Free Online PDF Compressor

Reduce PDF sizes without losing document clarity. Shrink scanned docs, optimize attachments—all processed securely in your browser.

or drop a PDF file here

100% Secure. Processing happens locally in your browser.

Client-Side Document Optimization Text and Image Clarity Preservation Multi-page PDF Compression Support Zero Server Uploads (100% Secure)

PDF Optimization Use Cases

Optimized presets for different PDF sharing and application requirements.

Government Portal Submissions

Job Resume Attachments

Email File Size Optimization

E-book Web Optimization

How to Compress a PDF Online

1. Upload Your PDF File

Select the PDF document from your device. The document loads locally in your browser memory.

2. Choose Compression Level

Select Low, Medium, or High compression depending on your desired file size reduction.

3. Process Document

Click 'Compress PDF' to run the optimization algorithms in client-side JavaScript.

4. Download Optimized PDF

Save the newly compressed PDF document to your device immediately.

PDF Compression FAQs

Is my PDF content secure?
Yes. Since all processing runs locally on your device, no data is sent to external servers. Your documents remain private.
Will compression affect text clarity?
No. The compressor targets image assets inside the PDF, leaving vectors, fonts, and text layout crisp.
Can I compress password-protected PDFs?
No, you must unlock password-protected PDF files before processing them.