Compress PDF Free - Reduce File Size Without Losing Quality

PDF file size becomes a problem when emailing documents, submitting to web forms, or uploading to portals with strict limits. Email services reject attachments over 10-25 MB, and many government, HR, and banking portals cap uploads at 5 MB or less. This PDF compressor reduces file size by downsampling embedded images and applying compression to document streams, with a before/after size comparison showing the exact bytes and percentage saved.

Three compression levels match different use cases. Moderate compression (30-50% reduction) preserves the best visual quality for documents that will be printed or presented on screen. High compression (50-70% reduction) is the right choice for email attachments and portal uploads where the recipient will read the document on screen. Maximum compression (70-85% reduction) achieves the smallest possible file for archival or cases where file size matters more than image sharpness.

Grayscale mode converts all content to black and white before compression, adding significant extra reduction - particularly effective for text-heavy reports, scanned invoices, and any document where color is not needed. Strip Metadata removes author name, creation date, and application information from the output, reducing size further.

Adjust settings and re-compress the same file instantly without re-uploading - useful when you need to hit a specific size target and want to compare results at different levels.

All compression runs locally in your browser. Financial statements, medical records, and confidential business documents are never sent to any server.