Large PDF files are difficult to share via email, slow to upload, and consume storage space. Our free PDF Compressor reduces PDF file sizes by re-serializing the document, removing redundant data and optimizing the internal structure.
The tool uses pdf-lib to parse and re-create the PDF, which can eliminate redundant objects, unused resources, and other bloat that accumulates in PDFs. Compression results vary based on the original file's structure.
Processing happens entirely in your browser. Your PDF files are never uploaded to any server, making this tool safe for confidential documents, legal files, and personal records.