Lingban AI

Lingban AI works as a browser extension that lets you select text on any webpage to trigger AI explanations, summaries, translation, or rewriting. It also offers AI search, bilingual document translation, file summarization, and code generation/optimization, covering study, office, and development needs. It is completely free and requires no VPN, with fast response, clean UI, and cross-device history sync. It can handle large files for translation and summarization, and provides writing templates. Current evidence is limited to user recommendations and lacks independent long-term reviews; future pricing is unclear, and functionality breadth may mean less depth in specialized tasks. It suits students, educators, content creators, and junior developers in China who need a daily AI assistant without VPN hurdles, but is not ideal for professionals needing top-tier translation or code audit accuracy. It costs nothing to start; just install the browser extension or use the web version.