New option in Properties->Editing: Set custom filename for pasted image.New Edit menu: Apply image effects to inverted selection (non-selected area).SHIFT + Click within selection: Apply pasted image and keep selection.New Hotkey after 'Paste into selection':.

'Paste into Selection': Second paste (CTRL+V) will also apply the image.

(new button: 'Change time' for selected files).

New in Slideshow dialog: Option to set different time for each file.

New option in Insert Text dialog: Text rotation (90 deg for vertical text).

(thanks to Richard Yu, Stephen Eckels, adzm).

Option for Dark mode: Properties->Viewing (works best with Windows 10/11).

In addition it features drag and drop support, directory viewing, TWAIN scan support, slide shows, batch conversion, multi language support, thumbnail option, preview option, print option, IPTC edit, capturing, extract icons from EXE/DLL/ICLs, lossless JPG (Joint Photographic Expert Group) rotation, EXE/SCR creating, many hotkeys, many command line options and modifications such as changing color depth, crop, blur and sharpen. IrfanView is a fast and simple freeware image viewer, editor and converter that supports all major graphic formats, including AIF, ANI/CUR, ASF, AU/SND/AIF, AVI, B3D, BMP/DIB, CAM, CLP, CRW, DAT (VideoCD), DCR, DDS, DXF, Dicom/ACR, DJVU, ECW, EMF/WMF, EPS, FLI/FLC, FPX, FSH, G3, GIF, ICO/ICL/EXE/DLL, IFF/LBM, IMG/GEM, JPG2000, JPG/JPEG, JPM, KDC, LDF, LWF, MED, MID/MIDI/RMI, MNG/JNG, MOV, MP3, MPG/MPEG, MrSID, MRW, NEF, LM/NOL/NGG, OGG, ORF, PBM/PGM/PPM, PCX/DCX, PhotoCD, Mac PICT, PNG, PSD, PSP, QTIF, RAS/SUN, RAW, RAF, RA, RLE, SFF, SFW, SGI/RGB, SWF, TGA, TIF, TTF, TXT, WAD, WAV, WBMP, WBZ/WBC, WMA, WMV, XBM and XPM.

Download the new IrfanView 4.66