NoBS Image Viewer

View images without any BS.

Right click an image file, "open with", choose this program and make it the default program for that image type. Your BS shall be gone.

Generally supported file types: .png, .jpg/jpeg, .bmp, .qoi, .tga, .gif (non-animating), .hdr (with basic tone-mapping).

Keys:

• I: toggle information about the image
• H: horizontally flip image
• V: vertically flip image
• R: rotate image
• B: change background
• W: fit window to image
• F5: reload image
• Shift + F5: toggle auto-reload image
• F: toggle linear/point filtering
• C: toggle colour space between sRGB/linear
• Left and right arrows: previous and next file in the directory
• 0: reset view
• 1: zoom to a 1:1 pixel size between image and screen

Other little things:

• Copy and pasting works
• Drag and drop files or images into it
• Ctrl+O and Ctrl+S works

Note: This is for 64-bit Windows. This won't work on 32-bit Windows. If you're not sure what you have, right-click your Start button, click System, and you should see it in there somewhere.

Future ideas:

• Animated gifs?
• Other file types maybe?
• Software renderer for wider compatibility?
• Better support for large images (width or height larger than 16384 pixels).

9 May 2023

• Introduced showing information about images by pressing the "I" (capital-i) key. Shows general image information, and a tooltip to show pixel information where the cursor currently is.
• Supports loading 24bit and 32bit .bmp images.
• Supports saving 32bit .bmp images.
  
• Better supports loading .hdr images (using some basic tone-mapping).
• Better support loading in large images (width or height larger than 16384 pixels) - previously it would fail. (Those images are now scaled down due to a Direct3D limitation - to be improved in future.)
• Better support for showing images in sRGB and linear colour spaces, and introduced the "C" key to toggle between colour spaces.
• Saving an image now respects it being flipped horizontally, vertically, and being rotated.
• Saving to formats that don't support an alpha channel (.jpg), now flattens the white/black background.
• Improved copying and pasting between other image viewer/editor programs.
• Improved the order images are viewed when browsing a directory such that it matches Windows Explorer.
• Faster at skipping over non-image files when browsing a directory.
• Fixed not accurately viewing images at 100% zoom (with both bilinear/point filter modes).
• Fixed a memory leak when viewing .qoi images.

22 May 2022

• Added support for the QOI image format.

2 February 2022

• Fixed drawing the image one pixel to the right when flipped horizontally; and one pixel down when flipped vertically.
• Pressing the "0" key to reset the image position is now much faster if the image was dragged very far off-screen.

30 January 2022

• Subpixel sampling when point filtering textures.
• Prevent zooming in so far such that the image would become unstable.
• Prevent zooming out so far that the image wouldn't be visible.
• Prevent panning so far such that the "0" key is required to bring it back.

28 January 2022

• The program is now DPI aware.
• VSYNC is now enabled so the graphics card won't whine when zooming.
• Fixed texture wrapping at the edges of the window.
• Using SRGB texture formats rather than linear texture formats.

5 May 2021

• Fixed bug where pasting an image from the clipboard with an odd pixel height would result in the center line's red and blue colour channels swapped.

10 April 2021

• Added the "1" key zooming to a 1:1 pixel size between image and screen.
• Fixed bug where "W" would sometimes not work if pressed immediately after "0".

28 March 2021

• Tidied up the window position and size when pressing "W" key.
• Added error messages if the program fails to start up (if you get this, it's probably failing to initialise Direct3D 11).
• Improved memory usage - previously it'd use as much memory as was needed for the largest file it's opened; now, it downsizes.
• Enabled compiler optimization, decreasing .exe size by 10%.

26 March 2021

• Initial release.
• Supports opening file types: .png, .tga, .jpg, .jpeg, .jfif, .bmp (8 bpp only).
• Supports saving file types: .png, .tga, .jpg.
• Image mirror/flip/rotate/pan/zoom.
• Fit window to image.
• Automatic and manual reload of file and clipboard.
• Copying images to clipboard.
• Pasting images and files from clipboard.
• Drag + drop files in.
•  Left/right to change file in directory.