Methodology
SecureCompress is optimized for scanned PDFs. Each page is rendered, normalized to a consistent size, and compressed with quality-aware tuning to hit your target size.
- •Target-size budgeting per page
- •Consistency in page dimensions to prevent visual jumps
- •Quality-first compression before resolution drops
- •Optional grayscale or black-and-white modes
Compression pipeline
1. Analyze
Inspect page count and dimensions.
2. Render
Rasterize pages at the chosen DPI.
3. Compress
Apply quality and mode optimizations per page.
4. Assemble
Rebuild the PDF and verify target size.
Performance benchmarks
Runtime
3–8 seconds per 10 pages at 200 DPI.
Reduction
70–95% for scanned PDFs with grayscale mode.
Target accuracy
Within 5% after multi-pass adjustment.
Best practices
Choose a realistic target
Very aggressive targets can reduce readability.
Try grayscale
Text-heavy scans compress better in grayscale.
Check your result
Review small text after compression.
Local-first privacy
Processing runs entirely on your device. We do not upload or store your PDFs. License verification sends only a license key and a device identifier.