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Compress any PDF file for free. Reduce size by 50-90% without visible quality loss. No signup, no file size limit, no watermark. Your PDF processes in your browser — nothing uploads to any server.
Compress your PDF — drag and drop, instant results.
Compress PDF Free| Tool | Free? | Signup? | File Limit | Watermark? | Privacy |
|---|---|---|---|---|---|
| WildandFree | ✓ Free forever | ✓ No signup | ✓ No limit | ✓ None | ✓ Local — never uploaded |
| iLovePDF | ~Free tier (limited) | ✗ Required | 25MB free | ✓ None | ~Uploaded to servers |
| SmallPDF | ~2 free/day | ✗ Required | 5GB | ✓ None | ~Uploaded to servers |
| Adobe Acrobat Online | ~Free tier | ✗ Adobe account | 100MB | ✓ None | ~Uploaded to Adobe |
| Sejda | ~3 free/day | ✗ Required | 50MB / 200 pages | ✓ None | ~Uploaded to servers |
| PDF24 | ✓ Free | ✓ No signup | ✓ No limit | ✓ None | ~Uploaded to servers |
PDFs are containers holding multiple types of data. Compression targets each type:
| PDF Component | % of File Size | Compression Method | Typical Reduction |
|---|---|---|---|
| Embedded images | 60-90% | Recompress JPEG/PNG, reduce resolution | 50-80% |
| Fonts | 5-15% | Subset fonts (keep only used characters) | 30-60% |
| Metadata | 1-5% | Strip creation info, XMP data | 90-100% |
| Object streams | 5-10% | Deduplicate, recompress | 20-40% |
| Bookmarks/annotations | 1-3% | Flatten if not needed | 50-100% |
| PDF Type | Original Size | After Compression | Reduction |
|---|---|---|---|
| Scanned document (300 DPI) | 15-25MB per page | 1-3MB per page | 80-90% |
| Photo-heavy report | 50-100MB | 5-15MB | 70-85% |
| Text-only document | 500KB-2MB | 200KB-1MB | 30-50% |
| PowerPoint exported to PDF | 10-30MB | 3-8MB | 60-75% |
| Already compressed PDF | Any size | ~Same size | 5-10% |
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