Liner
Liner is an AI-powered research assistant that helps users highlight, save, and summarize web content and PDFs, with an integrated AI chatbot for asking questions about saved material.
Try Liner →
✓ Free plan available
🏷️ Claim this listing
Are you the owner or representative of Liner? Claim your listing to get a Verified badge.
⚡ At a glance
Best for: Students, researchers, and knowledge workers who need to highlight and summarize web content and PDFs
✓ Clean, intuitive browser extension that is easy to install and use immediately
✗ Free plan AI query limits are very restrictive (only a handful of AI questions per day), forcing upgrades quickly for regular use
An honest editorial snapshot from this tool's profile — not a paid placement.
Liner combines a web highlighter and AI search assistant into one tool, letting users annotate articles, PDFs, and YouTube videos while also querying an AI (powered by GPT-4) for research help. It positions itself as a 'second brain' for researchers and students. The free plan is functional but heavily limited by daily AI query caps, making it more of a taste-test than a full experience.
Best for: Students, researchers, and knowledge workers who need to highlight and summarize web content and PDFs
Key Features
- Web page and PDF highlighting with annotation
- AI chatbot (GPT-4 based) for querying saved content
- YouTube video summarization
- AI-powered web search with cited sources
- Chrome and mobile browser extension
- Organized highlight collections and folders
How to use Liner
▶️ Video review by YouTube Tutorial (Third-Party)✓ Verified Reviewer
Pros
- Clean, intuitive browser extension that is easy to install and use immediately
- AI answers include cited sources, reducing hallucination risk for research tasks
- Supports highlighting across web pages, PDFs, and YouTube in one unified tool
Cons
- Free plan AI query limits are very restrictive (only a handful of AI questions per day), forcing upgrades quickly for regular use
- Pro plan at ~$20/mo is expensive relative to competitors like Perplexity or NotebookLM which offer more for less
- Pricing page lacks full transparency on exact monthly usage limits per tier — users often discover caps only after hitting them
- No collaboration or team sharing features; purely a single-user tool
- AI search quality is not clearly differentiated from simply using Perplexity or ChatGPT directly, making the value proposition thin for power users
Pricing Details
| Pricing type | Freemium |
| Starting at | Free |
| Free plan | ✅ Available |
Liner Pricing
Liner pricing — 5 plans: Free ($0/mo) · Pro ($14.99/month (billed annually; $17.99/mo billed monthly)) · Max ($29.99/month (billed annually; $35.99/mo billed monthly)) · Team ($26.99/month per seat (2-20 members)) · Enterprise (Custom pricing — contact Liner). Compare monthly and yearly costs below.
Free
$0/mo
$0/mo
- ✓ 100 Agent credits/month
- ✓ Unlimited Advanced Search
- ✓ Access to Image Generation and Deep Research
- ✓ 1 file upload/day (up to 25MB/file)
- ✓ Answers include ads
Pro
$14.99/month (billed annually; $17.99/mo billed monthly)
$14.99/month (billed annually; $17.99/mo billed monthly)
- ✓ 1,000 Agent credits/month
- ✓ Applies across Liner, Liner Scholar & Liner Write
- ✓ Unlimited Advanced Search, Image Generation & Deep Research
- ✓ 20 file uploads/day (up to 100MB/file)
- ✓ Use of major AI models (ChatGPT, Gemini, Claude)
- ✓ Ad-free search experience
Max
$29.99/month (billed annually; $35.99/mo billed monthly)
$29.99/month (billed annually; $35.99/mo billed monthly)
- ✓ 2,500 Agent credits/month
- ✓ Applies across Liner, Liner Scholar & Liner Write
- ✓ Unlimited file uploads/day (up to 200MB/file)
- ✓ Use of major AI models (ChatGPT, Gemini, Claude)
- ✓ Ad-free search experience
Team
$26.99/month per seat (2-20 members)
$26.99/month per seat (2-20 members)
- ✓ Everything in Max, plus:
- ✓ Master account for centralized management & billing
- ✓ Secure, dedicated workspace with admin controls
- ✓ Team data excluded from AI training
- ✓ Early access to collaboration features
- ✓ Save 25% vs individual Max plans
Enterprise
Custom pricing — contact Liner
Custom pricing — contact Liner
- ✓ Everything in Team, plus:
- ✓ Dedicated success manager & onboarding sessions
- ✓ Audit logs for secure usage
- ✓ Higher discount rates
- ✓ Built for large organizations needing flexibility & governance
See Current Pricing →
Pricing may change — always verify on the official site.
- Collecting and annotating research articles for academic papers
- Summarizing long PDFs or web pages quickly during desk research
- Asking follow-up questions about saved highlights without switching tabs
Be the first to review Liner
Share your honest experience and help others make better decisions. Your review will be verified and published for free.
Write a Review
Your email will be verified before publishing. No fake reviews, ever. By submitting you agree to our Review Guidelines.
Alternatives to Liner
See how Liner compares side-by-side with similar tools
Liner Current |
Readwise Reader
|
Semantic Scholar
|
ResearchRabbit
| |
|---|---|---|---|---|
| Rating | ★★★½☆ 3.3 | ★★★½☆ 3.7 | ★★★½☆ 3.7 | ★★★½☆ 3.5 |
| Trust Score | 58/100 | 70/100 | 76/100 | 68/100 |
| Pricing |
Free
$0/mo
Pro
$14.99/mo
Max
$29.99/mo
Team
$26.99/mo |
Free Trial
$0 for 30 days
Readwise Lite
$5.59/mo
Readwise (Full, includes Reader)
$9.99/mo |
Free (Nonprofit, fully free)
$0 - completely fre… |
Free
$0 forever
ResearchRabbit+
$10/mo
Institution
Custom |
| Data updated | 29 days ago | 29 days ago | 29 days ago | 29 days ago |
| Try → | Compare → | Compare → | Compare → |
About Trust Score
Trust Score (0–100) is the average of five quality criteria — Value for money, Free plan, Ease of use, Features, and Transparency — scored on a strict scale. Popularity, brand size, and affiliate commissions never affect it. Tools marked "Editorial estimate" are not yet hands-on tested. How Trust Score works →
🛡️ We don't sell rankings. Reviews are real user opinions, verified by email. Trust Scores are calculated independently from any paid placement. How we keep reviews honest →
Affiliate disclosure: Some links on this page are affiliate links. We may earn a small commission if you sign up — at no extra cost to you.
