Before you send, mask it.

Turn on the switch at the top.

Off stops replacements. Even when on, trusted sites and fields outside the configured scope are excluded.

Select a region and toggle the detection types shown.

The region filters the choices displayed. Enabled types from other regions still apply. Register names and company names as custom rules.

Select a category and add a rule. For example, set Before to Alex Example and After to [NAME].

Enabled matching words are replaced with your chosen text. An empty replacement deletes the matched word. Turn a rule off to keep it saved without applying it.

Add a category to organize rules. Custom categories can be renamed or deleted.

Categories organize the list; enabled rules in other categories still run. Confirming a category deletion also deletes its rules.

Open the trial and run masking on its sample.

The trial uses its own standard detection settings, not your saved rules. Test your own configuration with fictional text in a targeted field on a supported page.

Add a domain and choose all input fields or disabled.

This changes scope for that site. Removing the entry returns it to behavior determined by AI auto-enable, registered fields and other settings.

Use a site’s exclusion control to stop masking there.

This adds a disabled per-site rule. Turning the master switch back on does not remove that exclusion.

Add a host to stop masking there; remove it to lift the exclusion.

Matching sites are excluded even if other scope settings would enable them. After removal, check that the master switch and field scope are enabled.

Add a rule such as EMP-[0-9]{4} with replacement [EMPLOYEE ID].

Matching strings are replaced. Invalid expression edits are not saved. Review patterns that produce a performance warning.

Normally keep the default 50ms and automatic disabling enabled.

Asynchronous expression processing stops when its time limit is exceeded and attempts to disable the responsible heavy rule. This does not mean every rule completed. The synchronous pre-send path behaves differently.

Normally keep the default 200000.

Text exceeding the limit can be skipped entirely and remain unchanged. Reducing the limit does not guarantee that its beginning will be masked.

Export a JSON file. To restore it, choose that file with Import.

Imported settings overwrite corresponding current values and reload the page. Review imported rules and trusted sites. Temporary pauses are not transferred. Exported files contain your registered words.

Enable it and choose the delay in milliseconds after typing stops. The default is 120ms.

Text is replaced after that delay; increasing it postpones replacement.

Enable each desired trigger. For pre-send only, turn off the other three triggers.

Masking runs when the corresponding action is detected. With all triggers off, those actions do not start masking. Some sites’ send actions cannot be detected.

Enable width normalization.

Custom word matching treats width variants alike. A rule for secret can also match ｓｅｃｒｅｔ.

Enable this to target supported AI sites automatically.

Supported sites’ fields become targets. Turning it off keeps manual site rules and registered fields.

On the target page, open the popup, choose Register an input field, and click the field. In settings, choose this URL or the whole site.

The registered field is targeted within that scope. Whole site reuses that field registration across the site; it does not target every field. Deleting the entry removes that registration.