Alternatives

Products that do what ThinkPDF does

20+ offline PDF tools & local AI chat in one app.

1. 1
   aiPDF - talk to books, docs and podcasts▲381

   ethical, powerful AI assistant for students and researchers

   2023

2. 2
   PDF.ai▲678

   Chat with any document

   2023 · pdf.ai

3. 3
   Chat with PDF▲201

   Chat with any PDF for free with no limitations or login

   2023

4. 4
   ChatPDF▲174

   Chat with any PDF using the new ChatGPT API

   2023

5. 5
   UPDF AI▲282

   Chat with Any PDF and Ask AI Anything, Summarize, Translate.

   2025

6. 6
   PDF to Chatbot▲356

   Talk to your documents

   2023

7. 7
   TalkingPdf.io▲129

   Talk to PDFs - ask, summarise & find info effortlessly

   2023

8. 8
   GoPDF▲159

   PDF solutions, powered by innovation

   2023

9. 9
   BrainyPDF▲211

   Summarize and answer questions for your PDFs using ChatGPT

   2023

10. 10JA
    Just another AI tool for chatting with docs, only better:)▲5

    aiPDF is your AI assistant that can scan, understand and "chat" with all your documents. It summarises massive docs in seconds and finds any information you want. It works with any file type, web articles and even with YouTube videos!

    2024 · aipdf.ai

11. 11
    Documind▲250

    ChatGPT for your documents

    2023

12. 12FP
    Filling PDF forms with AI using client-side tool calling▲60

    Hey HN! I built SimplePDF Copilot: an AI assistant that can interact with the PDF editor. It fills fields, answers questions, focuses on a specific field, adds fields, deletes pages, and so on. It's built on top of SimplePDF that I started 7 years ago, pioneering privacy-respecting client-side pdf editing, now used monthly by 200k+ people. As for the privacy model: the PDF itself never leaves the browser. Parsing, rendering, and field detection all run client-side. The text the model needs (and your messages) goes to whatever LLM you point at. By default that's our demo proxy (DeepSeek V4…

    May 2026 · copilot.simplepdf.com

13. 13
    Pdfchatai▲114

    Ask, answer, find items from your PDFs using AI

    2024

14. 14
    Smallpdf▲123

    We make PDF easy.

    2014

15. 15
    ChaturGPT▲161

    Let ChatGPT read all your PDFs and answer your queries

    2023

16. 16
    LocalPDF.io▲73

    Process your legal/medical/financial documents locally

    Mar 2026

17. 17
    OnePDF▲89

    An online PDF reader, converter & markup tool

    2023

18. 18
    myPDF: Offline Scanner & Edit▲1

    100% offline, no accounts, no subscription

    Feb 2026

19. 19
    SmartPDF AI▲2

    Chat with PDFs, generate quizzes & summarize docs in seconds

    Jun 2026 · smartpdfai.com

20. 20IG
    I got 50% of my traffic from ChatGPT instead of Google▲16

    Dec 2025 · localpdf.online

21. 21
    CloudAIRambo▲6

    Free, privacy-first tools for PDFs & AI tasks

    Jan 2026

22. 22
    HugPDF▲1

    Create Beautiful PDFs Using AI - Chat and Create PDFs

    Jan 2026

23. 23
    PDF❤AI▲2

    Chat with any PDF. 100% Private, 100% Local.

    Feb 2026

24. 24
    SnapNote▲5

    Launching our offline AI snipping tool.

    Jan 2026

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