Lexal

Lexal takes a deliberately lightweight approach to AI in the browser. Rather than opening a chat tab, it rides on the right-click context menu: select a sentence, choose a function, and Gemini responds in a small overlay. That keeps you in the flow of whatever you are reading instead of switching between windows.

The extension bundles four related reading aids. Fact check tests a claim against the model's knowledge; Bias check examines how a piece of writing frames its subject; Summarise/TLDR compresses long content into a short overview; and the debate mode deliberately argues both for and against a proposition, which is useful for pressure-testing an argument before you repeat it. All of these return output in the browser's current language.

Architecturally, Lexal is honest about what it is: a standalone wrapper around a large language model. It does not run its own inference or resell tokens — you paste in your own Google Gemini developer API key, and the extension simply calls that model under your own quota. The developer states that no user data is collected, sold or shared, which is a sensible posture for a tool that needs access to whatever text is on your screen. It is a small, focused utility rather than a full AI assistant, and it is best judged as such.