Tesseract
Pure JavaScript OCR library.
- Free • Open Source
- Mac
- Windows
- Linux
Comments and Reviews
Said about Tesseract as an alternative
samsuffit GImageReader is a very good tool that use in fact the 'Tesseract' javascript library
GImageReader Tags
- text-recognition
List containing Tesseract
Adobe cloud FOSS Alternatives
Recent user activities on Tesseract
- EngiwebLtd added Tesseract as alternative(s) to WordsFromImage
- lharolds added Tesseract as alternative(s) to Stack: PDF Scanner by Google Area 120
- ClareReynolds added Tesseract as alternative(s) to UPDF - PDF Reader&File Manger App
In terms of OCR this tesseract is fantastic. I compared it to ABBYY 14 and tesseract had fewer errors on dictionary words. While it doesn't offer layout preservation with the OCR (i.e. converting into an editable document that should print similarly) you'll likely make up for that in the reduced time needed to fix OCR errors.
For handling PDFs you'll need to convert them to an image file, first - pdftopng (an Open Source tool that can be found in the Xpdf project)