基于 SOC 职业分类
用 Codex 或 Claude 帮你安装 复制这段 Prompt，粘贴到 Codex、Claude 或其他助手里，让它检查 Skill 页面并帮你完成安装。
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npx skills add https://github.com/johnalbertini14-glitch/openclaw-skills --skill pdf-compress命令会保持在同一行。复制前请横向滚动并检查完整内容。
想先保存到本地？可下载 SkillsMP 当前能够提供的文件。
正在显示 SKILL.md
Use this skill to create a Polymarket wallet for your agent and trade on prediction markets. Browse markets, place bets, manage positions — all without exposing private keys.
ClawSec suite manager with embedded advisory-feed monitoring, cryptographic signature verification, approval-gated malicious-skill response, and guided setup for additional security skills.
Automated daily security audits for OpenClaw agents with email reporting. Runs deep audits and sends formatted reports.
| name | PDF Compress |
| description | Reduce PDF file size while maintaining acceptable quality |
| author | claude-office-skills |
| version | 1.0 |
| tags | ["pdf","compression","optimization","file-size","performance"] |
| models | ["claude-sonnet-4","claude-opus-4"] |
| tools | ["computer","file_operations"] |
Reduce PDF file sizes for easier sharing, faster loading, and efficient storage.
This skill helps you:
"Compress this PDF to reduce file size"
"Make this PDF smaller for email"
"Optimize this PDF for web viewing"
"Compress this PDF to under 5 MB"
"Reduce file size by at least 50%"
"Optimize for minimum file size"
"Compress with high quality (minimal loss)"
"Compress for screen viewing"
"Maximum compression, quality not critical"
| Level | Target Use | Image Quality | Size Reduction |
|---|---|---|---|
| Minimum | Archival | Original | 5-15% |
| Low | Near original | 15-30% | |
| Medium | General use | Good | 30-50% |
| High | Email/Web | Acceptable | 50-70% |
| Maximum | Preview only | Reduced | 70-90% |
| Use Case | Recommended Level | Reason |
|---|---|---|
| Print production | Minimum/Low | Quality critical |
| Email attachment | Medium/High | Balance size/quality |
| Web download | High | Fast loading |
| Quick preview | Maximum | Speed priority |
| Archive | Low | Long-term quality |
| Presentation | Medium | Good on-screen |
## Image Compression Settings
### Resolution Reduction
| Target | DPI | Use For |
|--------|-----|---------|
| Screen | 72 | Web viewing |
| eBook | 150 | Digital documents |
| Print-basic | 200 | Office printing |
| Print-quality | 300 | Professional print |
| Original | N/A | No reduction |
### Format Conversion
| From | To | Savings | Quality Impact |
|------|-----|---------|----------------|
| TIFF | JPEG | 70-90% | Some loss |
| PNG | JPEG | 50-80% | Some loss |
| BMP | JPEG | 90%+ | Some loss |
| JPEG | JPEG (recompress) | 20-50% | Cumulative loss |
### Quality Levels
| Setting | JPEG Quality | Visual Impact |
|---------|--------------|---------------|
| Maximum | 90-100 | Imperceptible |
| High | 75-89 | Minimal |
| Medium | 50-74 | Noticeable on zoom |
| Low | 25-49 | Visible artifacts |
## Additional Optimizations
### Font Optimization
- [ ] Subset fonts (remove unused characters)
- [ ] Convert to standard fonts where possible
- [ ] Remove duplicate font instances
### Structure Optimization
- [ ] Remove unused objects
- [ ] Clean up metadata
- [ ] Linearize for web (fast web view)
- [ ] Remove bookmarks (optional)
- [ ] Remove comments/annotations (optional)
### Content Removal (Caution)
- [ ] Remove hidden layers
- [ ] Remove JavaScript
- [ ] Remove form fields
- [ ] Remove embedded files
## PDF Compression Report
### File Summary
| Metric | Before | After | Change |
|--------|--------|-------|--------|
| **File Size** | 45.2 MB | 8.7 MB | -81% |
| **Pages** | 120 | 120 | - |
| **Images** | 89 | 89 | - |
### Compression Applied
| Technique | Savings |
|-----------|---------|
| Image downsampling (150 DPI) | 28.5 MB |
| JPEG compression (75%) | 5.2 MB |
| Font subsetting | 1.8 MB |
| Object cleanup | 1.0 MB |
| **Total Savings** | **36.5 MB (81%)** |
### Quality Assessment
| Aspect | Rating | Notes |
|--------|--------|-------|
| Text clarity | ⭐⭐⭐⭐⭐ | No change |
| Image sharpness | ⭐⭐⭐⭐ | Slight softening |
| Color accuracy | ⭐⭐⭐⭐⭐ | Preserved |
| Zoom quality | ⭐⭐⭐ | Pixelation at 400%+ |
### Recommendations
✅ Suitable for: Email, web, screen viewing
⚠️ Not recommended for: High-quality print, archival
## Compression Strategy: [Document Name]
### Current State
- File size: 150 MB
- Pages: 200
- Issue: Too large for email (limit: 25 MB)
### Target
- Max size: 20 MB
- Maintain readability
### Recommended Approach
1. **Images**: Reduce to 150 DPI, JPEG 70%
- Expected savings: ~100 MB
2. **Fonts**: Subset embedded fonts
- Expected savings: ~5 MB
3. **Cleanup**: Remove metadata, optimize structure
- Expected savings: ~5 MB
### Expected Result
- Final size: ~20 MB
- Quality: Good for screen/general use
## Batch Compression Job
### Input
- **Folder**: /documents/reports/
- **Files**: 45 PDFs
- **Total Size**: 2.3 GB
### Settings
- Compression level: Medium
- Target: Email-friendly (<10 MB each)
- Image DPI: 150
- JPEG quality: 75%
### Progress
| File | Original | Compressed | Reduction |
|------|----------|------------|-----------|
| report_q1.pdf | 85 MB | 12 MB | 86% |
| report_q2.pdf | 120 MB | 18 MB | 85% |
| report_q3.pdf | 95 MB | 14 MB | 85% |
| ... | ... | ... | ... |
### Summary
| Metric | Value |
|--------|-------|
| Files processed | 45 |
| Total before | 2.3 GB |
| Total after | 380 MB |
| Average reduction | 83% |
| Files under 10 MB | 42/45 |
### Large Files (Need Review)
| File | Size | Recommendation |
|------|------|----------------|
| annual_photos.pdf | 25 MB | Split or higher compression |
| tech_diagrams.pdf | 18 MB | Reduce image count |
| charts_hires.pdf | 15 MB | Acceptable |
## Quality Comparison Guide
### Image Quality at Different Levels
**Original (300 DPI, no compression)**
- Sharp at all zoom levels
- File size: Large
**High Quality (200 DPI, JPEG 85%)**
- Sharp at 100-200% zoom
- Minor softening at high zoom
- File size: Medium-large
**Medium Quality (150 DPI, JPEG 70%)**
- Good at 100% zoom
- Noticeable softening at 200%+
- File size: Medium
**Low Quality (96 DPI, JPEG 50%)**
- Acceptable at 100%
- Pixelation visible
- File size: Small
### Text Remains Sharp
Note: Text (when vector) remains crisp at all compression levels.
Only embedded text images are affected.