Compress PDF DocumentsMozJPEG WASM
Shrink bloated scanned PDFs to under 100KB for email attachments and web portals. 100% in-browser downsampler.
Drop any Video, Image, Audio, or PDF
100% In-Browser & Sovereign • Zero Cloud Egress
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Removes GPS coordinates, device serial numbers, camera model, and timestamps from JPEG/PNG headers before compression.
PDF DOWNSAMPLING ENGINE
COMPRESSION COMPLETE
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Target DPI Presets & Use Cases
Ideal for strict government portals, email attachments (Gmail, Outlook), and simple black-and-white scanned receipts.
Balanced visual clarity and compact size. Perfect for contracts, presentations, resumes, and multi-page invoices.
Maintains razor-sharp text and intricate diagrams while still eliminating uncompressed raster bloat.
Frequently Asked Questions
Our engine parses your PDF locally using pdf-lib and PDF.js WebAssembly. Embedded scanned pages are downsampled to your target DPI (72, 150, or 200) and re-compressed using MozJPEG WASM before generating a clean, compact PDF.
Yes. Selecting the 72 DPI (Extreme) preset applies aggressive image downsampling and Huffman optimization, typically shrinking multi-page scans from 15MB down to under 100KB.
Never. Processing happens 100% locally in your browser memory. No data is transmitted across the internet.
Your confidential legal, financial, or personal documents are never transmitted across the internet.
Mozilla MozJPEG algorithms intelligently optimize quantization tables for maximum visual fidelity per byte.
No slow upload bars. Large 50MB scans begin processing instantly from your local device disk.