Privacy policy

File processing

SOMKYU Converter is operated by LTLT. Selected files and conversion results are processed in your browser and are not uploaded to our server. Working memory is released when the page closes. Downloaded files remain on your device.

Essential settings and local storage

Local storage holds language (conv-lang), theme (conv-theme) and analytics choice (conv-analytics-consent-v2). The video engine may be cached in IndexedDB (ffmpeg-engine) or Cache Storage (ffmpeg-core-cache-v2). The language is set by the page address (/en/, /ja/, /es/). If your browser language differs, the page only shows a notice that another language is available; no external IP lookup is used. You can clear these values and the engine cache in browser site settings.

Optional analytics

Google Analytics loads only after you choose “Allow analytics”. Google may process visited pages, visit time, browser/device details and cookie identifiers. Network requests use an IP address. We do not send selected file contents, names or conversion results as analytics events. Google Signals and ad personalisation signals are disabled. Declining does not limit tools. Change your choice via “Analytics & cookies” in the footer. Withdrawal attempts to clear this site’s Analytics cookies and reloads without the tag; it does not retroactively erase previously sent data.

External resources

The font (Pretendard), audio/ZIP libraries and the video engine load from CDNs (jsDelivr, cdnjs, unpkg). Providers receive IP and browser request information; these requests do not upload your selected files. See Google’s privacy policy below.

Third-party advertising and cookies (Google AdSense)

This website uses third-party advertising services, including Google AdSense. Third-party vendors, including Google, use cookies to serve ads based on a user’s prior visits to this website or other websites. Google’s use of advertising cookies enables it and its partners to serve ads to users based on their visit to this site and/or other sites on the Internet.

You may opt out of personalised advertising by visiting Google Ads Settings, or opt out of a third-party vendor’s use of cookies for personalised advertising at www.aboutads.info. Ad requests use the page address and browser information, but the contents, names and conversion results of your selected files are never passed to advertising providers.

Contact and your choices

We use your email address and message to answer support requests and delete them within three years after handling, under our existing operating policy. Contact support@ltlt.co.kr to request access or deletion. Clear local preferences and engine caches in browser settings. The privacy contact is representative Minkyu Song.