Liner
AI copilot sidebar that summarizes YouTube, PDFs, and web pages.
At a glance
Price not confirmed · Source review 2026-11-04- Price & billing
No plan amounts appear in the Web Store page text read, so no charge fact is recorded. The listing shows 300,000 users and a 3.6 rating from 6,000 ratings, with the publisher noted as having a good record with no history of violations.
- Free allowance
Not separately confirmed. Check the current plan before relying on a free allowance.
- Best suited to
Readers facing long articles, papers, and videos who want key points, timestamps, and follow-ups without switching tabs.; Researchers and students who want PDF summaries, chat with PDFs, and highlighted insights saved and revisited anytime.; Searchers who want AI answers with checkable sources next to Google and Bing results, using ChatGPT, Claude, and more in one place.
Fit is editorial guidance, not a measured result.- Platforms
Access: not separately verified. Operating systems not separately verified.
Published-source facts and editorial guidance. No product test is implied. Confirm current conditions before purchase.
No product screenshot is claimed for this listing. Use the official website ↗ to inspect the current interface.
What to know before choosing
Good fit
Readers facing long articles, papers, and videos who want key points, timestamps, and follow-ups without switching tabs.; Researchers and students who want PDF summaries, chat with PDFs, and highlighted insights saved and revisited anytime.; Searchers who want AI answers with checkable sources next to Google and Bing results, using ChatGPT, Claude, and more in one place.
Limits and trade-offs
Users not on Chrome, since this listing is a Chrome Web Store extension installed via Add to Chrome.; Users who want summaries without installing a browser extension at all.; Readers whose material sits entirely in apps outside YouTube, PDFs, and web pages, the stated summarizer inputs.
Plans and free allowances
No plan amounts appear in the Web Store page text read, so no charge fact is recorded. The listing shows 300,000 users and a 3.6 rating from 6,000 ratings, with the publisher noted as having a good record with no history of violations.
Evidence
Official Chrome Web Store listing ↗ (reviewed 2026-11-04)
Official published documentation reviewed; not a product test
Dates: Last reviewed 2026-11-04. Last reviewed is the latest source or editorial review date; it is not a content-change date.
A closer look at Liner
Liner is an AI copilot sidebar for reading: summarize YouTube videos with key points and timestamps, summarize PDFs and web pages, chat with PDFs, ask follow-up questions with ChatGPT, Claude, and other top models, get answers with sources next to Google and Bing results, and highlight and organize insights, all without switching tabs.
Editorial guidance based on published documentation. The workflow below is a suggested starting point, not a measured product result.
When to choose Liner
- Readers facing long articles, papers, and videos who want key points, timestamps, and follow-ups without switching tabs.
- Researchers and students who want PDF summaries, chat with PDFs, and highlighted insights saved and revisited anytime.
- Searchers who want AI answers with checkable sources next to Google and Bing results, using ChatGPT, Claude, and more in one place.
When to choose something else
- Users not on Chrome, since this listing is a Chrome Web Store extension installed via Add to Chrome.
- Users who want summaries without installing a browser extension at all.
- Readers whose material sits entirely in apps outside YouTube, PDFs, and web pages, the stated summarizer inputs.
A practical starting workflow
- Add Liner to Chrome from the Web Store listing and open the AI sidebar next to what is being read.
- Summarize a YouTube video, PDF, or web page, or chat with the document and ask follow-up questions.
- Highlight what matters, organize insights, and revisit saved learning anytime from the sidebar.
Check before committing
- The directory URL is the Chrome Web Store listing itself, so the listing is cited as the official page for this entry, not a separate vendor homepage.
- Ratings are updated daily per the listing and may not reflect the most recent reviews.
Common questions
I already have ChatGPT. Why do I need Liner?
Liner reads the page, PDF, or video being viewed, so users can ask about it instantly, use multiple models in one place, get answers with sources, and save insights, without copy-paste.
Why choose Liner?
Reading long articles, papers, and videos takes time, and Liner brings ChatGPT, Claude, and other top models next to whatever is being read.
Who is Liner for?
Readers, researchers, and students who summarize YouTube, PDFs, and web pages, chat with AI while searching, and highlight what matters in one sidebar.
Compare approaches for this task
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- Aktok — Small and mid-size businesses that want one platform for workspace, CRM, chatbot, scheduling and sales, instead of switching between apps.; Teams drowning in routine operations, since Aktok presents automation from invoicing to inventory management.
Sources and checks
Last source review is not a date of product testing. No rating or test result is implied by inclusion. Check the current plan and terms before buying.