PDF Ninja - Merge, Split, Compress & Organize PDF

Privacy-first local PDF toolkit: merge, split, compress & page management. Files never leave your device.

Merge, split, compress, and reorganize PDF files right inside your browser. 100% local processing — no uploads, no account. PDF Ninja is a privacy-first PDF toolkit — fast, precise, and it leaves no trace on any server. 💻 Everything runs on your device Every PDF operation happens entirely inside your browser. Your files never leave your computer. ► No uploads, no account, no sign-in ► Handle contracts, financial reports, and personal documents with zero risk of leaks ► No file size limit 🛡️ Why local matters Most online PDF tools upload your files to a remote server to process them. That means your contracts, invoices, and private documents pass through someone else's machine. PDF Ninja never does this — every page is processed locally in your browser, so sensitive documents never travel across the internet. 🔗 Merge ► Upload multiple PDFs at once ► Drag to reorder before merging ► Custom output filename with a {date} token ► Bookmarks (outlines) fully preserved in the merged file ✂️ Split ► By fixed page count — every N pages ► By bookmark level — split at each chapter or section ► By manual split points — click between pages to cut exactly where you want ► Check the segments you want and export only those 🗂️ Page management ► Rotate, delete, and reorder pages visually ► Extract selected pages into a brand-new PDF ► Arrow-key navigation for fast browsing ► Batch selection for multi-page operations 🗜️ Compress ► Import a single PDF and choose a compression level ► Three presets — Light, Balanced, Strong — pre-compressed in the background so switching is instant ► See the real output size and how much you save before you download 🛠️ Built for real work ► Session auto-save — reopen your browser and pick up right where you left off ► Keyboard shortcuts — Ctrl+Enter to run, Ctrl+B to collapse the side rail ► Clean dark interface, easy on the eyes for long sessions 🔒 Privacy first ✓ 100% local PDF processing ✓ No ads ✓ No account ✓ No tracking Your PDF files are processed entirely on your device and are never uploaded. The extension contacts a server only when you enter a license key to activate — no PDF content or file names are ever sent. 🌐 15 languages English · 繁體中文 · 简体中文 · 日本語 · 한국어 · Deutsch · Français · Español · Português · Bahasa Indonesia · Русский · Türkçe · Italiano · ภาษาไทย · Tiếng Việt