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.

FeatureDocumented support
ControlsSupported
ScreenshotsSupported
RestartNot supported
SavesNot supported
StatesNot supported
RewindNot supported
NetplayNot supported
Core OptionsNot supported
RemappingNot supported
Multi-MouseNot supported
RumbleNot supported
SensorsNot supported
CameraNot supported
LocationNot supported
SubsystemNot supported
SoftpatchingNot supported
Disk ControlNot supported
UsernameNot supported
LanguageNot supported
Crop OverscanNot supported
LEDsNot supported
Memory Monitoring (achievements)Not supported
RetroArch CheatsNot supported
Native CheatsNot supported
Evidence and publication details

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, 2026

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