Singlefile uses the browser it's running in to execute all the JS before saving. The Singlefile CLI runs a headless browser to do the same. Most tools that can

Singlefile uses the browser it's running in to execute all the JS before saving. The Singlefile CLI runs a headless browser to do the same. Most tools that can handle JS use puppeteer, playwright, or chrome headless directly. ArchiveBox uses Singlefile and Chrome headless directly for screenshot, PDF, and HTML saving, though we may switch to playwright soon. The best currently for high-fidelity with JS support is ArchiveWeb.page/Browsertrix though, they use puppeteer under the hood with a lot of magic to even make embedded YouTube videos work in the native player on replay.