|
3 | 3 | ## 📋 Development Task |
4 | 4 |
|
5 | 5 | ### Task Description |
6 | | -Implement functionality to convert PDF pages to individual image files with support for different formats, quality settings, and page range selection. |
| 6 | +Implement functionality to convert PDF pages to PNG images using poppler-utils command-line tool. This feature provides a simple, one-click conversion with minimal user configuration required. |
7 | 7 |
|
8 | 8 | ### Acceptance Criteria |
9 | | -- [ ] Convert PDF pages to PNG/JPG images |
10 | | -- [ ] Support custom resolution and quality settings |
11 | | -- [ ] Allow page range selection (e.g., pages 1-5, or specific pages) |
| 9 | +- [ ] Convert PDF pages to PNG images (standardized format) |
| 10 | +- [ ] Use poppler-utils (pdftoppm) as conversion engine |
| 11 | +- [ ] Detect and guide users to install poppler-utils if not available |
12 | 12 | - [ ] Batch process multiple PDF files |
13 | | -- [ ] Maintain original page proportions and quality |
| 13 | +- [ ] Use standard settings (300 DPI, PNG format) for optimal quality |
14 | 14 | - [ ] Add progress tracking for multi-page conversions |
15 | | -- [ ] Support different output formats (PNG, JPG, WebP) |
16 | 15 | - [ ] Create organized folder structure for output images |
17 | | -- [ ] Add configuration options for image settings |
| 16 | +- [ ] Cross-platform installation detection (Windows, macOS, Linux) |
18 | 17 |
|
19 | 18 | ### Technical Requirements |
20 | | -- Integrate PDF rendering library (`pdf2pic`, `pdf-poppler`, `pdf.js`) |
21 | | -- Implement page range parsing and validation |
22 | | -- Add image quality and format options |
| 19 | +- Use poppler-utils (pdftoppm command) for PDF to image conversion |
| 20 | +- Implement tool availability detection across platforms |
| 21 | +- Provide clear installation guidance for missing tools |
| 22 | +- Handle command execution with proper error handling |
23 | 23 | - Support batch processing with progress tracking |
24 | | -- Handle large PDF files efficiently (memory management) |
25 | | -- Cross-platform compatibility (Windows, macOS, Linux) |
| 24 | +- Create organized output folder structure |
| 25 | +- Maintain cross-platform compatibility (Windows, macOS, Linux) |
26 | 26 |
|
27 | | -### Implementation Notes |
28 | | -1. **Library Evaluation**: |
29 | | - - `pdf2pic`: Node.js wrapper for GraphicsMagick/ImageMagick |
30 | | - - `pdf-poppler`: Node.js wrapper for Poppler PDF utilities |
31 | | - - `pdf.js`: Mozilla's PDF rendering library |
32 | | - - Consider bundle size and dependencies |
33 | | - |
34 | | -2. **Configuration Options**: |
| 27 | +### Implementation Strategy |
| 28 | +1. **Tool Detection System**: |
35 | 29 | ```typescript |
36 | | - interface PDFToImageOptions { |
37 | | - format: 'png' | 'jpg' | 'webp'; |
38 | | - quality: number; // 1-100 for JPG |
39 | | - density: number; // DPI (72, 150, 300) |
40 | | - pageRange?: string; // "1-5", "1,3,5", "all" |
41 | | - outputDir?: string; |
42 | | - prefix?: string; // filename prefix |
| 30 | + interface ToolAvailability { |
| 31 | + isInstalled: boolean; |
| 32 | + version?: string; |
| 33 | + installationGuide: string; |
43 | 34 | } |
44 | 35 | ``` |
45 | 36 |
|
46 | | -3. **Page Range Parsing**: |
47 | | - - "all" - convert all pages |
48 | | - - "1-5" - convert pages 1 through 5 |
49 | | - - "1,3,5" - convert specific pages |
50 | | - - "1-3,7,10-12" - mixed ranges |
| 37 | +2. **Standard Conversion Settings**: |
| 38 | + - Format: PNG (best quality, transparency support) |
| 39 | + - Resolution: 300 DPI (high quality for text and images) |
| 40 | + - Color space: RGB |
| 41 | + - Compression: Standard PNG compression |
| 42 | + |
| 43 | +3. **Command Template**: |
| 44 | + ```bash |
| 45 | + pdftoppm -png -r 300 input.pdf output_prefix |
| 46 | + ``` |
| 47 | + |
| 48 | +4. **Installation Guidance**: |
| 49 | + - **macOS**: `brew install poppler` |
| 50 | + - **Windows**: Download portable version or use package manager |
| 51 | + - **Linux**: `sudo apt-get install poppler-utils` (Ubuntu/Debian) |
51 | 52 |
|
52 | | -4. **File Naming Convention**: |
53 | | - - Single page: `document_page_001.png` |
54 | | - - Multiple PDFs: `document1_page_001.png`, `document2_page_001.png` |
55 | | - - Custom prefix: `{prefix}_page_{number}.{ext}` |
| 53 | +5. **File Naming Convention**: |
| 54 | + - Single PDF: `document-01.png`, `document-02.png` |
| 55 | + - Multiple PDFs: `document1-01.png`, `document2-01.png` |
56 | 56 |
|
57 | | -5. **Output Organization**: |
| 57 | +6. **Output Organization**: |
58 | 58 | ``` |
59 | 59 | pdf_images/ |
60 | 60 | ├── document1/ |
61 | | - │ ├── page_001.png |
62 | | - │ ├── page_002.png |
| 61 | + │ ├── document1-01.png |
| 62 | + │ ├── document1-02.png |
63 | 63 | │ └── ... |
64 | 64 | └── document2/ |
65 | | - ├── page_001.png |
| 65 | + ├── document2-01.png |
66 | 66 | └── ... |
67 | 67 | ``` |
68 | 68 |
|
69 | 69 | ### Testing Requirements |
70 | | -- [ ] Image quality validation tests |
71 | | -- [ ] Page range parsing tests |
| 70 | +- [ ] Tool detection on all platforms (Windows, macOS, Linux) |
| 71 | +- [ ] Command execution and error handling tests |
| 72 | +- [ ] Installation guidance verification |
72 | 73 | - [ ] Performance tests with large PDFs (100+ pages) |
73 | | -- [ ] Memory usage optimization tests |
| 74 | +- [ ] Batch processing functionality tests |
74 | 75 | - [ ] Cross-platform compatibility tests |
75 | | -- [ ] Error handling for corrupted PDFs |
| 76 | +- [ ] Error handling for corrupted PDFs and missing tools |
76 | 77 |
|
77 | 78 | ### Dependencies |
78 | | -- PDF rendering library (research and selection needed) |
79 | | -- Image processing utilities |
80 | | -- Page range parsing utilities |
| 79 | +- poppler-utils (external command-line tool) |
| 80 | +- Child process execution utilities |
81 | 81 | - File system operations |
82 | 82 | - Progress tracking integration |
| 83 | +- Cross-platform path handling |
| 84 | + |
| 85 | +### User Experience Flow |
| 86 | +1. User selects PDF file(s) for conversion |
| 87 | +2. Extension checks if poppler-utils is installed |
| 88 | +3. If not installed, show installation guide with platform-specific instructions |
| 89 | +4. If installed, proceed with conversion using standard settings |
| 90 | +5. Show progress bar for multi-page documents |
| 91 | +6. Display completion message with output location |
| 92 | + |
| 93 | +### Benefits of Simplified Approach |
| 94 | +- **Zero Configuration**: No options to confuse users |
| 95 | +- **Consistent Output**: All images use optimal settings |
| 96 | +- **Faster Development**: No complex UI for options |
| 97 | +- **Better Reliability**: Single tested configuration |
| 98 | +- **Easier Maintenance**: Fewer edge cases to handle |
83 | 99 |
|
84 | 100 | ### Related Issues |
85 | 101 | - Part of Advanced Document Processing v0.2.0 |
86 | 102 | - Should integrate with existing PDF text conversion |
87 | | -- May share PDF parsing infrastructure |
| 103 | +- Share tool detection infrastructure with other converters |
88 | 104 |
|
89 | 105 | ### Estimated Effort |
90 | 106 | - [x] 1-2 weeks |
91 | 107 | - [ ] 2+ weeks |
92 | 108 |
|
93 | 109 | **Breakdown**: |
94 | | -- Library research and evaluation: 2-3 days |
95 | | -- Core conversion implementation: 3-4 days |
96 | | -- Page range and options handling: 2-3 days |
97 | | -- UI integration and testing: 2-3 days |
| 110 | +- Tool detection system implementation: 2-3 days |
| 111 | +- Core conversion command execution: 2-3 days |
| 112 | +- Installation guidance and UI: 1-2 days |
| 113 | +- Testing and cross-platform validation: 2-3 days |
98 | 114 |
|
99 | 115 | ### Priority Level |
100 | 116 | - [ ] Critical |
101 | | -- [ ] High |
102 | | -- [x] Medium |
| 117 | +- [x] High |
| 118 | +- [ ] Medium |
103 | 119 | - [ ] Low |
104 | 120 |
|
105 | 121 | ### Labels |
106 | | -`enhancement`, `feature-request`, `development`, `v0.2.0`, `pdf`, `image-conversion` |
| 122 | +`enhancement`, `feature-request`, `development`, `v0.2.0`, `pdf`, `image-conversion`, `poppler-utils` |
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