Compress PDF

Reduce your PDF file size instantly in your browser. No upload required — 100% private.

Your files never leave your device

Drag & drop your PDF here

or click to browse

Compression Complete

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How to Compress a PDF File

  1. Upload your PDF — Click the drop zone or drag & drop your PDF file.
  2. Click Compress PDF — Your file is processed instantly in your browser.
  3. Download — Save your compressed PDF file and see the size reduction.

This 2 That compresses PDFs entirely in your browser using pdf-lib. It strips unused objects, metadata, and uses compact encoding to reduce file size. Your files are never uploaded to any server — they stay 100% private on your device.

Why Compress PDFs?

Large PDF files can be difficult to email, upload, or share. Compressing your PDF reduces the file size while keeping the content intact. This is perfect for:

  • Emailing documents within attachment size limits
  • Uploading to web forms with file size restrictions
  • Saving storage space on your device
  • Faster loading when sharing PDF links

Frequently Asked

How much will my PDF be compressed?
It depends on the PDF content. PDFs with embedded images typically see 20-60% size reduction. Text-heavy PDFs may see 5-20%. The tool strips unused objects and metadata for maximum compression.
Will compression reduce quality?
No. This tool optimizes the PDF structure without touching image or text quality. Visual content remains identical — only unused data is removed.
Is there a file size limit?
Since processing happens in your browser, the limit depends on your device's memory. Most devices handle PDFs up to 100MB without issues.
Is my PDF private?
Yes, 100%. Your PDF never leaves your device. All compression runs locally in your browser using JavaScript.