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Installation

Pick a path. All of them give you the webrain binary; the first run of webrain install downloads the browser engine.
Then, in any terminal:

Manual download

macOS: swap webrain-linux for webrain-macos in the curl line.

Package managers

From source

Linux dependencies

Chrome needs system libraries on Linux. Install them before first run:
If you see “shared library” errors when running Chrome, that’s the missing-deps symptom — install the list above.

Updating

Detects your install method (Homebrew, Scoop, or manual) and updates automatically. For a cargo install:
Re-download engines after an update (the cache dir stays; versions are additive):

OS compatibility

Binary discovery is automatic on every OS: env override → PATH → ~/.lightpanda, ~/.obscura, ~/.local/bin → the webrain engine cache.