Lensel: AI Sidebar – AI Anywhere on Any Page

AI on your sidebar. Highlight text to ask questions instantly with full context, or autofill inputs with smart suggestions.

Lensel is an on-page AI companion built for people who read, research, code, or work across the web every day. Instead of switching tabs or copying text into another chatbot, Lensel stays in your browser sidebar and works directly with the page you are looking at. Highlight anything you want to understand better, whether it is a paragraph, a tricky sentence, a block of code, a research excerpt, a forum post, or text inside a screenshot. Lensel reads it and gives you help right where you need it. Lensel understands the page you are on. It can read the entire article or document to provide grounded, context-aware answers, so you never have to paste extra information or re-explain what you are viewing. If you are working through a long tutorial, a research paper, an API reference, or a complex support thread, Lensel can summarize it, explain key ideas, outline the structure, or make the content easier to work with. You can also use Lensel to autofill inputs directly on the page. Whether you are writing a reply, filling out a form, drafting an email, or responding to a prompt, Lensel can generate and insert text for you using the context of the page. The sidebar stays available with a simple click, allowing you to keep your focus on the tab you are already using. Lensel adapts to whatever task you are doing so you can stay in your workflow while it assists directly on the page. Common ways people use Lensel include: • Asking questions about any text online. Lensel can explain ideas, define terms, break concepts into steps, clarify confusing writing, or translate text. • Summarizing long articles, papers, documentation pages, transcripts, or PDFs into short, readable notes. • Drafting writing in the sidebar, including replies, emails, comments, bug reports, job application responses, or longer messages. • Rewriting text to match a specific tone such as simpler, more formal, more direct, or more conversational. • Autofilling text fields, forms, and prompts with context-aware responses directly on the page. • Uploading screenshots, images, PDFs, or small files and asking questions about them while staying on the same webpage. • Using full-page context so answers stay aligned with the content you are reading. • Saving session history to return to previous questions or continue longer workflows. • Choosing from multiple LLM providers depending on your plan to balance speed, cost, quality, and reasoning depth. Lensel is especially useful for students, developers, designers, researchers, product managers, writers, and anyone who spends time reading or working with information online. If your daily routine involves learning, analyzing, or writing on the internet, Lensel becomes a natural part of that process. By installing Lensel, every tab becomes easier to work with. You can understand content faster, break down complex topics, turn confusing documentation into clear steps, write polished responses, or fill out inputs instantly without leaving the page. Everything stays in one place and in context. Lensel acts like an AI partner that works alongside you as you browse, helping you read, learn, write, and complete tasks with less friction.