LightPDF vs ChatDOC

LightPDF9.2Visit ChatDOC8.8Visit

Higher score LightPDF #2 in AI PDF Tools 9.2/10 Free plan · 3-day trial Free planFree trial✓ 0 of 4 features Visit LightPDF

vs

ChatDOC #5 in AI PDF Tools 8.8/10 Free plan Free plan✓ 0 of 4 features Visit ChatDOC

• LightPDF fits best

  Affordable PDF tools across web, desktop, and mobile

• ChatDOC fits best

  Multi-document research with citations

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Side by side

Feature	LightPDF 9.2/10 Visit ↗	ChatDOC 8.8/10 Visit ↗
At a glance
Editor score	9.2	8.8
Ranking	#2 in AI PDF Tools	#5 in AI PDF Tools
Best for	Affordable PDF tools across web, desktop, and mobile	Multi-document research with citations
Pricing model	Free plan + paid	Free plan + paid
Starting price	$15.99/yr	$89.90/yr
Free plan	✓	✓
Free trial	3 days	—
Deployment	Cloud, Desktop, Mobile, Browser extension	Cloud, Browser extension
Platforms	Web, Windows, macOS, iOS, Android, Chrome extension	Web, Chrome extension
Support	Live chat, Tickets, Docs	Email, Community, Docs
Built for	Solo, Small business, Mid-market, Enterprise	Solo, Small business, Mid-market
Features LightPDF 0/4 · ChatDOC 0/4
Multi-file chat	Not checked yet	Not checked yet
Source citations	Not checked yet	Not checked yet
AI for scanned PDFs	Not checked yet	Not checked yet
API access	Not checked yet	Not checked yet
Specs
Upload limit	Not checked yet	Not checked yet
Maximum file size	Not checked yet	Not checked yet
Export formats	Not checked yet	Not checked yet
Our review
Pros	Covers editing, conversion, OCR, signing, protection, and AI assistance Paid plans include unlimited file size and cloud storage Available on web, Windows, macOS, iOS, Android, Chrome, and API	Cites answers with page numbers and linked references Analyzes tables, formulas, scanned pages, and document text Supports multi-document chat, URL imports, web, API, and Chrome extension
Cons	The Free Plan is web-only with a 10MB file-size limit AI credits are limited by plan, including 40,000 for lifetime access The product may offer more features than users needing only basic PDF tasks	Free plan limits uploads and questions Pro plans allow 300 files every 30 days OCR for scanned pages is available on Pro
Our verdict	LightPDF is a PDF software service for individuals and organizations that need more than one document task in a single toolkit. It supports merging, splitting, compression, conversion to Word, PowerPoint, Excel, images, and other formats,… Read the review →	ChatDOC is a web-based AI assistant for asking questions about PDFs and other documents. It suits researchers, analysts, students, and teams that need to summarize files, extract information, inspect tables and formulas, or compare content… Read the review →

Strengths and trade-offs

• LightPDF — where it wins

  • Covers editing, conversion, OCR, signing, protection, and AI assistance
  • Paid plans include unlimited file size and cloud storage
  • Available on web, Windows, macOS, iOS, Android, Chrome, and API

  Where it doesn't

  • The Free Plan is web-only with a 10MB file-size limit
  • AI credits are limited by plan, including 40,000 for lifetime access
  • The product may offer more features than users needing only basic PDF tasks

• ChatDOC — where it wins

  • Cites answers with page numbers and linked references
  • Analyzes tables, formulas, scanned pages, and document text
  • Supports multi-document chat, URL imports, web, API, and Chrome extension

  Where it doesn't

  • Free plan limits uploads and questions
  • Pro plans allow 300 files every 30 days
  • OCR for scanned pages is available on Pro

• LightPDF9.2/10 · Free plan · 3-day trial

  A broad, affordable PDF toolkit with free access and flexible paid plans.

  Visit LightPDFFull verdict →
• ChatDOC8.8/10 · Free plan

  A capable research assistant for asking cited questions across PDFs and documents.

  Visit ChatDOCFull verdict →