Toolnetix

Compress PDF

Compress / Optimize PDF in-browser to reduce file size where possible, with before/after comparison.

All processing happens in your browser. Files never leave your device. Optimization can reduce size where possible, but results vary by document structure.

Drop a PDF to compress file size

This tool performs safe in-browser PDF optimization. Results vary by file content.

Aggressive mode applies stronger structure cleanup. It may not reduce size for every file.

About this tool

Toolnetix Compress PDF provides a safe, browser-based way to reduce PDF size where possible by rebuilding document structure and applying practical metadata cleanup. It is designed for users who need smaller files for uploads, email limits, or faster sharing without relying on server-side services. Choose Light, Medium, or Aggressive optimization to control how strongly the file is rewritten, then compare original and output sizes before downloading. Because PDF compression potential depends on how the source file was authored, results can vary and some files may shrink only slightly. The full workflow runs locally in your browser so documents stay on your device and private content is not sent to external systems. Use this tool as a reliable baseline optimizer, then combine it with Split PDF or Merge PDF when preparing final document packages. Try next: Merge PDF • Split PDF.

How to use

  1. Upload your PDF file.
  2. Choose Light, Medium, or Aggressive optimization level.
  3. Run optimization directly in your browser.
  4. Review original and output file sizes.
  5. Download the compressed PDF.

Related tools

Try next: Merge PDF • Split PDF • JPG to PDF.

Merge PDF

Combine multiple PDF files into one document in your browser with full file order control.

Split PDF

Split a PDF by page ranges, specific pages, or into individual page files using in-browser processing.

JPG to PDF

Convert JPG, PNG, and WEBP images into a single PDF with page size and margin controls.

Frequently asked questions