Compress PDF Files

Reduce PDF file sizes while maintaining quality. Free online PDF compressor. Free, private, and watermark-free. Files are processed in your browser without an upload step.

Free Compress PDF Files tool with no upload step

Use DropIn PDF to compress PDF files directly in your browser. It is designed for email attachments, upload forms, scanned packets, and archived records, with local processing, no registration, and no watermark added to your download.

Common uses

  • Prepare email attachments, upload forms, scanned packets, and archived records for email or upload portals.
  • Turn large PDF files into a smaller PDF when possible without creating an account.
  • Handle sensitive documents locally instead of sending files through an upload queue.

How it works

  1. Choose large PDF files: Drag files into the tool or use the file picker. DropIn PDF checks the file type and keeps processing on your device.
  2. Arrange or choose options: Reorder pages or files, choose the output format, and set page options when the tool supports them.
  3. Download a smaller PDF when possible: Create the result and download it without a watermark, account signup, or server upload step.

Frequently asked questions

Is this tool free?

Yes. DropIn PDF lets you compress PDF files for free in your browser, with no account required.

Are my files uploaded?

No. Supported conversions run locally in your browser, so your files do not need to leave your device.

Will there be a watermark?

No. DropIn PDF does not add a watermark or extra branded pages to your output.

What file size can I use?

The current free processing limit is 100MB per batch, which helps the browser stay responsive.

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