Privacy Policy - Leta Go UltraWide
Last updated: July 26, 2026

Leta Go UltraWide is a browser extension for Chrome, Edge, Brave, and other Chromium-based browsers that finds black bars around a playing video and crops, zooms, or stretches the picture to fill its own box.

Summary
This extension does not collect, transmit, sell, or share any personal information. There is no analytics, no crash reporting, no telemetry, and no update-check pings of any kind - the extension never contacts any server, including one of its own. To find black bars automatically, it does briefly look at the pixels of the video you are watching, entirely inside your own browser; the next two sections explain exactly what that means and why it never leaves your device. The only data it stores is five small settings (crop mode, zoom level, stretch on/off, crop alignment, and whether the extension itself is turned on), and that data never leaves your browser.

What data is stored, and where
The extension stores exactly five values, using the browser's built-in chrome.storage.local API (not chrome.storage.sync - these settings stay on this device and are not carried through your browser account's sync):

Your chosen crop mode (auto detect, off, or one of the fixed ratios)
Your chosen zoom level
Whether stretch is used instead of crop
Your chosen crop alignment for fixed-ratio modes (center, or biased to one edge)
Whether the extension itself is enabled or disabled
This storage is provided by the browser itself, not by us. Because it uses chrome.storage.local rather than the sync variant, the browser vendor does not carry this setting across your devices the way it might sync your bookmarks. The extension developer never receives, sees, or has access to this data on any server, because no such server exists for this extension.

What the extension accesses, and why
To find and crop the right video, the extension runs on every page and every frame - there is no way to know in advance which site, or which frame on that site, has the video player. On each page it looks for a video element (a short list of known player selectors first, then the largest visible one as a fallback) and, once found, applies a CSS crop to that element. It does not read page text, forms, cookies, page navigation, or anything else on the page - only the video element it is trying to crop.

When "Auto detect" mode is active, the extension draws the currently playing video frame onto a small offscreen canvas inside your browser and checks its brightness along each edge to work out where any black bars are. That pixel data is used immediately to decide on a crop, is never written to storage, never leaves your device, and never reaches any server, ours or anyone else's. Fixed ratio modes (4:3, 16:10, 16:9, 2:1, 21:9, 2.39:1) don't do this at all - they only read the video's own encoded width and height, not its pixels, and crop to the chosen ratio directly.

On sites that serve video through a protected or DRM-secured rendering path, the browser itself blocks this kind of pixel access, and the extension fails quietly with no crop applied in Auto detect mode there (fixed ratio modes are unaffected, since they don't need pixel access at all).

Link to letalab.eu
The extension's popup includes a plain link to letalab.eu, which opens in a new browser tab. The link itself carries no tracking script or tracking parameters - clicking it is no different from typing the address yourself. Once you're on that site, its own privacy practices apply, separately from this extension.

Third parties
We do not share data with any third party, because we do not collect any data to share. The extension embeds no third-party analytics, advertising, or tracking scripts, and loads no remote code - every file that runs is shipped inside the extension package itself.

Permissions
The extension requests the storage permission (to remember your settings) and runs a content script on all sites and frames, which is what lets it find and crop a video wherever it happens to be playing. It does not separately request the broader host_permissions grant - the content script's own site list already covers what it needs. Nothing else is requested: no tabs, no activeTab, no cookies, no scripting, no webRequest.

Security
The extension's full source ships inside the package you install - nothing is downloaded or evaluated at runtime. We welcome responsible security review; if you find a problem, please report it privately and with enough detail to reproduce it, via the contact below.

Children's privacy
The extension is not directed at children and does not knowingly collect information from anyone, regardless of age, since it does not collect information at all.

Changes to this policy
If this extension's data practices ever change, this page will be updated before the change takes effect, and the "Last updated" date above will be revised accordingly.

Contact
Questions about this policy, the extension, or a security report can be sent via letalab.eu.