FlashBanGet FlashBan for Chrome.
FlashBan isn't in the Chrome Web Store yet, so you install it by hand: download one zip, check it, and load it in Chrome. It takes about two minutes.
The file
The download hasn't been built on this copy of the site. In the project folder, run node site/build.mjs, then reload this page.
- Version
- File
- Size
- SHA-256
- Built from
- commit
- Permissions
SHA-256 is this ZIP’s digital fingerprint. Calculate the fingerprint of your downloaded file using the steps below, then compare it with this value. Every character must match. A match verifies that you have the published file; it does not prove the software is safe.
Requires Chrome 116 or newer on a desktop computer (Windows, macOS, Linux or ChromeOS). Not a medical device: FlashBan reduces exposure to flashing content and can't guarantee protection.
Install it
Unzip the download
You get one folder named
flashban-0.1.0. Keep it somewhere it won't be deleted: Chrome loads FlashBan from that folder every time it starts.Open the extensions page
Type
chrome://extensionsin the address bar and press Enter.Turn on Developer mode
The switch is at the top right of the page.
Choose Load unpacked
Pick the
flashban-0.1.0folder (the one that containsmanifest.json).Pin FlashBan
Click the puzzle-piece icon in the toolbar and pin FlashBan, so its popup and the "!" lockdown badge are easy to see.
Check the file before you load it
An extension can read the pages you visit, so make sure the zip is the one we built. Compare its SHA-256 with the one above: they must match exactly.
Windows (PowerShell)
Get-FileHash .\flashban-0.1.0.zip -Algorithm SHA256macOS
shasum -a 256 flashban-0.1.0.zipLinux
sha256sum flashban-0.1.0.zipOr rebuild it yourself
“Reproducible build” means the same source code and build steps produce an identical ZIP, byte for byte, with the same SHA-256 fingerprint. Build from the commit shown above and compare the result with the published fingerprint. No dependencies, just Node.
git clone https://github.com/dribeiro0/FlashBan.git
cd FlashBan
git checkout the commit shown above
node site/build.mjsWhy it asks for these permissions
| Permission | What FlashBan uses it for |
|---|---|
<all_urls> (read and change site data) | To see flashing on any page you visit and to put its labels and panels over it. Pages are read on your computer; nothing is sent anywhere. |
storage | Your settings, and the local log of domains that flashed (30 days). |
scripting | Only for lockdown: adding browser-level styles that a hostile page can't remove. |
Update or remove
- Update
Download the new zip, check it, unzip it over the old folder, then press the reload arrow on FlashBan's card in
chrome://extensions. - Remove
Press Remove on FlashBan's card. Its settings and log are deleted with it.
- Pause on one site
Open the popup and switch off "Protect this site", or use "Show original on this site" in FlashBan's bar on the page.