What is Data Wipe Tool?

Data Wipe Tool overwrites and clears sensitive data from local storage, form fields, and the clipboard. Use it on shared computers or after handling confidential information.

The tool wipes six targets independently: localStorage and sessionStorage keys, cookies for the current domain, IndexedDB databases, registered service workers, and the system clipboard. You pick a pass count (one to seven) and each value is overwritten with random data before being deleted, so the freed memory can't be recovered through a casual scrape of the next allocation.

How to use

1. Pick what to clear: localStorage, sessionStorage, cookies, IndexedDB databases, service workers, or the clipboard.
2. Click wipe — the tool overwrites values with random data before deletion for secure erasure.
3. Review the confirmation log showing what was cleared and the overwrite passes completed.

When to use

• After signing out of a shared library or hotel-business-centre computer.
• Before handing a laptop or phone to repair, resale, or a borrower.
• When debugging a site and you need a clean slate without clearing everything else this page has saved.

Result

After filling out a medical form on a library computer, wipe localStorage and clipboard to ensure no personal health data remains.

FAQ

Does this actually delete data from the disk, like a forensic wipe?

No. The tool clears the storage and clipboard this page can reach, then overwrites the slots before deletion. Full disk wiping requires OS-level tools that interact with the file system or SSD controller. This handles what this page can reach.

What do extra overwrite passes actually do?

Each pass writes a fresh batch of random bytes into the value before the key is removed, replacing any sensitive string that was sitting in memory. One pass is plenty for typical on-page storage. Higher counts help if you're worried about cold-boot memory scanning.

Can the tool clear cookies for other domains too?

No. A page can only read cookies set by the current domain. Cookies from other sites stay in place and can only be removed by visiting those sites or using your own privacy settings.

Will logging back into a site re-create everything I just wiped?

Often yes. Login flows write a fresh session token, cookie, or localStorage entry. The wipe removes what was there; staying signed out (or using a private window) is what keeps things clean afterwards.

Does the wipe also clear the page cache and visit history?

Partly. localStorage, sessionStorage, cookies, IndexedDB databases, and service workers are all cleared here. The HTTP cache and visit history sit outside the API a regular page can call, so for those open your privacy settings and use the built-in clear-site-data option.

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