Privacy Policy for Dumbify

Effective date: September 2, 2026 Last updated: September 24, 2026

This Privacy Policy describes how the Dumbify browser extension (“Dumbify”, “the extension”) handles information. Please read it before installing or using the extension.

1. Who is responsible

Dumbify is published by Eden Rebello (“we”, “us”), the data controller for the purposes of this policy. Contact details are provided in Section 11.

1. Scope

This policy applies solely to the Dumbify browser extension. It does not apply to youtube.com, to Google LLC, or to any other website or service you may access while the extension is installed. Your use of YouTube remains governed by Google’s Privacy Policy.

1. Information we collect

We collect no information.

Dumbify operates entirely within your browser. It has no backend server, no account system, and no mechanism by which information could be transmitted to us. We do not receive, store, or have access to any data about you or your use of the extension.

Specifically, Dumbify does not collect, and we do not receive: personally identifiable information; authentication credentials or session tokens; browsing or watch history; search queries; financial or payment information; health information; personal communications; location data; or device identifiers.

1. Information stored on your device

Dumbify stores your display preferences locally on your device using Chrome’s extension storage API (chrome.storage.local). These preferences comprise: the on/off switch; theme, mode and accent colour; font, text size, line spacing and text colours; layout choices (feed layout, page width, sidebar, density, corners, which video details are shown, watch-page layout); wallpaper settings; and the wallpapers you upload - up to six images, animations or videos, each kept as you picked it (still images are resized and re-compressed first) with a small thumbnail and its main colours. Deleting an upload from the wallpaper gallery removes it from storage; resetting your settings leaves your uploads in the gallery until you delete them.

So that pages open in your theme without a flash of the default one, Dumbify also keeps a small copy of the resulting colours and layout names in the browser’s local storage for youtube.com, and for the extension’s own pages. This copy contains no wallpaper and nothing about you or your use of YouTube.

This information remains on your device. It is not transmitted to us or to any third party, is not synchronised across your devices, and is not accessible to us at any time. Exporting a settings backup writes the same preferences to a file on your device that you choose; Dumbify does nothing further with it.

1. Interaction with YouTube

Dumbify runs only on pages under https://www.youtube.com/. On those pages it reads data that YouTube has already delivered to your browser and issues requests to YouTube’s own endpoints, including its InnerTube API, in order to display videos, search results, comments, and subscription status.

These requests are directed exclusively to YouTube and are equivalent in destination to those youtube.com issues on its own behalf. Your browser attaches your existing YouTube session cookies to them, as it does for any request to that domain. Consequently, where you are signed in to YouTube, Google receives those requests as originating from your account.

For actions requiring authentication, such as posting a comment or subscribing to a channel, Dumbify computes a request authorisation header derived from your existing session cookie. This value is computed in memory at the time of the request and is not stored, logged, copied, or transmitted to any party other than YouTube.

Dumbify transmits no data to any destination other than YouTube. It contains no analytics, telemetry, crash reporting, advertising, or tracking functionality of any kind.

1. Permissions

Dumbify requests the minimum permissions necessary to function:

Permission Purpose
storage To save your display preferences locally on your device.
unlimitedStorage To let a wallpaper animation or video larger than Chrome’s default 10 MB extension storage allowance be saved locally. It grants no access to anything else.
scripting To read YouTube’s own page data (ytInitialData, ytcfg) in order to render the simplified view.
Host access to https://www.youtube.com/* To operate on YouTube pages. The extension has no access to any other website.
7. Disclosure, transfer, and sale of information

We do not sell, share, rent, transfer, or otherwise disclose personal information, because we do not collect any. We do not use any information for purposes unrelated to the extension’s single stated function, and we do not use or transfer information for the determination of creditworthiness or for lending purposes.

1. Retention, deletion, and your rights

Preferences stored under Section 4 are retained on your device until you delete them. You may return your preferences to their defaults at any time with the reset control on the extension’s options page, and delete any uploaded wallpaper from the wallpaper gallery on the same page. Clearing the extension’s storage through your browser’s settings, or uninstalling the extension, deletes all of it permanently - except the small copy of colours and layout names kept in youtube.com’s own site storage (Section 4), which contains nothing about you and is cleared with that site’s data.

Because we hold no personal data concerning you, there is no data against which rights of access, rectification, erasure, portability, restriction, or objection under the EU/UK General Data Protection Regulation, or rights to know, delete, or opt out of sale under the California Consumer Privacy Act, could be exercised. You retain full and direct control over the locally stored preferences described above. Should you wish to raise any question regarding your rights, you may contact us using the details in Section 11.

1. Security

Because Dumbify neither transmits nor retains information outside your device, the data described in Section 4 is protected by your browser’s own extension storage isolation and by the security of your device. We hold no information that could be exposed by a compromise of our systems, as no such systems exist.

1. Children’s privacy

Dumbify is not directed to children under the age of 13, and we knowingly collect no information from any user, irrespective of age.

1. Contact

Questions or concerns regarding this Privacy Policy may be directed to:

edenvrebello@gmail.com

1. Changes to this policy

We may update this Privacy Policy from time to time. Any revised version will be posted at this URL bearing an updated “Last updated” date, and where the changes are material, we will indicate this in the extension’s release notes. Continued use of the extension following the posting of a revised policy constitutes acceptance of it.

1. Verification

Dumbify is open source. Every statement in this policy may be independently verified by inspecting the source code:

https://github.com/edenreb/dumbify