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Freedom251 › Image Compression Software

RIOT

by RIOT

Free plan WindowsMacLinux

Visit RIOT Alternatives Pricing

RIOT's own site

What RIOT is

RIOT is a free desktop image-optimization tool for Windows, macOS, and Linux. It compresses and resizes images in JPEG, PNG, WebP, GIF, TIFF, HEIC, and AVIF formats. Both compression modes are supported. Batch processing handles groups of images, and a live preview compares the original with the optimized version. Metadata controls are included for managing image information. The Free plan is listed as free and includes desktop image optimization, batch processing, and the live original-versus-optimized preview. RIOT does not provide API access. Its platform coverage is limited to desktop operating systems rather than a web or mobile listing. The maker, RIOT, was founded in 2003. The combination of format support, resizing, batch work, and side-by-side preview makes it suitable for users optimizing image files locally.

Who it suits

RIOT suits desktop users who need free compression, resizing, metadata controls, or batch processing. It is available for Windows, macOS, and Linux.

What it does well

  • Free desktop image optimization
  • Supports eight listed image formats
  • Batch processing for image groups
  • Live original-versus-optimized preview
  • Metadata controls included

What to know first

  • No API access
  • Desktop platforms only
  • No web or mobile platform listed

Plans

PlanBilled and limitsPrice
FreeDesktop image optimization · Batch processing · Live original-versus-optimized previewFree

As riot-optimizer.com lists them, read 20 Sept 2026. The maker's own page has the final word.

Verdict

RIOT provides free local image optimization across three desktop operating systems. Its format coverage, batch tools, resizing, and live comparison support routine file preparation.

Facts from RIOT's own pages

API access
No · riot-optimizer.com, 20 Sept 2026
Batch processing
Yes · riot-optimizer.com, 20 Sept 2026
Compression modes
both · riot-optimizer.com, 20 Sept 2026
Founded
2003 · riot-optimizer.com, 28 Sept 2026
Free plan
Yes · riot-optimizer.com, 20 Sept 2026
Metadata controls
Yes · riot-optimizer.com, 20 Sept 2026
Image resizing
Yes · riot-optimizer.com, 20 Sept 2026
Supported formats
JPEG,PNG,WebP,GIF,TIFF,HEIC,AVIF · riot-optimizer.com, 20 Sept 2026

Where RIOT stands on Freedom251

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