picker
• Auto-save: Automatic saving of work in memory every 30 seconds
• Keyboard Shortcuts: Ctrl+Z (undo), Ctrl+Y (redo), Ctrl+S (save), Delete (remove selected)
• Touch Support: Mobile-friendly interface with touch controls
• Drag & Drop: Drop PDF files or images directly onto the canvas
• Export Options: Download edited PDF with all annotations preserved

Technical Implementation:

• PDF.js: For PDF rendering and display
• Fabric.js: For canvas-based editing and annotations
• PDF-lib: For PDF generation and export
• Responsive Design: Works on desktop, tablet, and mobile devices
• Modern UI: Glass-morphism design with smooth animations

Free Resources Used:

• All libraries loaded from CDNJS (completely free)
• Font Awesome icons for UI elements
• No premium services or APIs required
• Everything runs client-side in the browser

The tool provides a professional PDF editing experience with an intuitive interface. Users can upload a PDF, make various annotations and edits, and download the modified PDF with all changes preserved. The interface is modern and responsive, working well across different devices.