Smallpdf vs Liner

Smallpdf8.8Visit Liner8.6Visit

Higher score Smallpdf #4 in AI Reading Assistant Apps 8.8/10 Free plan · 7-day trial Free planFree trial✓ 0 of 3 features Visit Smallpdf

vs

Liner #6 in AI Reading Assistant Apps 8.6/10 Free plan Free plan✓ 0 of 3 features Visit Liner

• Smallpdf fits best

  Readers wanting AI tools inside a full PDF toolkit

• Liner fits best

  Researchers who need cited answers and deep research

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Side by side

Feature	Smallpdf 8.8/10 Visit ↗	Liner 8.6/10 Visit ↗
At a glance
Editor score	8.8	8.6
Ranking	#4 in AI Reading Assistant Apps	#6 in AI Reading Assistant Apps
Best for	Readers wanting AI tools inside a full PDF toolkit	Researchers who need cited answers and deep research
Pricing model	Free plan + paid	Free plan + paid
Starting price	$7/seat/mo (best)	$14.99/user/mo
Free plan	✓	✓
Free trial	7 days	—
Deployment	Cloud, Desktop, Mobile, Browser extension	Cloud, Desktop, Mobile, Browser extension
Platforms	Web, Windows, iOS, Android, Chrome extension	Web, Windows, macOS, iOS, Android, Chrome extension
Support	Email, Tickets, Docs	Docs
Compliance	SOC 2, GDPR, ISO 27001	SOC 2, ISO 27001, HIPAA
Integrations	5 integrations	1,000+ integrations
Built for	Solo, Small business, Mid-market, Enterprise	Solo, Small business, Mid-market, Enterprise
Features Smallpdf 0/3 · Liner 0/3
PDF question answering	Not checked yet	Not checked yet
Article summaries	Not checked yet	Not checked yet
Reading annotations	Not checked yet	Not checked yet
Specs
Source import	Not checked yet	Not checked yet
AI queries per month	Not checked yet	Not checked yet
Our review
Pros	AI chat, summaries, translation, and question generation for PDFs Combines OCR, text editing, annotation, conversion, and page tools Available on web, Windows, iOS, Android, and as a Chrome extension	Source-backed answers with line-by-line citations Deep Research reports plus web and academic search Works across web, desktop, mobile, browser extension, and API
Cons	Free includes limited document downloads and mobile app access Unlimited AI tools require a paid Pro or Team plan The 7-day free trial requires a payment card	Free plan limits uploads to one file per day and 25MB per file Pro starts at $14.99 per user monthly with annual billing Team and Enterprise add-ons may be more than solo researchers need
Our verdict	Smallpdf brings AI reading features into a broader PDF toolkit for individuals, teams, and organizations. Its AI tools can chat about PDFs, summarize them, translate content, and generate questions. The same suite covers editing and… Read the review →	Liner is an AI search and research platform for academics, professionals, and teams who need answers grounded in sources. It combines web and academic search with source-backed responses, line-by-line citations, multi-step Deep Research… Read the review →

Strengths and trade-offs

• Smallpdf — where it wins

  • AI chat, summaries, translation, and question generation for PDFs
  • Combines OCR, text editing, annotation, conversion, and page tools
  • Available on web, Windows, iOS, Android, and as a Chrome extension

  Where it doesn't

  • Free includes limited document downloads and mobile app access
  • Unlimited AI tools require a paid Pro or Team plan
  • The 7-day free trial requires a payment card

• Liner — where it wins

  • Source-backed answers with line-by-line citations
  • Deep Research reports plus web and academic search
  • Works across web, desktop, mobile, browser extension, and API

  Where it doesn't

  • Free plan limits uploads to one file per day and 25MB per file
  • Pro starts at $14.99 per user monthly with annual billing
  • Team and Enterprise add-ons may be more than solo researchers need

• Smallpdf8.8/10 · Free plan · 7-day trial

  Smallpdf pairs AI document help with editing, conversion, OCR, and page-management tools.

  Visit SmallpdfFull verdict →
• Liner8.6/10 · Free plan

  A citation-focused research assistant with web, academic, and file search.

  Visit LinerFull verdict →