Graphics - Processing (54)

darktable is an open source photography workflow application and non-destructive raw developer - a virtual lighttable and darkroom for photographers. It manages your digital negatives in a database annd lets you view them through a zoomable lighttable and enables you to develop raw images, enhance them and export them to local or remote storage. It focuses on the workflow to make it easier for the photographer to quickly handle the thousands of images a day of shooting can produce. It is one of the very few FOSS projects that supports tethered shooting.

XnConvert is an easy, multi-platform image converter for graphic files, photos and images. It supports more than 500 file formats. You can rotate, crop, resize, edit metadata, add a watermark, change contrast, brightness or gamma, apply filters, masks, effects and many other things.

JPEG Lossless Rotator is an application for rotating JPEG files performs a special "lossless" algorythim using block transformation without a decoding and re-encoding process, which preserves the image quality. If the image can't be rotated without losing some pixels, the program will prompt you with the costs in pixels.

Features batch and automatic rotation, image flipping, renaming and deletion of files, and display of EXIF-data.

RIOT (Radical Image Optimization Tool) presents a before-and-after image compression view that allows you to reduce file size of an image into JPG, PNG, or GIF format. Includes optional metadata removal, batch operations, compression to a target file size, transparency options, and other common editing functions (flip, rotate, zoom, pan). Notable versus similar software in the ability to gradually reduce the available colors one-by-one (7, 8, 9, 10...), not just milestones of 16, 32, 64 etc.

The program is also available as a plugin for XnView, GIMP, or Irfanview (see website).

Functional in Linux using Wine. Many of the official entries here on PortableFreeware have used RIOT for compression. Note that the installer version of this program is considered adware.

ImBatch is a powerful image processing tool with a long list of available tools for modifying one or more files. Available options include resize, rotate, modify colors, metdata, blur, shadow, crop and many more. Tasks can be chained (e.g. adjust contrast + sharpen) and reordered to just preview not just one change but multiple edits. Any process can be saved for quickly assembling future edits.

The program can also optimize images, create or add to an existing PDF, create animations (GIF), and upload the results to a remote server. The program can also passively watch a given folder for images to process and longer operations can put the computer in standby to save power once they conclude.

Smart functions include autocrop, auto-enhance, auto-stitch (for panorama-type images). The program supports a wide range of formats, command-line operations and batch task settings for easy load/unload of operations.

PhotoDemon is a fast, feature-rich photo editor with rotate, resize, crop, etc. and a variety of color, contrast, filters and other graphics tools. The program also allows adding text, a metadata viewer/editor, on-canvas paint tool, layers, screenshot too, and works with common graphics formats including BMP, GIF, JPG, PNG, TIFF, PSD, JP2, JXR, PPM, TGA and WEBP.

The program also supports macro edition and batch processing.

FastStone Photo Resizer is a batch image converter/resizer that enables users to convert, rename, resize, crop, rotate, change color depth, add text and watermarks to many images at one go. Supports file renaming and a conversion preview is available before processing.

Any set of conversion settings can be saved for future use.

PngOptimizer is an easy-to-use program to compress common graphics formats to PNG format with no quality difference. Files can be added one at a time or in batch to the program icon or window. Images can also come from the clipboard by pressing CTRL+V while the application is in focus.

Cross-platform with clients available for Linux. A CLI version is available.

Graphics formats supported include BMP, GIF, TGA, as well as further compressesing PNG files. Animated GIF and PNG files (APNG) are also supported. Size decrease for PNG files varies widely on the original editor, but GIF and BMP conversions can be as much as 40% and 95% respectively.

Alternatively, PngOptimizer Portable automatically switches between 32-bit and 64-bit and adjusts the screenshots path.

Xlideit Image Viewer bundles an image, document and video viewer with a basic graphic editor. The interface is customizable to show groups of thumbnails and subfolders. Edition tools include crop, rotate/flip, convert and tag viewer/editor. Includes additional options to generate slideshows.

Note that at first launch, the program launches full screen and opens any images on the desktop.

Format support: views most common image formats as well as Photoshop, PCX, TIF, WMF and TGA. Video formats include MPG, MP4, WMV and AVI while document preview is limited to HTM, MHT and RTF.