NotebookLM from Google is free and has a massive context window for very large documents. You can have it summarize or even ask questions about the document or set of documents. https://notebooklm.google/ Answer from carlosglz11 on reddit.com
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Reddit
reddit.com › r/productivityapps › affordable site that takes notes from pdfs using ai
r/ProductivityApps on Reddit: Affordable site that takes notes from PDFs using AI
April 22, 2025 -

So I have Tanna.ai now which is great, but a problem is that sometimes I need to take notes from PDFs that have a lot of pictures in them and want AI to fill in the blanks. I was able to do this with ChatGPT4o and it did a great job, but I have to split the PDFs into 10 - 15 page chunks which is inconvenient.

I'm wondering if there's any other apps out there at do this and will let me put in full PDFs. I'm willing to pay don't don't want to pay anymore than $10 USD a month. WIlling to do a yearly plan as well.

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Reddit
reddit.com › r/notetaking › ai tool to generate quick notes from pdfs. hope you'll find it helpful. (it's free, blenny.ai)
r/NoteTaking on Reddit: AI tool to generate quick notes from PDFs. Hope you'll find it helpful. (it's free, blenny.ai)
December 15, 2023 - 40K subscribers in the NoteTaking community. This subreddit is a useful guide to see how others take notes and how you can take notes effectively yourself. Posts here range from informational to to pictures of your note pages and handwriting. Posts with a "?" in the title will be automatically ...
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Reddit
reddit.com › r/pdf › [ removed by moderator ]
r/pdf on Reddit: [ Removed by moderator ]
April 7, 2025 - It's free. Supports veery long pdfs. And provides side by side view. ... Try UsePresentationPro.com to get a summary of research papers, business reports and presentations (slide decks). Get summary, key takeaways, list of action items, and strategic insights.
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Reddit
reddit.com › r/productivityapps › best ai tools for note-taking and summarizing content for youtube, pdfs, lectures etc.
r/ProductivityApps on Reddit: Best AI tools for note-taking and summarizing content for YouTube, PDFs, lectures etc.
July 2, 2025 -

I’ve tested quite a few tools recently for summarizing, organizing, and reviewing content, from class notes to podcasts. Here’s what stood out, starting with the one I’ve been using most:

  1. getrecall.ai: It handles YouTube, PDFs, Spotify/Apple Podcasts, and web pages. Summarizes into bite-sized cards, lets you chat with your notes, and builds a self-organizing knowledge base. Been super helpful for studying and content review.

  2. Mindgrasp: Good at summarizing lectures and answering questions from uploaded material. Feels geared toward students, especially for exams and dense PDFs.

  3. Obsidian: Not AI-first, but ideal for linking concepts and building a knowledge graph. Works great with community plugins.

  4. Evernote: Still decent for basic note organization and sync, but hasn’t really kept pace with newer AI-powered tools.

  5. Notion: Flexible for team or solo use. Notion AI helps with summaries and generation, though it’s more assistant-style than research deep dive.

  6. Eightify: If you want a quick hit of what a video’s about, it’s fast and reliable. But lacks deeper interaction with the content.

  7. NotebookLM: Google’s experimental tool lets you upload docs and chat with them. Promising for research-heavy tasks, but still in beta.

  8. NoteGPT: Handles both YouTube and PDFs with a nice UI. Helps with creating study notes fast, though less interactive than Recall.

Let me know what else is worth trying, especially anything that handles long-form stuff without breaking.

Top answer
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Nice comprehensive list, I've been down this rabbit hole myself recently. One thing I'd add is that the real magic happens when you can integrate these tools into your actual workflow rather than just having them as standalone apps. For example, I've been using Braini AI for processing video content and it's been solid for technical stuff since it can handle complex topics without getting confused like some of the simpler summarizers do. The key thing I learned from testing all these tools is that context retention matters way more than just basic summarization. Tools like getrecall and NotebookLM are good at this but you really need to feed them quality input to get quality output. Also worth mentioning that if you're dealing with technical content or need to maintain context across multiple sessions, make sure whatever tool you pick can actually remember previous conversations and build on them. Most of the quick summarizers like Eightify are great for surface level stuff but they fall apart when you need deeper analysis or want to connect concepts across different sources. The other thing nobody talks about is how these tools handle different accents and audio quality, which can make or break the experience if you're processing podcasts or lecture recordings regularly.
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Using recall recently. Great at everything, but somehow it doesn’t support summarising notes that are input manually. And the browser extension cannot pick up content behind paywall.
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Reddit
reddit.com › r/studytips › is there a free unlimited ai that can generate study notes from pdfs?
r/studytips on Reddit: Is there a free unlimited AI that can generate study notes from pdfs?
December 11, 2024 -

Pretty much the title, i have 30 pdfs of slides i want summarized study notes for and i cant find any ai website that will let me do more than 3 uploads.

Find elsewhere
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Reddit
reddit.com › r/research › is there an ai tool where you can upload pdfs of research articles and it synthesizes the information and common themes?
r/research on Reddit: Is there an AI tool where you can upload pdfs of research articles and it synthesizes the information and common themes?
January 23, 2025 - Turn any document (e.g. research paper) into a chatbot using GPT-4. Quickly query for info, summarise subtopics and translate complex jargon. It’s free to use - google “unriddle ai” to try and pls share your thoughts :)
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Reddit
reddit.com › r › NoteTaking › comments › 1ex11ht › the_best_ai_for_summarizing_pdfs
Reddit - The heart of the internet
January 17, 2024 - Posts here range from informational to to pictures of your note pages and handwriting. Posts with a "?" in the title will be automatically flaired as an unanswered question. If OP comments "Answered!" or "answered!" the post flair will changed to be answered. Please legacy DM one of the mods if you have a question ... I'm in search of an AI that can summarize the textbooks I'm trying to read after work.
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Reddit
reddit.com › r/writingwithai › new ai tool to read pdf for free!
r/WritingWithAI on Reddit: New AI tool to read PDF for free!
January 26, 2024 -

So heres the thing, I was surprised when I discovered it but if you put the link of the pdf on Infermatic.ai with the Mixtral model it can reads the pdf and gives you a summary and all the stuff you want.

I've used as inspiration to write my stories with what I already have, so I thought you may also wanna try it!

Update:

It resulted that this is not the strongest point of the website so the answers it gives about the pdf may be sometimes incorrect or incomplete, so what I've been doing is using other AI tool to get the information i want of the pdf and paste it on Infermatic to structure my papers and scripts.

On the comment section there were recommendations about other AI tools that I tried to I'm gonna leave them:

- The free version of Claude will let you attach all kinds of files to chat

- https://www.futuretools.io/ (You can search all kind of AI tools here)

- https://aipdf.ai/documents/0EsnnCDWZb9BGrA07iqB/uI3VyBygOWOaJhQlMPXm

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Reddit
reddit.com › r/pkms › looking for ai tools for summarizing, note-taking, and organizing information across platforms
r/PKMS on Reddit: Looking for AI Tools for Summarizing, Note-Taking, and Organizing Information Across Platforms
September 14, 2024 -

Hello hello!

I'm trying to go digital and organise my life by trying to find AI tools that can help me organize, summarize, and retain information across different types of media. I know there might not be a single tool that does everything, but I’d love suggestions on the best tools or combinations for my needs.

It seems there are so many new apps created in this space it's hard to know what can be trusted and has long-term lifespan. Any personal recommendations would be valued.

Here’s a breakdown of what I’m looking for:

  1. Summarizing YouTube Videos: I’d like a tool that offers detailed written summaries (beyond a short overview) for both YouTube videos and video podcasts.

  2. Summarizing Audio Podcasts: Similar to the above, with the ability to generate in-depth summaries of audio-only podcasts.

  3. Saving, Annotating, and Summarizing Web Pages: I do a lot of online reading and want a tool to save web pages for later, highlight sections, and then summarize them with AI. If it also supports active learning tools like quizzes or spaced repetition for my highlighted content, that would be ideal.

  4. Voice Note Transcription and Memory Bank Creation: I’d like to record voice notes (lectures, book chapters, ideas, etc.) and have them transcribed, then saved into an AI-assisted “second brain.” It would be helpful to ask questions like, “What notes do I have on topic ‘X’?” and receive a summary of points on that topic.

  5. Handwritten Note Conversion: Sometimes, writing out notes helps me retain information better. If possible, I’d like to use my Samsung S Pen or Apple Pencil for handwritten notes and have those notes converted to searchable text.

  6. Convert previous audio recordings of meetings into transcribed text and have AI analyse the notes.

  7. Journaling: I want to start journaling, so any tool with built-in features for journaling or tracking thoughts would be great.

  8. PDF and eBook Highlights: I also read PDFs and eBooks and often highlight key points. It would be great to save those highlights and have them integrated into my knowledge base.

Ideally, I’d like to link all this information in a searchable database, with AI helping me connect notes, summaries, and highlights. Cross-platform compatibility (Windows, Android, iPad/iOS) is important. I use my Samsung Android phone most heavily/frequently, but I also have a Windows laptop and iPad.

Any insights regarding privacy, especially for sensitive material (like personal journaling or work-related confidential notes)?

I know these features might require multiple tools, and I’m curious about cost-effective options (especially any lifetime subscription deals) since I’m worried about costs adding up with multiple paid services.

I’m also looking to avoid overly complex tools that are quick to use ( For example with the voice notes app it would be great to have a shortcut that can launch instant recording rather than multiple steps to start using it )

Not sure if this is relevant to the above but I also want to look at a personal management system such as to-do lists and Google calendar.

Thank you in advance everyone 🙏

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Reddit
reddit.com › r/pdf › best ai tool to summarize pdfs?
r/pdf on Reddit: Best AI tool to summarize PDFs?
July 1, 2025 -

I’ve got a pile of PDFs to go through—textbooks, reports, and research papers and I’m hoping to speed things up with a reliable AI summarizer.

Looking for something that:
– Handles large or complex files
– Provides precise, detailed summaries (not mere general overviews)
– Works with scanned/image-based PDFs too (bonus!)

Could you please share which AI tools have been effective for you? Free or paid, I’m down to try anything that saves time.

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Reddit
reddit.com › r/studytips › what are some ai tools that convert pdfs to practice questions for me?
r/studytips on Reddit: What are some AI tools that convert PDFs to practice questions for me?
February 29, 2024 -

Does anybody know of an AI study tool that takes practice questions (in the form of PDFs) and creates questions similar in nature to them?

Any other AI study tool recommendations would be greatly appreciated as well!

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Reddit
reddit.com › r/chatgpt › in search of an ai tool to organize and analyze content within pdf/word files for research purposes - suggestions?
In search of an AI tool to organize and analyze content within PDF/Word files for research purposes - suggestions? : r/ChatGPT
April 22, 2023 - Few days back I read an announcement post of a YC/23 applicant that may do what you want: thedrive.ai. ... You can Chat, generate TLDRs, Summarize and Organize Your PDFs, Web Articles and Youtube videos into your Personal Library. It's currently Free and Unlimited.