# OCR of PDF-documents using GData

**URL:** <https://www.ruby-forum.com/t/ocr-of-pdf-documents-using-gdata/179336>\
**Category:** Ruby\
**Created:** [November 22, 2009, 2:40pm UTC](https://www.ruby-forum.com/t/ocr-of-pdf-documents-using-gdata/179336 "2009-11-22T14:40:09Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![ahead](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/c77e96/32.png) [@ahead](https://www.ruby-forum.com/u/ahead)\
**Post date:** [November 22, 2009, 2:40pm UTC](https://www.ruby-forum.com/t/ocr-of-pdf-documents-using-gdata/179336/1 "2009-11-22T14:40:09Z")

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Hi,

Has anybody been able to perform OCR on a pdf document using GData?

[http://googledataapis.blogspot.com/2009/09/import-scans-or-go-multilingual.html](http://googledataapis.blogspot.com/2009/09/import-scans-or-go-multilingual.html)

Png and jpgs work fine after setting @client.version = ‘3’ in  
GData::Client::DocList but when I try pdf-files I get:

#\<GData::Client::BadRequestError: request error 400:   
  
GData  
`InvalidEntryException`  
Could not convert document.

Regards,  
Abigail