Back to all tools

Lock PDF

Add password protection to your PDFs

Drop your files here

or click to browse

PDFUp to 20 files

The modern PDF toolkit. Edit, convert, merge, and optimize your PDFs entirely in your browser.

Organize

Merge PDF
Split PDF
Remove Pages
Organize PDF

Convert

JPG to PDF
PDF to JPG
Word to PDF
PDF to Word

Learn

All PDF guides
How to merge PDFs
Compress without quality loss
Sign a PDF

Edit & Security

Rotate PDF
Compress PDF
Protect PDF
Sign PDF

© 2026 Slate PDF. Files are processed locally in your browser — only the optional Translate tool contacts an online service.

No file size limits