Pluginofficial publisher

Liner

Plugin : A set of capabilities installed into an AI application or a host · requires chrome

Highlighting, summarization, and AI search with sources.

Good for academic research and monitoring, less so for other uses.

Overall score

6.6 /10

Security: one caveat, see the card

Utility

6.0

Reliability

6.0

Security

One caveat

Ease

1 click · Beginner

Security reflects where data goes, requested permissions and incidents on record at the verification date. It is not a guarantee of zero risk: check the deployment mode and the connections you enable.

What it does, concretely

Reading and analyzing large amounts of online content takes time: long articles, YouTube videos, PDFs, and presentations pile up without any easy way to retain the essentials. Liner addresses this by combining highlighting, automatic summarization, and AI-powered search with cited sources, directly in the browser.

In practice, the extension activates on any webpage, YouTube video, or PDF document. Users can highlight text on the fly, request a one-click page summary, or ask questions via the AI Copilot displayed in a side panel. Answers come with references to the sources used. PDF, PowerPoint, and Word files can also be analyzed and summarized.

Liner is primarily aimed at students, researchers, and professionals who regularly process large volumes of documents. A Scholar mode restricts answers to academic sources only, and an AI agent can generate literature reviews or evaluate manuscripts. Citation generation in APA, MLA, or Chicago format is also available.

However, Liner is less suited to those looking for a simple note-taking tool without a subscription: the free plan limits the number of highlights per article and the number of daily AI interactions. Users who do not need the research dimension may find the interface cluttered and secondary features of little use.

What it offers

·Text highlighting on webpages, YouTube videos, and images, with multiple colors and themes available.
·One-click automatic summary of webpages, PDFs, and YouTube videos, with key points.
·AI Copilot side panel for asking questions about the content of the current page.
·Scholar mode: search restricted to academic sources, ideal for academic work.
·Automatic citation generation in APA, MLA, or Chicago format.
·Analysis and summarization of uploaded PDF, PowerPoint, and Word files (paid).
·AI agents for literature reviews, hypothesis generation, and manuscript evaluation (paid).
·Organization of highlights into collections and export to tools such as Evernote.

Our tips

Pin the extension in the Chrome toolbar to access the Copilot in one click from any page, without opening settings.
Use the Auto Highlight feature to let the AI automatically highlight important passages in an article, then refine the selection manually.
If the Copilot panel interferes with your reading, you can disable it page by page or globally from the extension settings.
Enable Scholar mode before searching on an academic topic to get answers drawn only from reliable sources.
On YouTube, use the timestamps provided in the summary to jump directly to the most relevant parts of a video without watching it in full.

Watch out

The free plan limits the number of highlights per article and the number of daily AI interactions, which can quickly become restrictive for heavy use without a subscription.
The extension requests access to browser tabs and collects the content of visited pages as well as browsing data: worth considering if you handle sensitive documents.

In practice

Price: Freemium
Commercial use: Commercial use: yes
Available on: chrome, ios, android
Host: chrome
FR interface: No

Security and data

Rating: Security: one caveat, see the card
Your data: Data with the vendor
Maintenance: Active

Links and repository checked on 25 October 2026 · added on 1 January 2015

How to install Liner

1. Open the Chrome Web Store and search for "Liner: ChatGPT AI Copilot". 2. Click "Add to Chrome" and confirm the requested permissions (access to tabs and page content). 3. Once installed, pin the extension to the Chrome toolbar for quick access. 4. Create a free account at getliner.com or sign in with Google. 5. On any page, click the Liner icon to open the Copilot, or select text to highlight it. 6. Caution: the extension reads the content of pages you visit; avoid using it on pages containing personal or confidential information.

In the same category

Whole category Research & monitoring →