Tools / PDF Compressor

PDF Compressor

Compress PDF files in your browser — reduce size up to 90%. Three quality levels, DPI control, before/after comparison. No upload, no signup, 100% private.

Private PDFs are processed in your browser — never uploaded

Drop a PDF here to compress

.pdf · Works best on scanned or image-heavy PDFs

Runs 100% in your browser. Your PDF never leaves your device.
How it works: Each page is re-rendered as an optimized image, then reassembled into a new PDF. Text will no longer be selectable — this is a trade-off for the size reduction. Best for scanned documents, image-heavy PDFs, and print files.

What is the PDF Compressor?

Compress PDF files in your browser — reduce size up to 90%. Three quality levels, DPI control, before/after comparison. No upload, no signup, 100% private.

It runs 100% in your browser — your files never leave your device, no signup is required, and there are no usage limits or watermarks.

How to Use the PDF Compressor

  1. Paste, drop, or type your input into the tool above.
  2. Adjust the options to match what you need.
  3. Preview the result before copying or downloading.
  4. Everything is generated on your device — nothing is uploaded.

Why Use Our PDF Compressor?

  • 100% private — files never leave your device.
  • No signup, no email, no limits — completely free.
  • Works on any device — desktop, tablet, mobile.
  • No watermarks, no hidden fees.

Frequently Asked Questions

Is the PDF Compressor free?

Yes — completely free with no signup, no email, and no usage limits.

Are my files uploaded to a server?

No. Everything runs in your browser using JavaScript. Your files never leave your device.

Do I need to install anything?

No — just open this page in any modern browser (Chrome, Firefox, Safari, Edge).

Does the PDF Compressor work on mobile?

Yes, on iOS and Android browsers. Very large files are best handled on desktop.

Is there a file size limit?

No hard limits. Files under 100 MB work well on most devices.

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