How Client-Side PDF Compression Works (Zero Cloud Uploads)
PDF files often accumulate unnecessary file bloat from uncompressed embedded photos, duplicated font subsets, thumbnail caches, and revision history. Our PDF compressor analyzes the document object model, recompresses raster imagery using modern compression algorithms, and removes redundant overhead directly in your browser.
Because modern browsers support WebAssembly and HTML5 Canvas processing, file optimization runs locally on your device without sending any bytes across the network, guaranteeing 100% compliance with strict corporate data governance and GDPR regulations.
Compression Modes Explained
Choose the target level according to your distribution channel:
- High Quality (~20-25% reduction): Preserves 300 DPI image resolutions for printing and high-definition presentations.
- Recommended (~45-55% reduction): Standard 150 DPI optimization ideal for email attachments and desktop review.
- Small File (~70-80% reduction): Aggressive 72-96 DPI downscaling engineered to pass stringent government portal uploads (e.g. max 2 MB limits).
Practical Example
Example: Scanned 12-Page Contract with High-Res Images
Input:
Original Document: 14.8 MB | Mode: Recommended (Balanced)
Output / Result:
Compressed Document: 6.9 MB (Savings: -53%)
Text and signatures remain crystal clear while embedded scan DPI is normalized for instant email delivery.