The Imageviewer core is a libretro core for RetroArch whose documented purpose in the official documentation is simply to view images. This article summarizes the official documentation page for the core, covering its authorship, license, the features it reports as supported and unsupported, and how that limits what you can expect from it.
What the Imageviewer core is
According to the documentation, the Imageviewer core is authored by The RetroArch Team and is distributed under the MIT license. The page's background section describes its function only as viewing images, without listing specific image formats or workflows on the portion captured here.
Documented feature support
The documentation includes a support table for the core. Of the features it lists, only Controls and Screenshots are marked as supported. Everything else in the table is marked unsupported, including Restart, Saves, States, Rewind, Netplay, Core Options, Memory Monitoring for achievements, RetroArch Cheats, Native Cheats, Remapping, Multi-Mouse, Rumble, Sensors, Camera, Location, Subsystem, Softpatching, Disk Control, Username, Language, Crop Overscan and LEDs.
What the support table means in practice
Because the core is documented as not supporting saves or save states, it should not be expected to retain progress or session state. With rewind, netplay, remapping and core options all marked unsupported, the documented behavior is a straightforward image viewer rather than a configurable or shareable session. Controls being supported means input handling is part of the core's documented feature set, though the captured documentation excerpt does not show the individual control bindings.
Authorship and licensing
The core is credited to The RetroArch Team and licensed under the MIT license. The documentation points to a broader summary of licenses behind RetroArch and its cores for additional context.
Reference table · Scroll horizontally to see all columns.
| Feature | Documented support |
|---|---|
| Controls | Supported |
| Screenshots | Supported |
| Restart | Not supported |
| Saves | Not supported |
| States | Not supported |
| Rewind | Not supported |
| Netplay | Not supported |
| Core Options | Not supported |
| Remapping | Not supported |
| Multi-Mouse | Not supported |
| Rumble | Not supported |
| Sensors | Not supported |
| Camera | Not supported |
| Location | Not supported |
| Subsystem | Not supported |
| Softpatching | Not supported |
| Disk Control | Not supported |
| Username | Not supported |
| Language | Not supported |
| Crop Overscan | Not supported |
| LEDs | Not supported |
| Memory Monitoring (achievements) | Not supported |
| RetroArch Cheats | Not supported |
| Native Cheats | Not supported |
Sources & references
Content responsibility: FrameTinker editorial desk. Source authors and software maintainers are credited separately below; this is not a claim of hands-on testing.
Published .
RetroArch: imageviewer — official gaming software documentation https://raw.githubusercontent.com/libretro/docs/master/docs/library/imageviewer.mdRetrieved Oct 25, 2026Something doesn’t match your setup?
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