Meet PDFPenguin—fast, friendly online PDF tools built for everyday work. Use our Compress PDF, Merge PDFs, Split PDF, and Compare PDFs to compress PDFs without losing clarity, merge PDF files, extract or split pages, highlight differences, rotate/reorder pages, and Protect PDF or Unlock PDF documents. Secure, browser-based, and simple to use, PDFPenguin keeps your PDF workflow quick, organized, and stress-free.

Built for clarity

Compress PDFs while preserving readability. Choose a quality level that fits email, web, or print.

No installs, just web

Everything runs in the browser or on our servers—no desktop software to maintain.

Private by default

Transfers are HTTPS-secure and temporary files are cleaned up automatically.

FAQs

Is PDFPenguin free to use?

Yes — core tools are free to use in the browser. Some advanced features may require an account.

Is it safe to upload my PDFs?

We process files over HTTPS and run tools in a secure environment. We don’t index your documents; temporary files are cleaned up automatically.

Will compressing a PDF lower quality?

Our compressor balances size and clarity. Choose a lower or higher quality level based on your needs—previews help you pick the right setting.