I've been working on exactly this with FlowPDF (https://www.flowpdf.app/ https://www.flowpdf.app/). It was a huge pain to find a tool that didn't rely on Google

I've been working on exactly this with FlowPDF (https://www.flowpdf.app/ https://www.flowpdf.app/). It was a huge pain to find a tool that didn't rely on Google APIs. I integrated a local translation model. It downloads the model to your browser cache on the first run (so it's a bit heavy initially), but after that, you can OCR and translate documents 100% offline without uploading anything.