Spiel

Spiel reads any article, blog post, PDF, or selection aloud with a natural neural voice. Unlike every other text-to-speech extension, everything runs entirely on YOUR computer. Nothing you read is ever sent to a cloud server. WHY SPIEL • 100% private — text-to-speech happens locally at 127.0.0.1. Turn off Wi-Fi and it still works. • Free forever — no account, no subscription, no trial. Open source (MIT). • Natural voices — powered by the Kokoro-82M neural TTS model. FEATURES • One click to listen on any article or PDF (research papers included) • Word-by-word highlighting that follows the voice, with auto-scroll • Click any paragraph to listen from there • Select text on any page to read from there to the end • 4 curated voices (American/British, male/female), speed up to 3× • Time-remaining estimate, smart skipping of URLs and [references] • Dark mode throughout SETUP (one extra step, ~2 minutes) Spiel's voice engine runs on your own machine — that's the whole point. After installing this extension, the popup shows a one-line Terminal command that installs the engine. Paste it, wait two minutes, and your Mac will literally say "Spiel is ready." Requires macOS; Apple Silicon recommended. Open source: https://github.com/preet01/spiel