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Head-to-head · Photo Viewer Software

FastStone Image Viewer vs Loupe

  • Updated Oct 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score FastStone Image Viewer #2 in Photo Viewer Software 9.1/10 Free plan Free plan✓ 5 of 5 features Visit FastStone
Loupe #8 in Photo Viewer Software 8.2/10 Free plan Free plan✓ 2 of 5 features Visit Loupe

FastStone Image Viewer leads on 0 checks, Loupe on 0, and 6 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreFastStone Image Viewer · 9.1/10
  • Free planboth
  • Most featuresFastStone Image Viewer · 5 of 5

FastStone Image Viewer scores higher on our rubric for photo viewer software: 9.1 against 8.2 out of 10; our editors rank them #2 and #8.

FastStone Image Viewer is the better fit for windows users wanting a free all-round viewer. Loupe is the better fit for linux users wanting a simple modern viewer.

  • FastStone Image Viewer fits best

    Windows users wanting a free all-round viewer

  • Loupe fits best

    Linux users wanting a simple modern viewer

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Side by side

Feature FastStone Image Viewer 9.1/10 Visit ↗ Loupe 8.2/10 Visit ↗
At a glance
Editor score 9.1 8.2
Ranking #2 in Photo Viewer Software #8 in Photo Viewer Software
Best for Windows users wanting a free all-round viewer Linux users wanting a simple modern viewer
Pricing model Free plan + paid Free
Starting price — Free plan
Free plan ✓ ✓
Free trial — —
Deployment Desktop Desktop
Platforms Windows Linux
Support Email, Docs Docs, Community
Built for Solo, Small business, Enterprise Solo, Small business
Features FastStone Image Viewer 5/5 · Loupe 2/5
RAW image support ✓ (best) Not checked yet
Side-by-side compare ✓ (best) Not checked yet
Contact sheets ✓ (best) Not checked yet
Color management ✓ ✓
Metadata viewer ✓ ✓
Specs
Supported platforms Windows linux
Our review
Pros
  • Supports camera RAW formats and EXIF metadata viewing
  • Compares up to four images and creates configurable contact sheets
  • Adds batch conversion, renaming, scanning, editing, slideshows, and portability
  • Free and open-source with file chooser, file manager, and drag-and-drop workflows
  • Shows image properties and embedded EXIF metadata
  • Includes crop, rotate, flip, zoom, trash, copy, and send actions
Cons
  • Commercial use requires a paid lifetime license
  • Available for Windows rather than multiple desktop platforms
  • Its broad toolset may be more than casual viewers need
  • Available on Linux rather than across multiple desktop platforms
  • Basic editing tools do not replace a full image editor
  • Format support can vary by system, with RAW support not established as standard
Our verdict

FastStone Image Viewer is a Windows desktop application for browsing, viewing, organizing, comparing, editing, converting, and presenting digital images. It suits Windows users who want more than a basic viewer, particularly photographers…

Read the review →

Loupe, also presented as GNOME Image Viewer, is a desktop application for opening, browsing, and viewing images on Linux. It suits users who want a simple viewer that can open files from a chooser, file manager, or drag-and-drop action,…

Read the review →
  1. FastStone Image ViewerPhoto Viewer Software 9.1Free plan
  2. LoupePhoto Viewer Software 8.2Free plan

Strengths and trade-offs

  • FastStone Image Viewer — where it wins

    • Supports camera RAW formats and EXIF metadata viewing
    • Compares up to four images and creates configurable contact sheets
    • Adds batch conversion, renaming, scanning, editing, slideshows, and portability

    Where it doesn't

    • Commercial use requires a paid lifetime license
    • Available for Windows rather than multiple desktop platforms
    • Its broad toolset may be more than casual viewers need
  • Loupe — where it wins

    • Free and open-source with file chooser, file manager, and drag-and-drop workflows
    • Shows image properties and embedded EXIF metadata
    • Includes crop, rotate, flip, zoom, trash, copy, and send actions

    Where it doesn't

    • Available on Linux rather than across multiple desktop platforms
    • Basic editing tools do not replace a full image editor
    • Format support can vary by system, with RAW support not established as standard
  • FastStone Image Viewer9.1/10 · Free plan

    A free Windows viewer with RAW support, comparison, batch tools, editing, and scanning.

    Visit FastStoneFull verdict →
  • Loupe8.2/10 · Free plan

    A free, open-source Linux viewer for straightforward browsing, metadata, and basic image edits.

    Visit LoupeFull verdict →

More comparisons

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update