PDFs
Guides to working with PDFs and AI - summarising long PDFs and extracting usable text from scanned ones.
11 guides
What Is OCR? Why Your Scanned PDFs Read as Blank (and How to Fix It)
OCR in plain English: how to tell a scanned PDF from a born-digital one, free ways to add real text, and why OCR decides whether AI can cite your document.
Read the guideWhy Can't ChatGPT Read My PDF? 4 Causes and Fixes (2026)
ChatGPT can't read your PDF? The real causes - scanned pages, size limits, blocked links - and how to fix each, plus a cited alternative that just reads it.
Read the guideNotebookLM Can't Read Your Scanned PDF? Here's the Fix (2026)
NotebookLM imports your scanned PDF as blank because it has no text layer. Here's why - and how to OCR it or read it in the browser with citations instead.
Read the guideIs Adobe Acrobat AI Assistant Worth It? An Honest Review
An honest review of Adobe Acrobat AI Assistant - what the paid add-on does well, where it falls short, and when a browser reader with citations beats it.
Read the guideHow to Compare Two PDFs With AI (and Spot What Changed)
How to compare two PDFs with AI - group both versions, ask what changed, and get a cited answer pointing to the exact clause that differs between them.
Read the guideHow to Chat With Multiple PDFs at Once
How to chat with multiple PDFs at once - group them into one collection and ask across all of them, with every answer citing the source document it came from.
Read the guideCopilot Can't Read Scanned PDFs in SharePoint? 2 Fixes (2026)
Microsoft 365 Copilot can't read a scanned PDF without a text layer. Why it happens in SharePoint, how to make files readable, and an OCR reader that cites.
Read the guideCan AI Read Handwriting and Scanned Notes in PDFs? (2026)
Can AI read handwriting and scanned notes in a PDF? What OCR handles well, where handwriting gets hard, and how to turn image PDFs into cited answers.
Read the guideThe Best AI PDF Annotation Tools (and What They Do)
A guide to AI PDF annotation tools - AI-assisted markup versus reading layers that highlight and explain passages, and which one fits how you actually read.
Read the guideHow to Summarise a Long PDF Without Losing Accuracy
Long PDFs break naive AI summaries. Here's how to summarize a long PDF in sections, handle scanned pages, and keep every claim traceable to the source.
Read the guideHow to Extract Text From a Scanned PDF (OCR) - and Use It
A practical guide to extracting text from a scanned PDF with OCR - the free tools, Adobe, accuracy gotchas, and how to actually read and question the result.
Read the guideStop digging. Start asking.
Add Sidenote to your browser, open any page in your wiki, and ask it the question you’ve been Slacking the team about.
7-day Pro trial · No card required · Free plan forever