BigPDF — Offline PDF Toolkit

Edit, compress, convert (Word/Excel/PPT/JPG), merge, split, sign, extract PDF pages — runs completely offline.

BigPDF — Offline PDF Toolkit Edit, compress, convert (Word/Excel/PPT/JPG), merge, split, sign, and extract PDF pages — runs completely offline. 100% private, no file upload. BigPDF gives you 15 powerful PDF tools that run entirely in your browser. Your files never leave your device — nothing is uploaded to any server. Fast, private, and free to start. 🛠️ Tools Included Edit PDF: Rotate, delete, and reorder pages; insert text and images. Annotate PDF: Highlight, underline, freehand drawing, notes, and stamps. Redact PDF: Black out sensitive content permanently. Watermark: Add a text watermark to every page. Page Numbers: Add page numbers with a custom position and format. Compress PDF: Reduce PDF file size without losing quality. PDF → Word: Extract text into a .docx file. PDF → Excel: Rebuild tables into a .xlsx file. PDF → PowerPoint: Turn each page into one slide. PDF → JPG: Export each page as a JPG image. Merge PDF: Combine multiple PDF files into one. Split PDF: Split a PDF into multiple files. Sign PDF: Draw or type a signature and place it on the page. Extract Pages: Pull out only the pages you select. AI Assistant: Summarize or ask questions about your PDF (optional, bring your own API key). ⭐ Why BigPDF? ✓ 100% Offline: All 14 core tools run locally in your browser. Your files never leave your device. ✓ No File Upload: Complete privacy. No cloud, no servers, no tracking. ✓ Fast Processing: Everything runs on your device. No waiting for uploads or downloads. ✓ Free to Start: 5 free uses per week. Upgrade for unlimited access. ✓ Multiple Languages: English, Japanese, Vietnamese, Korean, German, French, Spanish, and Arabic. Perfect for anyone who works with PDFs regularly — students, professionals, and anyone who values privacy. No account needed, no sign-up required. Just open and use.