nomacs

True full-screen viewer with photo zoom support. Customizable image magnifier. Powerful image editing tools. Resize/resample, rotate/flip, crop, sharpen/blur, adjust lighting/colors/curves/levels, etc. Eleven re-sampling algorithms to choose from when resizing images. Image color effects, grayscale, sepia, negative, red/green/blue adjustment Image special effects. Annotation, drop shadow, framing, bump map, sketch, oil painting, lens. Draw texts, lines, highlights, rectangles, ovals, and callout objects on images. Clone stamp and healing brush. Superior red-eye effect removal/reduction with a completely natural-looking end result. Multi-level undo/redo capability. One-touch best fit/actual size image display support. Image management, including tagging capability, with drag-and-drop and copy-to/move-to folder support. Histogram display with a color counter feature. Compare images side-by-side (up to 4 at a time) to easily cull those forgettable shots. Image EXIF metadata support.

Many features are available in the free version. The Pro version has the following additional features. The thumbnail view can be toggled on/off, there's a choice of grid, sidebar or bottom bar, the size can be customized and metadata can be displayed. An image inspector is available (accessed via right-click or Tools) containing an image histogram, an eye dropper allowing you to pick colors from the image, and a coordinate picker. Additional effects are available such as saturation, levels, curves, blend with texture, and more. Effects can be grouped and saved to a list or a file for future use. The upgrade purchase is handled either by the Microsoft Store, or by our reseller Paddle.Com (depending on which purchase option you choose), and none of your card details are visible to the app.