Developer launches PrepOCR, a free batch image preprocessor to improve OCR accuracy

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A developer has released PrepOCR, a free image preprocessing tool designed to improve OCR accuracy by cleaning up images before they are fed into recognition pipelines. The tool supports tilt correction, contrast enhancement, and binarization with a configurable threshold, addressing common issues like skewed scans and noisy backgrounds. Users can upload multiple images, select preprocessing settings, and receive a ZIP file of optimized outputs. The backend is built with Scala and http4s, and uses parallel processing to handle batch conversions more efficiently. The creator describes it as an MVP built to meet a personal need and is actively seeking user feedback and feature requests.

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