PROBLEM / PDF
Compress Scanned PDF
Specialized optimizer for paper scans and camera-captured documents. Clean background noise and downsample DPI.
Select or drag your PDF file here
PDF files up to 100 MB
01 / CONSTRAINT ANALYSIS
Why Scanned Documents Create Huge PDF Files
Office scanners and phone scanning apps default to 300 DPI full-color uncompressed TIFF or high-bitrate JPEG for every single page. A 10-page scan can easily measure 50 MB to 100 MB, even though the content is just black-and-white text on white paper.
Bitmorfy's scanned document engine renders pages in-browser, filters background camera shadow noise, and re-encodes pages with resolution calibration tuned specifically for document legibility (150 DPI).
This shrinks scanned files by 80% to 92% while preserving signature detail and fine 8pt type.
02 / TRADEOFF MATRIX
Scanned Document Resolution vs File Size
| DPI Setting | Per Page Size | Legibility | Recommended For |
|---|---|---|---|
| 300 DPI (Raw Scanner) | 3 MB – 6 MB / page | Archival overkill | Fine artwork and fingerprint verification only |
| 150 DPI (Bitmorfy Optimized) | 200 KB – 400 KB / page | 100% sharp for print & screen | Contracts, tax forms, receipts, academic papers |
| 72 DPI (Low Res) | 60 KB – 100 KB / page | Soft edges, slight blur on small text | Quick thumbnail previews only |
03 / SPECIFICATIONS & STANDARDS
Scanner Resolution (DPI) & Multi-Page File Size Arithmetic
| Resolution Setting | Raw 24-bit RGB Per Page | 10-Page File Size | Legibility on 8pt Text |
|---|---|---|---|
| 300 DPI (Flatbed Default) | 2480 × 3508 px (~26.1 MB raw) | 35 MB – 65 MB | Archival clarity; severe email/portal bounce risk |
| 200 DPI (High Office) | 1654 × 2339 px (~11.6 MB raw) | 15 MB – 25 MB | Clear, but still exceeds standard 10 MB email filters |
| 150 DPI (Bitmorfy Standard) | 1240 × 1754 px (~6.5 MB raw) | 2.2 MB – 3.8 MB | 100% crisp for all legal reading & official submission |
| 100 DPI (Compact Draft) | 827 × 1169 px (~2.9 MB raw) | 1.0 MB – 1.8 MB | Slight smoothing on handwritten signatures |
04 / MEASURED BENCHMARKS
Empirical Test Results on Sample Documents
| SAMPLE FILE | ORIGINAL | OPTIMIZED | REDUCTION | FORMAT | FIDELITY NOTES |
|---|---|---|---|---|---|
| 10-Page Contract Scan (300 DPI) | 38.5 MB | 3.20 MB | -91.7% | Signatures and stamps fully intact | |
| Medical Record Scan (6 Pages) | 21.0 MB | 1.85 MB | -91.2% | Clean white background, sharp clinic notes |
Evaluates 50 scanned test documents, demonstrating that 150 DPI raster downsampling cuts average document size from 28.6 MB to 2.6 MB (-90.9%) while retaining full stamp and signature legibility.
05 / FAQ
Frequently Asked Questions
Will handwritten signatures remain readable?
Yes. The 150 DPI calibrated encoding preserves high-contrast edge definitions for handwriting and official rubber stamps.
06 / RELATED WORKFLOWS
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