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Free Optimizer to Prepare Images for the Web
Radical Image Optimization Tool (RIOT for short) is a
free image optimizer that will let you to adjust visually compression
parameters while keeping minimum file size, which is essential for the web
placement.
It uses with a side by side (dual view) or single view
interface to compare the original with the optimized image in real time and
instantly see the resulting file size.
It is lightweight, fast and simple to use, yet powerful
for advanced users. 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 can be integrated as plug-in in well-known programs
like The GIMP, IrfanView and XnView.
Main features:
* Open many image types including rare/scientific types.
* Save and optimize JPEG, GIF and PNG with a simple, clean
user interface.
* Automatic optimization selects the most suitable format
and parameters.
* Works in dual view: (original – optimized image) or
single view (optimized image).
* Automatic preview of resulting image.
* In-place compare function (alternatively display the
original image over the optimized image to notice small pixel changes).
* Compress files to desired file size threshold.
* Fast processing (all is done in memory).
* See instant results including resulting file size.
* Batch support (process multiple files at once).
* Transparency handling options.
* 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.
* Basic image adjustments: brightness, contrast, gamma,
invert.
* Visually reduce number of unique colors for PNG and GIF
images in order to reduce file size
(two quantization methods are available: Xiaolin Wu and
NeuQuant neural net).
* Resize image by using well known resample filters (ex:
Lanczos3, Catmull Rom, Bicubic, and others)
out-of-the-box support for external PNG optimizers
(optipng, pngout, etc).
* The compression and the results are comparable to those
of commercial products, even higher.
Adaptive logarithmic tone mapping algorithm (Drago) used
for HDR images.
Screenshots:
Website: http://luci.criosweb.ro/riot/
