PRIVACY & DATA CONTROL
Your run stays in this browser.
The application reads selected files and computes results locally in a Web Worker. It does not send JTL content, filenames, labels, settings or notes to a server, an analytics provider or an AI service. It does not execute files or contact URLs contained in them.
Default: session memory
No run is saved automatically. Closing or refreshing the page discards the in-memory workspace. Importing another valid file replaces only the selected run; invalid files preserve the current run. A new project clears session data after confirmation.
Explicit persistence
After preparing a review, you may download a full JSON backup or click “Save full project on this browser.” Both include original files, filenames and review settings. Browser snapshots are stored in localStorage under this application’s project-specific namespace. Other people using this browser profile can access them. Browser clearing and storage limits can remove or prevent saves; a downloaded backup is your durable recovery option.
Browser saves are opt-in snapshots, never autosave. Use the Browser saves control to reopen or delete each snapshot. Delete removes that browser snapshot, not an open session, previously exported downloads or copies held elsewhere. Restored projects receive a fresh identity to avoid overwriting an existing saved project.
Network and hosting
The hosted version must load its own HTML, CSS, JavaScript and favicon. No external fonts, tracking, advertisements, third-party scripts or content-processing network calls are used. A content security policy blocks the app’s data connections. Hosting may process ordinary access metadata and its owner-access authentication; this application does not control the hosting provider’s access logs. The application never places your source content or filenames in navigation URLs or console logs.
Help links lead to external source websites only if you choose to open them. Those websites have their own privacy practices. “Local processing” does not mean the initial hosted page can be fetched without a network. The delivered source package can instead be served from a local static server without external dependencies; no service-worker offline cache is installed.
Exports need review
Default HTML and metrics exports exclude the original JTL, filenames, unused columns and hidden raw payloads. Optional label aliases affect their display labels. Recipes require original labels to replay selection. Conditions, notes and aliases can still contain sensitive text, so inspect the preview and files before sharing. Aliases are not a guarantee of anonymization.
Backups explicitly contain original data. This tool cannot remove downloaded or shared copies, secure your device, or verify your authorization to process a dataset. No data is submitted for model training by this application.