RENiX PDF Annotator Text callouts (boxed or plain), Text + Leader with smart alignment, and editable Dimensions Lines and single/double arrows with multiple arrowheads (standard, stealth, open, circle, diamond, and architectural slash) Rectangles, circles, arcs, polylines, and revision clouds Freehand Pen and Signature ink Stamps — preset and custom (APPROVED, REVIEWED, PAID, and your own) Highlighter with adjustable transparency Full control over color, line weight, dash pattern, fill/background with transparency %, fonts, and styles Work faster Reusable Block Library (.rix) — save any selection as a named block, organize by category, place with a click, import/export, and download shared libraries from the web Multi‑document tabs, group/ungroup, group scaling, lock, bring‑to‑front / send‑to‑back Window/crossing selection, box zoom, Ctrl+scroll page navigation Robust Undo/Redo across every change Find, crop, and recognize Whole‑file text search (Ctrl+F) that jumps to and highlights each match Crop Page to reframe any sheet Built‑in OCR for scanned PDFs — select and copy text right off the image, fully offline (English) Save, print, share One‑click round‑trip save: markups are burned onto the page (visible in any PDF viewer) and embedded as editable data Export a flattened copy for Adobe Acrobat, Bluebeam, and others Print with markups; open PDFs directly from File Explorer Designed for structural, mechanical, and detailing workflows — but great for anyone who needs precise, professional PDF markup on Windows.

PDF Annotator

RENiX PDF Annotator is a purpose‑built Windows desktop app

RENiX PDF Annotator is a purpose‑built Windows desktop app