A good way to save some storage space is to compress the files that you don't need immediately, into archives. If you did the same for high resolution images and photos, but want to view them without extracting them first, you can do it with PicView.
It is an open source image viewer that can view pictures inside archives, supports comic book formats, RAW image formats, and more.
The program has a compact interface with a dark theme, and a toolbar at the bottom. Click on the folder icon on the toolbar to open an image, or drag and drop a picture onto the PicView interface. The window resizes dynamically to fit the image's resolution. The filename, resolution, and file size of the selected picture is displayed on the image viewer's title bar.
Use the arrow buttons on the toolbar or the arrow keys on your keyboard to navigate between all images in the folder.
The gallery icon can be used to view the images in a full screen gallery, contained (windowed) gallery with thumbnails. PicView's built-in slideshow tool can be accessed from the pop-up interface of the icon. It also has options to rotate and flip the image.
PicView has a right-click menu that can be used to open or save images, open an image in a different program. View the recently accessed files from the menu, sort the files by name, size, date, format, last accessed/written time.
Show or hide the interface from the Settings menu, as well as toggle the looping, auto-scrolling mode (middle mouse button). Other options in the context menu include setting the image as wallpaper/lock screen background, view the folder where it's located, Copy, cut, paste or delete the image, and view the image's properties.
The Gear cog button on PicView's toolbar lets you toggle the autofit window, enable fill image height view mode. The buttons in the menu has shortcuts to access the "show info" window, adjust the zoom level, change the background color.
Head to the PicView's primary options window by clicking on the hammer icon. Tweak the zooming speed, the slideshow timer, wallpaper mode, search tool's behavior from the General Settings tab. The UI settings tab lets you switch between the dark/light theme, and change the accent color.
PicView's Magic Wand icon on the toolbar has a few editing options. The Optimize and Resize section is not available yet, but the other options are ready.
Choose from 26 available image filters from the Shader Effects window. It includes Negative Colors, Old Movie effect, Monochrome, Banded Swirl, Blur, Pixelate, Pivot, Sketch, Bands, Black & White, Bloom, Wave Warper, Ripple, Directional Blur, Embossed, Paper Fold, ToneMapping, Glass Tile, Color Tone, Gloom, Underwater, Ripple Alt, Telescopic Blur, Smooth Magnify, Pencil Sketch and Frosty Outline.
To add an effect click on it and then on the save button. The application has a built-in cropping tool which is handy for editing images, the color picker tool is a nice addition as well.
PicView can be used to view images inside archives (7z, 7Zip, ZIP, TAR, ISO, CAB, WIM, BZip2, RAR) if you have 7-Zip or WinRAR installed. These are the image formats that are supported by the program.
JPG, JPEG, JPE, PNG, BMP, TIF, TIFF, GIF, ICO, WDP, JFIF, KTX, WEBP, WBMP, PSD, PSB, SVG, 3FR, ARW, CR2, CRW, DCR, DNG, ERF, KDC, MDC, MEF, MOS, MRW, NEF, NRW, ORF, PEF, PGM, PPM, RAF, RAW, RW2, SRF, X3F, BPG, CUR, CUT, DIB, EMF, EXIF, EXR, PCX, TGA, WMF, WPG, XBM, XPM, HDR, HEIC
It can also be used to view the following comic book formats: CBR, CB7, CBZ, CBT and XZ.
The program is open source. PicView is available in 3 versions: an installer and a portable archive, both of which come with the dependencies required to run the program (.NET Core). The third version which weighs less than 15MB is also portable, but requires .NET core 3.1 to run.
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