Explain This (On-Device AI)

Explain This (On-Device AI) is a UserScript on the Customaise marketplace.

Select any text on any page for an instant plain-language explanation from on-device AI. Explain, simplify, ELI5, define, or translate. Free and private.

Select any text on any page and get an instant plain-language explanation from on-device Gemini Nano (CM_promptAI). A small Explain button appears by your selection (or press Alt+E) and a panel streams a clear explanation beside it. Switch lens with one click: Explain, Simplify, Key points, ELI5, Define a term, or Translate into your language. Useful for dense legal or medical text, jargon, error messages, or anything you want in clearer words. Everything runs locally: the selected text never leaves your machine, so it works on private pages a cloud tool could never see. Free, private, no API…

What does Explain This (On-Device AI) do?

Select any text on any page for an instant plain-language explanation from on-device AI. Explain, simplify, ELI5, define, or translate. Free and private.

Is Explain This (On-Device AI) reviewed by Customaise?

Yes. Every marketplace listing on Customaise is reviewed before going live, including the source code, the @connect domains, and (for AgentScripts) the @webmcp tool surface.

Is Explain This (On-Device AI) free?

Yes. Customaise is free to use; the Power User subscription unlocks higher monthly token limits and the MCP bridge but is not required to install marketplace UserScripts.