ChatPDF vs LightPDF vs Smallpdf AI PDF vs ReadDocs

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
Smallpdf AI PDF
Competitor 3
ReadDocs
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 Smallpdf AI PDF
smallpdf.com
Smallpdf AI PDF, also called Chat with PDF, lets you upload a document and talk to it.
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Competitor ReadDocs
readdocs.co.uk
Upload a PDF contract and ReadDocs spits out a one-minute summary, bullet points, and answers to specific questions you ask
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Traffic estimated monthly website traffic
Monthly visits
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1.8Mvisits/mo
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744visits/mo
MoM change
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▲ 1.0%
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▲ 141.6%
6-month growth
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-4.4%
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Global rank web
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#34,433
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Avg. last 3 months
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1.7M
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384
Bounce rate lower is better
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51%
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39%
Pages / visit
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2.3
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1.1
Visit duration
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1m 31s
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Traffic sources
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● Direct 88% · ● Referral 10%
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ChatPDFLightPDFSmallpdf AI PDFReadDocs
0477.3K954.5K1.4M1.9MLightPDF · 1.6MLightPDF · 1.6MLightPDF · 1.9MLightPDF · 1.7MLightPDF · 1.9MLightPDF · 1.9MLightPDF · 1.8MLightPDF · 1.5MLightPDF · 1.8MLightPDF · 1.8MReadDocs · 101ReadDocs · 308ReadDocs · 7441001K10K100K1M10MLightPDF · 1.6MLightPDF · 1.6MLightPDF · 1.9MLightPDF · 1.7MLightPDF · 1.9MLightPDF · 1.9MLightPDF · 1.8MLightPDF · 1.5MLightPDF · 1.8MLightPDF · 1.8MReadDocs · 101ReadDocs · 308ReadDocs · 744Nov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Free
Freemium
Freemium
Freemium
Starting price
Free
$1.33per month · free tier available
€6per month · free tier available
Free tier
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
Pro €7.50/moTeam (2-100 users) €6/mo
Free FreePro £9.99/moBusiness £29/mo
Capabilities input → output
Input
DocumentsTextWeb pages
DocumentsWeb pages
DocumentsText
DocumentsImagesText
Output
Text
Text
Text
Text
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 Document ExtractionAI PDF+1 more
Productivity & OfficeWriting & ContentAI PDFAI Summarizer
Tasks what each tool can do · 2 shared · core   partial
Tasks covered
7
9
7
10
Document summarization
Summarizing
PDFs
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PDF analysis
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PDF summaries
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Document data extraction
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Interactive PDF processing
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OCR
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Summaries
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Data extraction
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Document chat
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Document summaries
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Homework assistance
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Official documents q a
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Research
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Text extraction
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Academic research
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Document processing
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Meeting summaries
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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
0
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.