Compress PDF Online Free — Reduce File Size Instantly

Reduce your PDF file size without losing quality. Upload any PDF and download a smaller version instantly. Perfect for email attachments, uploads, and saving storage space. Free, no signup required.

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Compress PDF

Upload a PDF File

Upload a PDF to compress and reduce its size.

Drag & drop a PDF file here, or click to browse

Single PDF file only

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How to Compress a PDF Online

  1. Upload your PDF — Select the PDF file you want to compress from your device.
  2. Automatic compression — The tool removes unnecessary metadata and optimizes the file structure to reduce size.
  3. Download the smaller PDF — Save your compressed file. The tool shows you both the original and new file sizes.

Frequently Asked Questions

How much smaller will my PDF be?

Results vary depending on content. PDFs with large embedded images typically see 30-70% reduction. Documents that are already optimized may see 5-15% reduction.

Will compression reduce the quality?

The compressor removes unnecessary metadata, duplicate objects, and unused elements. Text and vector graphics remain unchanged. Visual quality is preserved.

Is there a file size limit?

No hard limit. Compression runs in your browser, so larger files work fine — they just take a bit longer. No files are uploaded to any server.

Is this tool free?

Yes, completely free with no restrictions. For document creation, e-signatures, and AI-powered tools, Writ (QuikDB) offers a lifetime plan at $29.99.

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