Compress PDF

Reduce PDF file size. Shows original size, result size and actual savings transparently.

How to Use

  1. 1 Upload a PDF file.
  2. 2 Click "Compress" to process.
  3. 3 Review the original size, compressed size and savings percentage.
  4. 4 Download the compressed PDF.

Features

Real savings

Shows actual file size before and after compression.

Transparent results

If meaningful compression cannot be achieved, we tell you honestly.

No quality loss

Compression removes redundant data without corrupting the document.

Privacy

Your PDF is processed in your browser and does not need to be uploaded to our servers.

This tool processes files or input locally in your browser.

Frequently Asked Questions

How does browser PDF compression work?

We use pdf-lib to re-serialize the PDF, which can remove redundant objects and compress streams. Results vary by file.

What if my PDF cannot be compressed further?

We will tell you transparently if no meaningful savings can be achieved, rather than showing fake results.

Related Tools

Continue with another tool in the pdf workflow.

  • PDF Size Analyzer

    Analyze PDF file size and potential savings.

  • Merge PDF

    Combine multiple PDFs into one file in seconds.

  • Split PDF

    Extract pages or split into multiple files with range support.

  • PDF to JPG

    Extract pages from a PDF as JPG images.

  • PDF Information

    View detailed information about a PDF file.

  • JPG to PDF

    Convert JPG, PNG and WebP images into a single PDF document.

Helpful Guides

  • How to Merge PDF Files Online on Any Device

    Merge PDF files online in your browser. Follow clear steps, understand file order, and troubleshoot large or password-protected PDFs on phones, tablets, and computers.

    5 min read · Beginner

  • How to Compress a PDF File

    Reduce PDF file size without losing quality — perfect for email attachments and web uploads.

    5 min read · Beginner