Repositories list

• core

  Public
  Collection of OCR-related python tools and wrappers from @OCR-D

  ocr-d

  Python

  •

  Apache License 2.0

  •33•132•115•19•Updated Dec 22, 2025Dec 22, 2025

• OCR-D-GT-VD-SBB

  Public
  A ground truth (GT) dataset created within the OCR-D project and consisting of 348 pages extracted from historical documents pertaining to the "Verzeichnis der im deutschen Sprachraum erschienenen Drucke" (VD), all of which have been digitised by Staatsbibliothek zu Berlin – Berlin State Library (SBB).

  Shell

  •

  Creative Commons Attribution Share Alike 4.0 International

  •0•0•0•0•Updated Nov 26, 2025Nov 26, 2025

• ocrd_segment

  Public
  OCR-D-compliant page segmentation

  ocr-d

  Python

  •

  MIT License

  •16•68•11•1•Updated Nov 19, 2025Nov 19, 2025

• keyboardGT

  Public
  Offer of different keyboards for transcription software (Aletheia, Transkribus, LAREX, QURATOR-neat, eScriptorium)

  ocrkeyboard-layouttranscription+ 6ground-truthaletheiatranskribusescriptoriumlarexqurator-neat

  XSLT

  •

  Creative Commons Attribution Share Alike 4.0 International

  •1•1•0•0•Updated Nov 5, 2025Nov 5, 2025

• ocrd_pagetopdf

  Public
  OCR-D wrapper for prima-pagetopdf

  ocrocr-dprima-pagetopdf

  Python

  •

  Apache License 2.0

  •7•9•3•0•Updated Oct 30, 2025Oct 30, 2025

• spec

  Public
  Specification of the @OCR-D technical architecture, interface definitions and data exchange format(s)

  ocr-d

  Python

  •5•17•42•6•Updated Sep 18, 2025Sep 18, 2025

• ocrd-website

  Public
  HTML

  •

  Creative Commons Attribution 4.0 International

  •7•24•16•1•Updated Sep 17, 2025Sep 17, 2025

• ocr-d.github.io

  Public
  Website for OCR-D specs, formats, requirements

  ocr-d

  HTML

  •2•5•0•0•Updated Sep 17, 2025Sep 17, 2025

• ocrd_keraslm

  Public
  Simple character-based language model using keras

  ocr-d

  Python

  •

  Apache License 2.0

  •6•7•1•0•Updated Aug 12, 2025Aug 12, 2025

• ocrd_kraken

  Public
  Wrapper for the kraken OCR engine

  ocr-d

  Python

  •

  Apache License 2.0

  •6•13•4•1•Updated Jul 12, 2025Jul 12, 2025

• ocrd_all

  Public
  Master repository which includes most other OCR-D repositories as submodules

  ocr-d

  Makefile

  •

  MIT License

  •19•72•23•4•Updated Jul 4, 2025Jul 4, 2025

• assets

  Public
  Test data for testing specs and software in @OCR-D

  ocr-d

  Makefile

  •9•5•20•7•Updated May 20, 2025May 20, 2025

• ocrd_fileformat

  Public
  OCR-D wrapper for ocr-fileformat

  ocr-d

  Python

  •

  Apache License 2.0

  •3•5•6•0•Updated May 20, 2025May 20, 2025

• ocrd_calamari

  Public
  Recognize text using Calamari OCR and the OCR-D framework

  ocrocr-dcalamari-ocr

  Python

  •

  GNU General Public License v3.0

  •6•15•18•1•Updated May 13, 2025May 13, 2025

• dinglehopper

  Public
  An OCR evaluation tool

  Python

  •

  Apache License 2.0

  •16•1•0•0•Updated May 7, 2025May 7, 2025

• ocrd_froc

  Public
  Python

  •

  Apache License 2.0

  •2•8•6•0•Updated May 6, 2025May 6, 2025

• ocrd_olahd_client

  Public
  ocr-d

  Python

  •

  Apache License 2.0

  •2•1•1•0•Updated May 6, 2025May 6, 2025

• page-to-alto

  Public
  Convert PAGE (v. 2019) to ALTO (v. 2.0 - 4.2)

  ocr-d

  Python

  •

  Apache License 2.0

  •5•14•9•0•Updated May 6, 2025May 6, 2025

• ocrd_anybaseocr

  Public
  DFKI Layout Detection for OCR-D

  ocrocr-docr-d-mp

  PureBasic

  •

  Apache License 2.0

  •11•47•19•1•Updated May 1, 2025May 1, 2025

• ocrd_olena

  Public
  Binarize with Olena/scribo

  ocr-d

  Python

  •

  GNU General Public License v2.0

  •8•7•2•0•Updated May 1, 2025May 1, 2025

• ocrd_tesserocr

  Public
  Run tesseract with the tesserocr bindings with @OCR-D's interfaces

  ocr-d

  Python

  •

  MIT License

  •11•39•12•5•Updated Apr 30, 2025Apr 30, 2025

• format-converters

  Public
  Converters for various file formats used for representing OCR

  ocr-d

  XSLT

  •

  Apache License 2.0

  •7•12•1•2•Updated Apr 30, 2025Apr 30, 2025

• gt_structure_text

  Public
  The OCR-D Ground Truth text and structure corpus was created between 2015 -2017. In the years since 2017, this corpus has been further curated and supplemented with metadata where appropriate. The corpus includes page XML files within annotations of the text and structure include.

  Creative Commons Attribution Share Alike 4.0 International

  •3•5•2•0•Updated Mar 25, 2025Mar 25, 2025

• quiver-frontend

  Public
  Vue

  •

  Apache License 2.0

  •1•0•21•3•Updated Oct 22, 2024Oct 22, 2024

• ocr-fileformat

  Public
  Validate and transform various OCR file formats (hOCR, ALTO, PAGE, FineReader)

  JavaScript

  •

  MIT License

  •24•1•0•0•Updated Oct 11, 2024Oct 11, 2024

• ocrd_im6convert

  Public
  Run ImageMagick with an OCR-D CLI

  ocr-d

  Shell

  •

  Apache License 2.0

  •3•5•2•0•Updated Oct 1, 2024Oct 1, 2024

• quiver-mongoapi-local

  Public
  Middleware for running Quiver locally

  Python

  •0•0•0•0•Updated Sep 24, 2024Sep 24, 2024

• quiver-benchmarks

  Public
  Benchmarking OCR-D workflows in Docker

  HTML

  •

  MIT License

  •1•2•8•2•Updated Sep 20, 2024Sep 20, 2024

• gt_structure_all

  Public
  Python

  •

  Creative Commons Zero v1.0 Universal

  •1•4•0•1•Updated Jun 24, 2024Jun 24, 2024

• gt_structure_5_3

  Public
  The repo gt_structure_5_3 is part of the OCR-D Ground Truth Structure corpus. Only the structure of the printed page is annotated. The corpus was created as a result of the DFG project OCR-D.

  Creative Commons Zero v1.0 Universal

  •1•0•0•1•Updated Jun 24, 2024Jun 24, 2024