This extension can remember the form and refill the form again any time. It remember the form per site and not per field purpose.will remember your form per site (exact URL) and will inject it as you commence editing it.
Instraction:
1. Fill out the form in the site
2. Click the "save form" button
3. When you enter the form again click on "Inject form"
4. If you want to delete the form click the "delete saved form" button
All the data of the form is saved on your computer and no one has access to the form but you