Arkindex is the platform developed by Teklia for the automatic processing of large collections of scanned documents. Arkindex offers the following features:

  • Document management: import and organize images of document from files or IIIF manifests
  • Manual annotation: annotate images with zones, transcriptions and classifications
  • Automatic layout analysis: automatically detect documents components (texts, images, graphics, etc)
  • Automatic printed and handwritten text recognition: for printed (OCR) and handwritten (HTR) documents
  • Automatic named-entity extraction: identify persons, places, organizations, etc.

Arkindex is based on IIIF ( for images and is fully accessible through a REST API.

Try it :

Annotation Interface

The annotation interface allows you to:

  • define zones on the images with rectangles or polygones
  • define the type and class of the zones
  • add a manual transcription of the text in the zone

Example of image annotation using our interface

Document classification

  • Visual and text based classification
  • Custom class definition and training
  • Multilabel classification, confidence level

Documents are automatically classified using Machine Learning models

Automatic layout analysis

  • text line detection
  • document structure detection
  • graphical component detection



Automatic Text Recognition (HTR/OCR)

  • Printed text and handwritten text recognition
  • historical and modern handwriting
  • European, Arabic and Chinese languages supported

Le deux juin mil neuf cent, nous curé soussigné avons baptisé Joseph Adjutor, garçon né la veille du légitime marriage de Auguste Lemieuxjournalier, et de Louise Lavoie, de cette paroisse . Le parrain a été Joseph Harvey

रोजगारी : - यस समूह भित्रका उपभोक्ताहरुलाई रोजगारीका मृख्य अवसर निम्न अनुसारको छ । यस समूह भित्रका उपभोक्ताको आय श्रोत खेती हो । वार्षिक प्रति परिवार आय रु. २०००।- सम्म छ । महँगाईको कारण आय भन्दा

Processing steps

{{ carousel() }}

High quality software

We aim to produce high quality software at Teklia: you can view the details of our latest releases on this website.