About 55PDF

55PDF is a free, browser-based suite of PDF tools. We built it because dealing with PDFs shouldn't require expensive software, a login, or uploading sensitive documents to a stranger's server.

What we offer

• 30 PDF tools covering organizing, optimizing, converting, editing, and security
• Client-side processing for most tools — files never leave your device
• No account required, no file size limits for client-side tools
• Available in 10 languages: English, Chinese, Spanish, Portuguese, French, German, Japanese, Korean, Russian, and Arabic

Our technology

55PDF runs on Next.js and uses pdf-lib for client-side PDF manipulation. This means your files are processed entirely in your browser — we never see or store them. For advanced operations like compression and OCR, we use a secure server pipeline that automatically deletes files after processing.

Privacy first

We take your privacy seriously. Client-side tools process files locally in your browser. Server-side tools delete uploaded files immediately after processing. We do not sell, share, or analyze your documents. See our Privacy Policy for full details.

Contact us

Have questions, feedback, or a bug report? Visit our contact page or email us at [email protected].