SimpleStreamOverlay Browser Bridge Privacy Policy

Last updated: 26 August 2026.

Purpose of the extension

The Browser Bridge has one purpose: to read live chat, supported emotes and live viewer-count information from YouTube, Twitch and Kick pages that the user opens in a supported browser, currently Microsoft Edge, Google Chrome or Mozilla Firefox, and make that information available to the SimpleStreamOverlay desktop application running on the same Windows device.

Information the extension accesses

When a supported live-stream page is open, the extension may access public live-chat messages, public chat display names, emote/image references, live viewer counts, and the URL, page title or channel identity needed to determine which supported stream page is open. The extension does not access payment-card details, passwords, licence keys, device credentials or the URL/title content of unrelated browsing pages.

How the information is used

The accessed information is used only to provide the user-facing overlay functionality requested by the user. Chat and viewer data is relayed to the locally installed SimpleStreamOverlay desktop application through a loopback-only connection on the same computer at 127.0.0.1. Under Mozilla's extension terminology, moving data from the Firefox extension into the local desktop application is treated as data transmission even though the data does not leave the user's device. The Browser Bridge does not send live-chat content, chat usernames, supported stream URLs or viewer counts to SimpleStreamOverlay cloud servers.

Firefox data-disclosure categories

For Mozilla Firefox, the Browser Bridge declares the data categories needed for its core local-overlay function: personal communications (live chat/social messages), personally identifying information contained in public chat author/display names, browsing activity limited to supported YouTube, Twitch and Kick stream/chat pages, and website content such as chat text, emotes and viewer-count information used by the overlay.

Firefox may also offer an optional technical and interaction data permission. This covers browser identity, aggregate browser-wide tab/window counts and diagnostic status events used by the local diagnostics interface. If the user declines that optional Firefox permission, those optional technical/interaction fields are suppressed; core supported chat and viewer functionality remains available.

Remote requests

The extension may request public livestream metadata from Twitch so that viewer counts can continue updating when a Twitch tab is in the background. It may also retrieve public emote or image files from the content-delivery domains used by YouTube, Twitch, Kick, 7TV, BetterTTV and FrankerFaceZ. These requests are used only to render the supported overlay content and do not intentionally include live-chat message text.

Storage and retention

The Browser Bridge does not maintain a cloud database of chat content and does not sell, rent or broker user data. Temporary in-memory queues and emote caches are used only as needed for reliable real-time delivery and rendering. The extension also stores a randomly generated per-install Browser Bridge authentication credential in browser-local extension storage so the local desktop application can reject unauthorised bridge connections. That credential is not an account password, licence key or advertising identifier and is not uploaded to SimpleStreamOverlay servers; it remains local until the extension's stored data is removed or the bridge pairing is reset.

Analytics and advertising

The Browser Bridge extension itself does not include Google Analytics, advertising trackers or behavioural advertising code.

User control

The user controls when the extension can operate by choosing which supported stream pages to open, by running or closing the SimpleStreamOverlay desktop application, and by disabling or uninstalling the Browser Bridge in Microsoft Edge, Google Chrome or Mozilla Firefox. Removing the extension stops its access to supported live-stream pages.

Third-party platforms

YouTube, Twitch, Kick and third-party emote providers operate under their own terms and privacy practices. SimpleStreamOverlay does not control those services.

Contact

Questions about the Browser Bridge or this policy can be submitted through the SimpleStreamOverlay support page.

Related policy

For website, account, payment and licensing information, see the main SimpleStreamOverlay Privacy Policy.