The venerable graphics program has been updated to Irfnaview 4.40. NOTE: get the 4.40 plugins from the site too. From the History of changes link:

Version 4.40 ( - CURRENT VERSION - ) (Release date: 2015-07-31)
◾The 64-bit version of IrfanView is available:
The 64-bit version is faster for very large images (25+ Megapixels)
◾Option to support IrfanView by installing "Amazon 1Button App" (OPTIONAL !)
◾Support for animated PNG files (APNG)
◾EXIF date (taken) sort menu added to main window sort menu
◾New Sort dialog option: Sort by EXIF date (date taken)
◾New toolbar item: Zoom box with common values (Properties->Toolbar)
(You can also write a new zoom value and press Enter)
◾New PDF PlugIn (enable in Properties->PlugIns->PDF)
◾New in Thumbnails window: Export image tiles for selected files (batch mode)
◾Load cursors and bitmaps from EXE/DLL files (Thanks to Jason Hood)
◾Option to set a custom font for TXT loading (Properties->Browsing/Editing)
◾Option to use left mouse button for fullscreen scrolling (for touch screens)
◾The 2 GB limit for EXE/SCR-Slideshow files changed (now: 4 GB, Windows EXE limit)
◾New Fine Rotation method/option added (faster for very large images)
◾New option for the Red-Eye-Correction effect (dialog): Set gray intensity
◾Some fixes in the Paint PlugIn
◾New hotkey: CTRL + SHIFT and '+' or '-' to change GIF/ANI/PNG animation speed
◾New hotkey: CTRL + SHIFT + mouse click: Create selection based on clipboard image
◾New button in Batch processing dialog: Pause/Resume
◾New button in Advanced batch dialog: Get current selection for cropping
◾You can Drag&Drop (or Send To) multiple files to IrfanView shorcut or window
◾PlugIns "Metadata" and "JPG-Transform" included in the IrfanView installer
◾New command line option: /file=filename(s)
=> set the input filename(s) (at the end of the command chain)
◾New command line option: /display=(x,y,w,h,zoom,scrollX,scrollY)
=> set position, size, zoom and scroll position of the window and image
◾Command line: wildcards support for /extract (see "i_options.txt")
◾Command line: /panorama, /multitif and /multipdf can use "filelist=txtfile"
(see "i_options.txt" for examples)
◾Several PlugIns are changed/updated, please install the newest versions