ChatPDF vs Knowt vs ReadDocs

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

Your tool
ChatPDF
vs
Competitor 1
Knowt
Competitor 2
ReadDocs
Competitor 3
Suggested competitors for ChatPDF: Humata84% Smallpdf AI PDF83% APAI PDF Reader83% Collate83% PDF.ai82% LightPDF79% PDFConvo78% UPDF78%
Compare
3 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 Knowt
knowt.com
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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
—
2.3Mvisits/mo
744visits/mo
MoM change
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▲ 27.1%
▲ 141.6%
6-month growth
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-36.9%
—
Global rank web
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#29,000
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Avg. last 3 months
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2.1M
384
Bounce rate lower is better
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34%
39%
Pages / visit
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4.6
1.1
Visit duration
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5m 28s
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Traffic sources
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● Direct 93% · ● Referral 6%
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ChatPDFKnowtReadDocs
01.3M2.7M4M5.3MKnowt · 3.5MKnowt · 3.4MKnowt · 2.9MKnowt · 3.4MKnowt · 3.6MKnowt · 4.6MKnowt · 5.3MKnowt · 2.3MKnowt · 1.8MKnowt · 2.3MReadDocs · 101ReadDocs · 308ReadDocs · 7441001K10K100K1M10MKnowt · 3.5MKnowt · 3.4MKnowt · 2.9MKnowt · 3.4MKnowt · 3.6MKnowt · 4.6MKnowt · 5.3MKnowt · 2.3MKnowt · 1.8MKnowt · 2.3MReadDocs · 101ReadDocs · 308ReadDocs · 744Nov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Free
Freemium
Freemium
Starting price
Free
$4per month · free tier available
Free tier
Free tier
Free trial
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–
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API access
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–
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Plans
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Free FreeUltra (School License) $4/yr
Free FreePro £9.99/moBusiness £29/mo
Capabilities input → output
Input
DocumentsTextWeb pages
AudioDocumentsTextWeb pages
DocumentsImagesText
Output
Text
AudioText
Text
Skill level
Beginner-friendly
Beginner-friendly
Beginner-friendly
Categories
Education & LearningProductivity & OfficeResearch & AnalyticsWriting & Content+4 more
Education & LearningProductivity & OfficeAI Flashcard MakerAI Note Taker+2 more
Productivity & OfficeWriting & ContentAI PDFAI Summarizer
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
12
5
13
Document summarization
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Interactive PDF processing
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PDF analysis
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PDF summaries
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Summarizing
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Summaries
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Document chat
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Document q a
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Document summaries
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Flashcards
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PDFs
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Note taking
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OCR
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Official documents q a
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PDF translations
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Quiz generation
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Research
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Academic research
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Document reading
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Education
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Homework assistance
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Meeting summaries
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Podcasts
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YouTube summaries
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 0
Saves
0
0
0
Reviews
0
0
0
Prompts
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.