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FastStone Image Viewer vs Y99

Professional comparison and analysis to help you choose the right software solution for your needs.

FastStone Image Viewer icon
FastStone Image Viewer
Y99 icon
Y99

FastStone Image Viewer vs Y99: The Verdict

⚡ Summary:

FastStone Image Viewer: FastStone Image Viewer is a free, lightweight image viewing and organizing program. It has an intuitive interface and supports a wide range of image formats like JPEG, GIF, PNG, BMP as well as raw formats from major DSLRs. Useful features include batch editing tools, screen capture, color schemes, and the ability to view images in full screen slideshows.

Y99: Y99 is a free and open-source note taking and to-do app for Windows, macOS and Linux. It features a minimal interface, tabs for organization, Markdown support, and syncing capabilities across devices.

Both tools serve their respective audiences. Compare the features, pricing, and user ratings above to determine which best fits your needs.

Last updated: May 2026 · Comparison by Sugggest Editorial Team

Feature FastStone Image Viewer Y99
Sugggest Score — —
Category Photos & Graphics Office & Productivity
Pricing — Open Source

Product Overview

FastStone Image Viewer
FastStone Image Viewer

Description: FastStone Image Viewer is a free, lightweight image viewing and organizing program. It has an intuitive interface and supports a wide range of image formats like JPEG, GIF, PNG, BMP as well as raw formats from major DSLRs. Useful features include batch editing tools, screen capture, color schemes, and the ability to view images in full screen slideshows.

Type: software

Y99
Y99

Description: Y99 is a free and open-source note taking and to-do app for Windows, macOS and Linux. It features a minimal interface, tabs for organization, Markdown support, and syncing capabilities across devices.

Type: software

Pricing: Open Source

Key Features Comparison

FastStone Image Viewer
FastStone Image Viewer Features
  • Supports all major image formats (JPEG, TIFF, PNG, GIF, BMP, PCX, TGA, WMF, ICO, etc)
  • Powerful image viewing features (zooming, panning, rotating, scrolling, drag-and-drop, etc)
  • Many image processing tools (resize, crop, color adjustments, add text/watermark, etc)
  • Batch conversion tools for converting images between formats, resizing, renaming, etc
  • Screen capture tool
  • Slideshow function
  • Basic image editing (brightness, contrast, saturation, etc)
  • Support for RAW files
  • Thumbnail preview pane
  • EXIF and IPTC metadata viewer
Y99
Y99 Features
  • Minimal interface
  • Tabs for organization
  • Markdown support
  • Syncing capabilities

Pros & Cons Analysis

FastStone Image Viewer
FastStone Image Viewer

Pros

  • Free and open source
  • Intuitive and easy to use interface
  • Fast and lightweight
  • Supports many image formats
  • Lots of useful viewing, editing and organizing features

Cons

  • Lacks some advanced editing features of paid software
  • No cloud sync or storage features
  • No mobile app version
  • Limited batch editing capabilities compared to Lightroom
Y99
Y99

Pros

  • Free and open source
  • Available on Windows, macOS and Linux
  • Minimal interface promotes focus
  • Tabs keep notes organized
  • Markdown support for formatting
  • Syncing keeps notes up to date across devices

Cons

  • Limited features compared to paid note apps
  • No mobile app
  • Formatting options limited to Markdown
  • No collaboration features

Pricing Comparison

FastStone Image Viewer
FastStone Image Viewer
  • Not listed
Y99
Y99
  • Open Source

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FastStone Image Viewer
FastStone Image Viewer
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Y99
Y99
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