Local does not mean anonymous when you share a file.

The comparator has no account, trace-upload endpoint or application analytics. A downloaded replay package contains the data you explicitly chose to include.

Reviewed October 15, 2026 · Pinned npm clients 0.0.59 and 1.0.2 · Original local fixtures

Page memory and workers

The capture, context, selected plan and observations remain in browser memory. Each SDK runs in a dedicated Worker that terminates afterward. The application does not retain captures in cookies, localStorage or sessionStorage. Clearing the page or reloading discards its in-memory state.

Captured URLs are never opened by the comparator. Tool arguments are never executed. Any HTML-like text is displayed as text. The tool does not accept server endpoints, API keys or executable middleware.

Static hosting requests

Cloudflare receives ordinary requests for the page and fixed same-origin assets, including SDK bundles and export support files. Those requests expose normal network and HTTP metadata to the hosting infrastructure. A comparison does not send captured events to a remote agent or model.

Explicitly unredacted downloads

The download requires you to choose inclusion of the original capture and results. It contains source text, parsed events, initial context, messages, state, diagnostics, reviewed wire branches and a report. If your capture has personal data, secret material or identifiers, the package has them too. There is no automatic redaction claim.

Clear page data when finished and remove downloaded files you no longer need. Clearing the page cannot remove files saved on your device. The offline Node harness uses the included SDK bundles and a local fetch override; it needs no model credentials or network endpoint.

Optional outbound links

Official sources open their publishers’ sites. WebTraceCheck and CleanTempMail links add site/topic/placement campaign labels, never the capture or result. Those services operate separately. Questions can be sent to support@cleantempmail.com; review a replay package before attaching it.