One of the most amazing features of Adobe Photoshop is that it allows users to reduce the size of an image as much as possible while keeping maximum photo quality. RIOT( Radical Image Optimization Tool ) is a free software that enables you to compress and optimize a specific image to make it as lightweight as possible with minimal quality loss, and won’t cost you a dime.
RIOT allows to optimize an image in real time, and display the original image and optimized image side by side, you can easily tweak the compression parameters and preview the final image and its size at once.
- Support a ridiculous amount of input image formats: jpeg, jpg, jpe, jif, png, gif, bmp, tif, tiff, psd, ico, tga, targa, mng, jng, j2k, j2c, jp2, pcd, pcx, wap, wbmp, wbm, xbm, xpm, dds, g3, koa, iff, lbm, pbm, pgm, ppm, ras, cut, sgi, pct, pict, pic, etc.
- Supported output image formats include: jpeg, jpg, jif, jpe, png, gif.
- Support batch conversion.
- Adjust the quality of the output jpeg file.
- 6 color reduction options for the PNG format: True color, Optimal 256 colors palette, Optimal 128 colors palette, Optimal 16 colors palette, Grayscale 256 colors palette, Dithered monochrome.
- 3 external optimizers for the PNG format: AdvPNG insane, OptiPNG o3, PNGout Xtreme.
- 5 color reduction options for the GIF format: Optimal 256 colors palette, Optimal 128 colors palette, Optimal 16 colors palette, Grayscale 256 colors palette, Dithered monochrome.
- Keep and reserve image metadata information between different picture formats.
- Adjust brightness, contrast, gamma.
- Rotate, flip, resample, zoom, pan the photo.
- Plus many more.
RIOT works on most common Windows platforms, it’s also available as plug-in for GIMP, IrfanView and XnView.