Liner

What Liner is

Liner is an AI research and search assistant that helps you find source-backed answers and keep what matters by highlighting web pages, PDFs, and YouTube videos as you read.

It is a research-assistant and search aid, not a hands-on generator. The appeal is that reading and saving meet in one flow, so a researcher keeps the exact passage instead of a bookmark, which suits someone who compares many sources.

The stance is less learning AI and more doing, and the product is aimed at students, researchers, and knowledge workers.

What you can do with it

You ask a question and Liner returns answers drawn from sources with citations, and you can highlight any passage on a page or in a PDF or video to save it into a personal library for later recall, so the loop is ask, highlight, revisit, aimed at students and analysts who live in research.

Because the answers carry citations, you can follow the source, and the highlight-and-save library is the part that builds a personal corpus as you read, which is the difference from a tool that only answers. For an analyst, that is the memory.

The video highlighting is the part that captures a moment you would otherwise re-watch to find.

Who it is for

It suits students, researchers, and knowledge workers comparing many sources.

It suits users who want a saved reading trail.

What to keep in mind

Pricing has a free tier with limited daily credits and a paid Pro plan near twenty dollars a month per public listings, but its old domain getliner.com now redirects to liner.com and the crawl could not confirm live amounts, so check the pricing page, and because a free tier exists confirm its limits. The compliance stance was not visible in the crawl, so review the policy.

A practical point: a saved library of highlights is a personal archive, so read the policy to see where it lives and how it syncs, because the corpus you build is a picture of what you study. The daily credit limit shapes how much you lean on the assistant, so confirm it before it becomes a habit. As with any AI answer, verify facts against the cited sources, since a citation can be partial, and confirm the live site, because the domain moved and the pricing is the part you must check, not assume, before you subscribe.

Two practical points

confirm the price on the live site and review the policy, because Liner is an AI research assistant with cited answers and a highlight-and-save library across web, PDF, and video, good for source-heavy work, but its old domain moved to liner.com and pricing could not be confirmed, so check live and verify cited facts.