Compress PDF

PDF files frequently contain sensitive information: financial statements, legal contracts, medical records, tax documents, and confidential business correspondence. When you use a typical online PDF compressor, you are uploading these sensitive documents to a server operated by a third party. Even services that claim to delete files after processing leave you trusting their infrastructure, their employees, and their security practices. LocalForge eliminates this trust requirement by compressing PDFs entirely within your browser.

The compression engine uses pdf-lib.js to parse and reconstruct PDF documents client-side. It reduces file size by optimizing embedded images, removing redundant data streams, and streamlining the document structure. The processing happens in a Web Worker thread, keeping your browser responsive while handling large documents. You control the compression level, balancing between file size and image quality within the PDF.

This local processing approach is especially important for compliance-sensitive environments. Organizations subject to HIPAA, GDPR, SOC 2, or similar frameworks cannot casually upload regulated documents to unvetted web services. LocalForge allows individual employees to compress PDFs for email or archival without creating a compliance incident, because the data never leaves the device.

Compress single PDFs or batch-process multiple documents at once. There are no file size limits imposed by server upload constraints, no queue waiting, and no risk of your documents appearing in a data breach notification. Just private, efficient PDF compression powered by your own browser.