ChatPDF vs ReadDocs vs NoteAI vs LightPDF

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

Your tool
ChatPDF
vs
Competitor 1
ReadDocs
Competitor 2
NoteAI
Competitor 3
LightPDF
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 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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Competitor NoteAI
noteai.io
A graduate student records three-hour lecture videos and needs searchable transcripts in multiple languages
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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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Traffic estimated monthly website traffic
Monthly visits
—
744visits/mo
309.1Kvisits/mo
1.8Mvisits/mo
MoM change
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▲ 141.6%
▼ 7.8%
▲ 1.0%
6-month growth
—
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+11.4%
-4.4%
Global rank web
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#167,266
#34,433
Avg. last 3 months
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384
315.5K
1.7M
Bounce rate lower is better
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39%
46%
51%
Pages / visit
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1.1
1.6
2.3
Visit duration
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21s
1m 31s
Traffic sources
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● Direct 81% · ● Referral 17%
● Direct 88% · ● Referral 10%
ChatPDFReadDocsNoteAILightPDF
0769.9K1.5M2.3M3.1MReadDocs · 101ReadDocs · 308ReadDocs · 744NoteAI · 64.5KNoteAI · 80.7KNoteAI · 57.4KNoteAI · 277.5KNoteAI · 3.1MNoteAI · 1.3MNoteAI · 302.1KNoteAI · 335.3KNoteAI · 309.1KLightPDF · 1.6MLightPDF · 1.6MLightPDF · 1.9MLightPDF · 1.7MLightPDF · 1.9MLightPDF · 1.9MLightPDF · 1.8MLightPDF · 1.5MLightPDF · 1.8MLightPDF · 1.8M1001K10K100K1M10MReadDocs · 101ReadDocs · 308ReadDocs · 744NoteAI · 64.5KNoteAI · 80.7KNoteAI · 57.4KNoteAI · 277.5KNoteAI · 3.1MNoteAI · 1.3MNoteAI · 302.1KNoteAI · 335.3KNoteAI · 309.1KLightPDF · 1.6MLightPDF · 1.6MLightPDF · 1.9MLightPDF · 1.7MLightPDF · 1.9MLightPDF · 1.9MLightPDF · 1.8MLightPDF · 1.5MLightPDF · 1.8MLightPDF · 1.8MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Free
Freemium
Freemium
Freemium
Starting price
Free
Free tier
$4.99per month · free tier available
$1.33per month · free tier available
Free tier
Free trial
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API access
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Plans
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Free FreePro £9.99/moBusiness £29/mo
Free FreePro $4.99/moUnlimited $8.33/mo
Free FreeMonthly $5.99/moYearly $15.99/yrLifetime $39.99
Capabilities input → output
Input
Web pagesTextDocuments
TextImagesDocuments
AudioDocumentsImagesWeb pagesVideo
DocumentsWeb pages
Output
Text
Text
DocumentsImagesText
Text
Skill level
Beginner-friendly
Beginner-friendly
Beginner-friendly
Beginner-friendly
Categories
Education & LearningProductivity & OfficeResearch & AnalyticsWriting & Content+4 more
Productivity & OfficeWriting & ContentAI PDFAI Summarizer
Productivity & OfficeVideo EditingVoice & SpeechWriting & Content+5 more
Productivity & OfficeWriting & ContentAI Document ExtractionAI PDF+1 more
Tasks what each tool can do · 2 shared · core   partial
Tasks covered
7
10
7
9
Summarizing
Document summarization
PDF analysis
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PDFs
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OCR
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Summaries
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Data extraction
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Document data extraction
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Document summaries
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PDF summaries
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Transcription
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Video summaries
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Homework assistance
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Interactive PDF processing
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Mind maps
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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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Note taking
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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.