ChatPDF vs LightPDF vs Collate vs PDF.ai

Which one fits you in 2026? Traffic, pricing, input → output, tasks and community side by side.

Your tool
ChatPDF
vs
Competitor 1
LightPDF
Competitor 2
Collate
Competitor 3
PDF.ai
Compare
4 tools · best value per row highlighted
Your tool ChatPDF
chatpdf.com
ChatPDF is a document question-answering app: upload a PDF, ask questions in plain language, and get answers with built-in citations that point back to the source passage.
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Competitor LightPDF
lightpdf.com
LightPDF AI for Docs is an online tool that utilizes artificial intelligence to summarize and extract insights from uploaded PDF, Word, Excel, and PPT documents. With multi-platform availability and s
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Competitor Collate
collate.one
Collate is a free, offline PDF assistant designed for everyday learners, students, and professionals who want to take control of their PDFs. With Collate, you can: • Summarize PDFs: Turn lengthy doc
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Competitor PDF.ai
pdf.ai
PDF.ai lets you chat with any PDF: ask questions, get summaries and find answers inside the document.
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Traffic estimated monthly website traffic
Monthly visits
—
1.8Mvisits/mo
4.1Kvisits/mo
—
MoM change
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▲ 1.0%
▼ 59.8%
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6-month growth
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-4.4%
-0.1%
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Global rank web
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#34,433
#4,822,608
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Avg. last 3 months
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1.7M
8.9K
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Bounce rate lower is better
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51%
37%
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Pages / visit
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2.3
1.3
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Visit duration
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1m 31s
2s
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Traffic sources
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● Direct 88% · ● Referral 10%
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ChatPDFLightPDFCollatePDF.ai
0477.3K954.5K1.4M1.9MLightPDF · 1.6MLightPDF · 1.6MLightPDF · 1.9MLightPDF · 1.7MLightPDF · 1.9MLightPDF · 1.9MLightPDF · 1.8MLightPDF · 1.5MLightPDF · 1.8MLightPDF · 1.8MCollate · 10.2KCollate · 7.2KCollate · 5.3KCollate · 4.1KCollate · 6KCollate · 13.1KCollate · 12.4KCollate · 10.2KCollate · 4.1K1K10K100K1M10MLightPDF · 1.6MLightPDF · 1.6MLightPDF · 1.9MLightPDF · 1.7MLightPDF · 1.9MLightPDF · 1.9MLightPDF · 1.8MLightPDF · 1.5MLightPDF · 1.8MLightPDF · 1.8MCollate · 10.2KCollate · 7.2KCollate · 5.3KCollate · 4.1KCollate · 6KCollate · 13.1KCollate · 12.4KCollate · 10.2KCollate · 4.1KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Free
Freemium
Freemium
Freemium
Starting price
Free
$1.33per month · free tier available
$9.99per month · free tier available
$49per month · free tier available
Free tier
Free trial
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API access
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Plans
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Free FreeMonthly $5.99/moYearly $15.99/yrLifetime $39.99
Free Custom
Free FreeStarter $49/moPro $99/moScale $249/mo+1 more
Capabilities input → output
Input
DocumentsTextWeb pages
DocumentsWeb pages
Documents
DocumentsText
Output
Text
Text
Text
DataText
Skill level
Beginner-friendly
Beginner-friendly
Beginner-friendly
Beginner-friendly
Categories
Education & LearningProductivity & OfficeResearch & AnalyticsWriting & Content+4 more
Productivity & OfficeWriting & ContentAI Document ExtractionAI PDF+1 more
Productivity & OfficeWriting & ContentAI PDFAI Summarizer
Productivity & OfficeWriting & ContentAI Document ExtractionAI PDF+1 more
Tasks what each tool can do · 3 shared · core   partial
Tasks covered
12
9
10
10
PDF analysis
PDFs
Summarizing
Interactive PDF processing
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PDF summaries
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Document summarization
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Document data extraction
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Data extraction
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OCR
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Document processing
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Document reading
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Summaries
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APIs
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Document chat
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Local AI
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PDF translations
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Research
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Text extraction
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Academic research
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Homework assistance
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 0
▲ 0
Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
0
0
0
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Verified listing
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Traffic figures are third-party estimates for the tool's own domain; tools sharing a domain with a bigger product are not counted. Pricing is captured from each tool's site and may lag.