Compress PDF — Free, Fast & Private
Large PDFs are a common problem — scanned documents, image-heavy reports, and presentation exports often exceed email size limits. MiniPx reduces PDF file size by optimizing the images embedded within the document.
The process works by extracting images from your PDF, compressing them with adjustable quality settings, and reconstructing the document. Text and vector elements remain untouched — only raster images are optimized.
This approach is especially effective for scanned documents, which are essentially full-page images wrapped in PDF format. A 10MB scanned document can often be reduced to 1-3MB with minimal visual impact.
MiniPx handles PDF processing entirely in your browser using PDF.js and jsPDF. Your documents never leave your device — critical for legal contracts, financial documents, medical records, and any sensitive paperwork.
For documents that need to meet specific size limits, combine PDF compression with image quality adjustment. Most email services have a 25MB attachment limit, and many form portals require PDFs under 5MB or 2MB.