Privacy policy
Last updated: 2 November 2026
The Dummio extension
Dummio fills web forms with made-up test data. It has no accounts, analytics, tracking or server, and it makes no network requests, so it collects nothing.
What it stores
- Settings (data locale, overwrite, password length and long text style) are saved with your browser's sync storage. If you sync your browser, it copies them between your own devices. Dummio never sees or sends them anywhere else.
- Site presets, the values you choose for a site, stay on this device only.
You can delete presets on the settings page at any time. Removing Dummio deletes everything it stored.
What it reads on a page
Dummio only touches a page when you click its button, press its shortcut or choose "Fill this field". It then reads the page's form fields (labels, names and formats) to decide what to fill, and writes made-up values into them. It doesn't read or keep anything else on the page, and nothing it reads is stored or sent.
Permissions
| Permission | Why it's needed |
|---|---|
activeTab | Fill the page you're on, only after you click, press or right-click |
scripting | Run the filler on that page when you ask |
contextMenus | Add "Fill this field" to the right-click menu |
storage | Save your settings and site presets |
Links
The extension links to GitHub, to report a problem, and to Ko-fi, to support the project. These open in a new tab only when you click them.
This website
If you choose Allow, this website uses Google Analytics to show how people find it and which buttons they use. Google receives details like the pages you view, your device and browser, the site that sent you here and your general location, and it sets cookies to recognise return visits. If you choose Decline, Google Analytics doesn't load.
Your choice is saved in your browser, so you only need to make it once. The site is hosted on Vercel, which handles the requests your browser makes to load it.
Questions
Open an issue on GitHub and I'll get back to you there.