I built a new tool: https://tools.simonwillison.net/ocr - it runs OCR against images and PDFs entirely in your browser (no file upload needed) using Tesseract.js and PDF.js

I wrote more about the tool and how I built it (with copious amounts of Claude 3 Opus and a little bit of ChatGPT) here: https://simonwillison.net/2024/Mar/30/ocr-pdfs-images/