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PDF Tools

Compress, merge, and split PDFs. Free, private, runs in your browser.

Drag & drop a PDF here

or click to browse PDF up to 10MB

Drag & drop PDFs here

or click to browse (select multiple) PDF up to 50MB each

Drag & drop a PDF here

or click to browse PDF up to 50MB

Go PRO

Unlock all PDF tools

Free
$0
forever
  • PDF compression
  • Up to 10MB per file
  • 1 file at a time
  • Merge PDFs
  • Split PDFs
  • Batch processing
  • Up to 50MB per file
  • Ad-free experience
Current Plan
Most Popular
PRO
$4.99
one-time payment
  • Everything in Free
  • Merge PDFs
  • Split PDFs
  • Batch up to 20 files
  • Up to 50MB per file
  • No ads
  • Lifetime access

Frequently Asked Questions

How does PDF compression work?

CrushPDF renders each page of your PDF as an optimized image, then rebuilds the PDF. This dramatically reduces file size, especially for PDFs with large embedded images. All processing happens in your browser.

Are my PDFs uploaded to a server?

No. Everything runs locally in your browser. Your files never leave your device, keeping your documents completely private and secure.

Will compression affect text quality?

At Low and Medium compression, text remains sharp and readable. High compression prioritizes smaller file size, which may slightly reduce image quality but text stays legible.

How does merging work?

Upload multiple PDFs, drag to reorder them, then merge into a single file. PRO users can merge up to 20 PDFs at once.

Can I extract specific pages?

Yes! The Split tool lets you specify page ranges (e.g. "1-3, 5, 7-10") to extract specific pages into a new PDF. PRO feature.

What's the file size limit?

Free users can process PDFs up to 10MB. PRO users get a 50MB limit for larger documents.

Does it work on mobile?

Yes! CrushPDF works on any device with a modern browser. Compression may be slower on mobile devices due to processing power.