Is this PDF compressor free?

Yes, it is free to use with no signup required.

Can I compress PDF on mobile?

Yes, the tool works on Android, iPhone, and desktop browsers.

Are my PDF files uploaded?

Compression is performed in your browser for privacy-first processing.

Can I compress PDF under 1MB?

Use Compact mode for maximum reduction and then verify output size.

Compress PDF Online Free

Reduce PDF size for email attachments, job applications, and portal uploads with quality-first compression.

Select PDF file

or drag and drop a PDF here

Secure processing • Fast compression • No account required

Compression Settings

Compression Level

Pages to compress

All pages Selected pages

For scanned PDFs, Compact mode usually gives the best size reduction.

PDF Compressed!

Your optimized PDF is ready.

Original 0 KB

Compressed 0 KB

Saved 0%

compressed.pdf 0 KB

or Merge PDFs

Compressing PDF...

How to compress PDF files online

Upload your PDF file.
Choose High Quality, Balanced, or Compact mode.
Select all pages or only specific pages.
Click Compress PDF and download the result.

Benefits

Fast browser workflow with no software install.
Works on mobile and desktop.
Optimized for upload size constraints.
Private processing for sensitive documents.

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Popular Compress PDF workflows

Common compression goals handled directly in this tool:

Compress PDF for Email Compress PDF for Job Application Compress PDF under 1MB Compress PDF for WhatsApp Compress PDF on Mobile Compress PDF without Losing Quality

View all 50 Compress PDF use case pages