Extensions

Sval runs Manifest V2 and Manifest V3 extensions from addons.mozilla.org. The controls below install them, turn them on and off, and limit where they run.

Extensions on the toolbar opens the extensions menu. The button shows a dot when an extension offers a button for the page you’re on, or when the menu has a notice.

Each extension has a row with its name. On a page with a site, an extension that can reach the site also shows:

What it can do on the site. The row says, for example, “Can read and change pages on” the site, or that it can see the site’s connections, read and change its cookies, or see which of its pages you open. An extension that’s off there “Can’t see or change anything”.
Run on turns the extension on or off for the site. Turning it off reloads the site’s tabs.

Each row may also show:

The extension’s page button shows when the extension offers a button for this page, such as a feed reader on a page with a feed. Selecting it does what the extension’s button does.
Pin to the toolbar puts the extension’s button on the toolbar. It reads Unpin from the toolbar while the button is there. A pinned extension stays in the menu.

On a page whose address has a part before the site’s name, such as app.fastmail.com, a Run on line at the top of the menu chooses what the switches cover: that address alone, or All of fastmail.com.

Private windows don’t show what an extension can do or the Run on switch.

Notices show at the top of the menu, and the extensions button shows a dot until you’ve seen them.

An extension was added. OK closes the notice. Pin to toolbar pins the extension’s button.
An extension sees only one Workspace. An extension that hides tabs might not work as expected, because it only sees the tabs in the current Workspace. Remove removes it, and Keep keeps it.
An extension was turned off. Sval turns off an extension that uses containers. Remove removes it, and OK keeps it turned off.
A password manager couldn’t be installed. Try Again installs it again.

Settings › Extensions

Extension updates

Days to wait before installing extension updates is how long Sval holds an update it finds before installing it. It starts at 7. 0 installs updates right away, and the longest wait is 365 days. Your other devices use the same number.

Installed

The list shows every extension by name, with its description.

A name opens the extension’s page.
The switch turns the extension on or off. An extension another program installed asks for its permissions the first time you turn it on.
Install from file… installs an extension from a file on your computer.
Open the full extensions page opens the add-ons page in the same tab.

Installing from websites

Show warning when websites try to install extensions asks before a website installs an extension.
Choose which websites can install extensions lists the sites allowed to install without the warning.

An extension’s page

In Settings › Extensions, selecting an extension’s name opens its page.

Extension

On turns the extension on or off, and shows its version.
Run in private windows lets the extension run in private windows, where it can see what you do. It shows Never for an extension that can’t run there, and Always for one that must.
Update waiting shows when Sval is holding an update, with its version and the date it installs. Update now installs it at once.
Its own settings shows for an extension with settings of its own while it’s on. Options opens them in a new tab.

Permissions

The list says what the extension can do, in the words of the prompt you saw when you installed it. Each optional permission has a switch, marked Optional. An extension that asks for none says It asks for no permissions.

Sites where this extension is off

A site is listed with its switch off. Turning it on lets the extension run there again.
Turn it off on a site takes a site’s address, and Turn off turns the extension off there.

Your switches sync to your other devices.

Remove

Remove opens a dialog that asks before it deletes the extension and its data from this device. The card doesn’t show for an extension Sval can’t remove.

Settings › Sites

A site’s page has an Extensions card, which lists every extension that can reach the site, each with its switch for the site.

Settings › Keyboard shortcuts

Each extension with shortcuts has its own group, which lists them. Change in the extensions page opens the page where you change them.

Extensions Sval doesn’t install

Themes. Sval draws its own colors, and says “Sval doesn’t support themes.”
Extensions that use containers. Sval cancels the install and suggests isolated Workspaces instead.