Requirements

• Rust as pinned in rust-toolchain.toml for local builds
• Chrome, Chromium, or a managed browser install (auditmysite browser install)
• macOS, Linux, or Windows for released binaries

auditmysite requires a browser to be present at run time. It does not download or install one automatically — it reports an error and exits if none is found. To install a managed Chrome for Testing into ~/.auditmysite/browsers/:

auditmysite browser detect                    # show what's found
auditmysite browser install --headless-shell  # smaller; fallback only (see below)
auditmysite browser install                   # download Chrome for Testing (opt-in)

On macOS, batches with keyboard journeys audit one page at a time when a full browser is used: Chrome runs the AppKit event loop even in headless mode, and keyboard events a page does not consume go through it on the browser’s main thread; with several pages at once that can stall the whole browser. --concurrency overrides this. The headless shell is not affected, but sites with bot protection may serve it a challenge page, so it is only used when no system browser is found.