Scanned PDF Optimization Benchmark.
| Document Type | Required Format & Size |
|---|---|
| Input File Type | Scanned PDF / Image-Based PDF |
| Image Downsampling Target | 150 DPI – 200 DPI Grayscale/Color |
| Average Size Reduction | 60% to 90% Compression Ratio |
| Processing Speed | < 3 Seconds via WebAssembly |
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Why scanned PDFs are so huge.
Physical documents scanned with home scanners or smartphone scanner apps capture millions of raw pixels per page. A single color scan at 600 DPI can produce a 5 MB to 10 MB file for just one page.
Zcompressor analyzes the image stream resolution, downsizes bloated raster dimensions, and applies efficient JPEG stream encoding to compress scanned PDFs rapidly.
Aapke documents aapke device par hi safe rehte hain.
Your scanned physical certificates and personal contracts never leave your screen.
Aksar Pooche Jaane Wale Sawal (FAQ).
Yes! Zcompressor processes multi-page scanned documents page by page in parallel WebAssembly threads without page count limits.