torreader

TorReader PDF is a fast, offline, portable PDF reader and editor for large documents.
Open 900 MB files in 1–2 seconds, scroll continuously, and view crisp text at any zoom level.

Features:
• Merge PDFs with bookmark remapping — preserves bookmark page numbers
• Split by page count or file size, extract or insert pages from other files
• Free in-app text translation
• Annotations: freehand, highlight, line/arrow, text, note, rectangle
• Full-text search (Ctrl+F, result count, sidebar Search tab)
• Reorder / delete pages, dark mode
• 100% offline, local — no account, no ads, no watermark