OCR4all
ocr4all.org
Spec sheet
- Purpose
- OCR4all provides a workflow for recognizing historical printed and handwritten material, with user interaction at workflow stages to improve results.Read 11 Oct 2026 · ocr4all.org
- Intended users
- The product explicitly addresses non-technical users and is described as suitable for people without a computer science background.Read 11 Oct 2026 · ocr4all.org
- Deployment
- OCR4all runs in Docker and is accessed through a browser at a local address in the Quickstart instructions.Read 11 Oct 2026 · ocr4all.org
- Free plan
- YesRead 23 Sep 2026 · ocr4all.org
- Support
- The team page identifies a user support contact, Florian Langhanki, with a University of Würzburg email address.Read 11 Oct 2026 · ocr4all.org
- License
- OCR4all is released under the MIT License.Read 11 Oct 2026 · ocr4all.org
- Headquarters
- Würzburg, GermanyRead 28 Sep 2026 · ocr4all.org
- Founded
- 2019Read 19 Oct 2026 · ocr4all.org
- Annotation
- The included LAREX editor lets users manually annotate, correct, or compare layout and text elements.Read 11 Oct 2026 · ocr4all.org
- Data handling
- The Quickstart mounts local data and model folders into the Docker container.Read 11 Oct 2026 · ocr4all.org
- Notable limit
- The user guide says recommended image preprocessing occurs outside OCR4all.Read 11 Oct 2026 · ocr4all.org
- OCR-D compatibility
- The site says future versions are built to be fully compatible with the OCR-D ecosystem and describes interfaces for OCR-D tools.Read 11 Oct 2026 · ocr4all.org
- Primary platform
- bothRead 23 Sep 2026 · ocr4all.org
- Recognition engine
- The product page describes text recognition as being carried out with Calamari.Read 11 Oct 2026 · ocr4all.org
- Supported inputs
- bothRead 23 Sep 2026 · ocr4all.org
- Supported operating systems
- The setup guide provides installation instructions for Linux, macOS, and Windows.Read 11 Oct 2026 · ocr4all.org
- Workflow
- Its workflow includes image preprocessing, layout and line segmentation, text recognition, correction, and training work-specific recognition models.Read 11 Oct 2026 · ocr4all.org
Plans and prices
OCR4all Free Completely free and open-source; no subscriptions or paywalled features. No subscription or paywalled features stated · MIT License Read 11 Oct 2026 · ocr4all.org
Where Specifiction places it
- OCR software#22 of 408.0
- OCR tools#8 of 138.1
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