Hello LG webOS TV Developer Team,
LG Seller Lounge referred us to this forum on October 15, 2026, after we submitted an inquiry under Partnership → Business Partnership.
We are developing screenRIG Player, a standalone packaged HTML/CSS/JavaScript application targeting LG consumer webOS TVs from model year 2025 onward, with public installation and updates through LG Content Store.
The app displays images, videos, HTML applications, iframes, live streams, audio and advertising in mixed layouts. It needs to remain continuously visible in the foreground without periodic remote input, while supporting remote interaction and locally cached offline playback where the content permits it. It must run directly on the TV without an external computer or renderer.
What we observed
During exploratory testing:
- An image slideshow triggered the screensaver.
- A Screen Wake Lock request was denied with
NotAllowedError. - Fullscreen H.264 video remained visible for more than ten minutes without remote input.
The test device was an LG 43UT7590PUA, model year 2024, running firmware 33.31.75. This is exploratory evidence only; we have not yet validated the behavior on our target 2025+ models.
We reviewed the screensaver documentation and understand the fullscreen-video exception and the OLED options that extend the timeout with reduced brightness. Fullscreen video alone does not cover our image, HTML application and mixed-layout requirements.
Questions
- Is continuous unattended foreground display of non-video and mixed content supported for third-party apps on consumer webOS TVs? Is partner approval or an app-specific entitlement available?
- If supported, what documented APIs, app configuration, ACG permissions and entitlement procedures are required?
- Which 2025+ model families, LCD/OLED displays, regions and webOS versions support this behavior? What mandatory dimming, timeout or display-protection restrictions remain?
- Does the supported mechanism work offline, and how should it be restored after app termination, TV restart, firmware updates or app upgrades?
- Can an app using this mechanism be publicly distributed through LG Content Store? What review or contractual requirements apply?
- If this requirement is unsupported on consumer TVs, could you explicitly confirm that limitation and identify the appropriate commercial webOS display family?
We are seeking an LG-approved implementation that complies with display-protection requirements. We can provide a minimal image-slideshow reproduction package and further test details if needed.
If partner-specific guidance cannot be discussed publicly, please identify the appropriate private contact or application process.
Thank you,
Kai Fan
TelemetryTV / screenRIG