Compress PDF

Large PDF files are a constant headache in modern workflows. Email services typically cap attachments at 10-25 MB. Web portals for job applications, government forms, and insurance claims often impose even stricter limits of 2-5 MB. Cloud storage costs scale directly with file size. And downloading a 50 MB PDF on a mobile connection can be painfully slow.

The root cause of oversized PDFs is almost always embedded images. When documents are scanned at high resolution, when presentations with large graphics are exported to PDF, or when multiple high-quality photographs are included in a report, the resulting PDF can easily balloon to tens or hundreds of megabytes. The text content of a PDF is typically tiny — it is the images that consume the overwhelming majority of file size.

Our PDF compressor addresses this by intelligently recompressing the image layers within your PDF document. The tool reads your PDF, identifies all embedded images, recompresses them at a reduced quality level that maintains visual readability, and reassembles the document. The result is a significantly smaller PDF that looks nearly identical to the original when viewed on screen or printed at standard quality.

What sets our compressor apart is that it runs entirely in your browser. Every other major PDF compression service — Smallpdf, ILovePDF, Adobe Acrobat Online — requires uploading your document to their servers. This is problematic for the exact types of documents people most often need to compress: scanned contracts, medical records, financial statements, and government forms. These documents are sensitive by nature, and uploading them to a third-party server introduces unnecessary privacy risk. Our tool processes everything locally using the pdf.js rendering engine and jsPDF, ensuring your documents never leave your device.