Radical Image Optimization Tool is a free image optimizer that will let you to visually adjust compression parameters while keeping minimum filesize. It uses with a side by side (dual view) or single view interface to compare the original with the optimized image in real time. It has a simple and easy to use interface where you will be able to control compression, number of colors, metadata settings and much more.

Radical Image Optimization Tool is a free image optimizer that will let you to visually adjust compression parameters while keeping minimum filesize. It uses with a side by side (dual view) or single view interface to compare the original with the optimized image in real time. It has a simple and easy to use interface where you will be able to control compression, number of colors, metadata settings and much more, and select image format (JPG, GIF or PNG) for your output file.

RIOT key features:

* open multiple graphic file formats by looking first at the magic number (it does not need file extension to recognize format)including support for uncommon images types (up to 128 BPP, integer and floating point. EX: hdr images, 16 bit grayscale, etc). Adaptive logarithmic tone mapping algorithm (Drago) used for HDR images
* save and optimize JPEG, GIF and PNG with a simple, clean user interface
* works in dual view: (original – optimized image) or single view (optimized image). Automatic preview of resulting image
* in-place compare function (alternativelly display the original image over the optimized image to notice small pixel changes)
* compress files to desired filesize threshold
* fast processing (all is done in memory); see instant results including resulting filesize
* decide if you want to keep metadata (comments, IPTC, Adobe XMP, EXIF profiles, ICC profiles). Unsupported metadata is removed
* transfer metadata between image formats (destination format must support them)
* common tools: pan and zoom, rotate, flip
* resize image by using well known resample filters (ex: Lanczos3, Catmull Rom, Bicubic, and others)
* the compression and the results are comparable to those of commercial products.

New Release
Fixed clipboard lock
Fixed keep original date/time if in-place optimization
Prevent delete of original if in-place optimization and "Delete original files" are used
Fixed keep original file extension when saving files in batch
Fixed keep original file extension when saving files from the main window
Fixed file extension filter when using the Save As dialog for less common JPEG extensions
Fixed render images after Auto resize dialog is discarded
Fixed multi-monitor issue: restore position only if the saved position would be inside the visible area
Fixed overriding settings in "Auto, Custom Format mode" did not switched the mode the Manual
Fixed "Auto, Custom Format mode" blending transparency for JPEG format (white color usad now by default instead of black, but should use the last chosen color)
! improved check for updates procedure. now enabled by default. does not create temporary files anymore
Added minimum compression setting to PNG (zlib level 1).
[ RIOT Portable release history ]

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