Free OCR (text recognition) tools that work entirely in your browser
Archipela OCR is a free collection of OCR tools that turn the text captured in images and PDFs into editable text. It runs the open-source OCR engine Tesseract, compiled to WebAssembly, inside your browser, so it can recognise text without uploading your images or PDFs to a server. No account and no installation required.
It handles Japanese (horizontal and vertical), English and mixed Japanese-English text, and includes tools built around the situations people actually run into: pasting a screenshot, transcribing a scanned PDF, and automatically pulling the invoice registration number, amount and date out of a receipt. Language data is loaded only on first use — that is a download to your device, and your images are never sent anywhere.
Secure by design
Images and PDFs are never sent to a server; everything is processed inside your browser
Vertical text supported
Vertically typeset Japanese documents can be transcribed as they are
Completely free
Free to use, with no limit on runs or number of files
Multi-device
Works on desktop, tablet and smartphone alike