Download KillerPDF 1.4.1

Added
- Page number jump box in toolbar. Type a page number and press Enter to navigate directly to that page.
- Signature auto-selects after placing so you can immediately reposition or resize without switching tools.
- Zoom to Width / Fit Page now re-applies when the window is resized.
- Middle mouse button panning. Hold middle mouse and drag to pan the view in any direction.
- Multi-page grid view toggle (toolbar button left of the zoom dropdown). Switch between seeing all pages in a scrollable grid and a focused single-page view. Defaults to grid view on open.
- Ctrl+S saves directly to the current file without a dialog. Ctrl+Shift+S opens Save As.
- Arrow key navigation: Left/Up goes to the previous page, Right/Down goes to the next page.
- Keyboard shortcut overlay. Press Ctrl+? to show a full shortcut reference. Dismiss with Escape or by clicking outside the panel.
- Crop tool improvements: corner drag handles to resize the selection after drawing without having to redraw; Enter applies the crop to the current page; Escape cancels; Remove Crop / Remove All buttons in the confirm bar clear an existing CropBox from one page or all pages.
Fixed
- Fit to Width and Fit Page zoomed incorrectly on HiDPI (4K) displays.
- Pages appeared blurry at higher zoom levels on HiDPI displays.
- Signature position drifted after saving.
- Memory spike (6+ GB) when opening large PDFs on HiDPI displays.
- Navigating pages caused multi-second UI lag on documents with many pages.
- Scroll wheel now navigates to the previous page when scrolled to the top of a page, and to the next page when scrolled to the bottom.