How much can I reduce my PDF file size?

Compression ratio depends on content. Image-heavy PDFs or scans can be reduced by up to 70-90%, while pure text files shrink efficiently without degradation.

Will my text and images lose quality or become blurry?

No. Vector text remains crisp and readable. Pdfumi intelligently optimizes raster images and internal structures to keep clarity intact.

Is it safe to compress confidential documents on Pdfumi?

Yes, completely safe. All uploads are encrypted with SSL/HTTPS, processed automatically, and permanently deleted within 1 hour.

What is the maximum file size on the free plan?

Free users can upload files up to 5MB with daily quotas. For higher capacity and unlimited usage, flexible plans are available on the Pricing page.

Compress PDF online free

Shrink PDF file size by recompressing embedded images. Free daily quota applies.

Choose PDF fileor drag and drop a PDF herePDF only · max 5MB

Quick Guide

How to Use: Compress PDF online free

1. Upload Document

Select files from your device or drag and drop your document into the upload area above.

2. Process & Customize

Adjust options to your preference. The system processes and optimizes your document instantly.

3. Instant Download

Save your clean output file with zero watermarks, ready for any personal or official use.

256-bit SSL Security

End-to-end SSL/HTTPS encrypted processing. Your files are automatically deleted within 1 hour.

Zero Watermarks

Clean documents with no added watermarks. Preserves sharp typography and original layout.

Cross-Platform Access

Works smoothly on macOS, Windows, iOS, and Android without downloading any third-party app.

Frequently Asked Questions about PDF Compression

How much can I reduce my PDF file size?: Compression ratio depends on content. Image-heavy PDFs or scans can be reduced by up to 70-90%, while pure text files shrink efficiently without degradation.
Will my text and images lose quality or become blurry?: No. Vector text remains crisp and readable. Pdfumi intelligently optimizes raster images and internal structures to keep clarity intact.
Is it safe to compress confidential documents on Pdfumi?: Yes, completely safe. All uploads are encrypted with SSL/HTTPS, processed automatically, and permanently deleted within 1 hour.
What is the maximum file size on the free plan?: Free users can upload files up to 5MB with daily quotas. For higher capacity and unlimited usage, flexible plans are available on the Pricing page.