Last updated: 12 November 2026. Applies to the UniSS browser extension (Manifest V3) on Chromium browsers and Firefox.
UniSS captures the visible area or a full web page, then lets you download, copy, or annotate the image. It runs entirely in the browser. There is no UniSS account and no UniSS server.
When you capture a page, UniSS reads the pixels of the active tab (HTTP or HTTPS only) and stores the resulting image locally so you can edit, copy, or download it. Settings such as capture mode, image format, quality, and interface language are also stored locally.
Storage keys live in the browser’s extension storage.local. Settings include unissMode, unissFormat, unissQuality, unissAutoCaptureOnClick, unissLocale, unissPageInfoBar, unissImageLightbox, and unissImageLightboxShift. Temporary Region snapshots and editor handoffs use separate unissCapture:<id> records. Region snapshots include viewport and source-tab information, expire after five minutes, and are removed after export, cancel, or page unload. Editor handoffs may also carry page element box coordinates (numbers only, no page text) for Crop edge snapping; they expire after thirty minutes and are consumed after successful image decoding; editor URLs contain only the handoff ID, not image data. Settings Clear temporary captures invalidates pending capture/handoff operations and live Region caches before deleting temporary records; already loaded editor images and drawings, settings, and downloaded files are not erased. A small unissCaptureEpoch invalidation token contains no image data. Expired or invalid records and the legacy unissEditImage, unissEditTs, unissRegionStash, and unissRegionTabId keys are cleaned on install/startup and popup initialization, without an alarms permission. Storage failures are not reported as successful Clear operations.
UniSS does not collect names, email addresses, passwords, payment details, location, browsing history, or analytics. It does not sell data, use data for advertising, or share data with third parties. Captures are not uploaded.
UniSS does not contact remote servers. The only fetches are packaged language files inside the extension (i18n/messages/*.json) via runtime.getURL. There are no remote scripts, CDNs, or trackers.
Image hover preview (optional, off by default): when you turn it on, a packaged script runs on web pages to notice when you hover an image and show it larger. It reads the hovered image’s address and size and, to find a larger version, links around the image and (on Google Images) the result data already in the page. Your browser then loads that larger version from the site that hosts it, the same request that opening the image on that page would make. UniSS itself sends nothing anywhere. When you press Save, the image address is handed to your browser’s own download manager, which downloads the image the same way as any download you start. Copy link puts the address on your clipboard. Edit downloads that image from its own site (without your cookies) into the extension’s local storage and opens it in the UniSS editor on your device. No data leaves your device through UniSS.
Data stays on your device until you clear it (for example by removing the extension or clearing extension storage). Uninstalling UniSS removes its local storage. Downloaded files are ordinary files you save; UniSS does not control those copies.
UniSS is a screenshot tool. It does not knowingly collect personal information from children.
If UniSS ever starts sending data off-device, this policy will be updated before that change ships, and store privacy disclosures will be updated to match.
Support: support@mutlusen.com.