Q: When I OCR a PDF document, I see a message in the dialog, reading “Page [x] contains invisible text… not processed” . What is it and how can I solve it? A: PDF Studio performs OCR page by page and the message you are seeing means that the corresponding page has already been OCRed (using PDF […]
Category: OCR
OCR: Optical Character Recognition / Text recognition
OCR a Batch of PDF Documents
Q: How can I OCR a bunch of PDF documents all at once? A: PDF Studio 9 and above comes with a Batch OCR Option that allows you to OCR multiple PDF files at once. This is useful if you need to add text to a large number of documents. To OCR multiple PDFs using the Batch OCR […]
How to OCR a PDF Document to add Searchable Text
From Existing Document Launch PDF Studio and open the PDF document that you wish to add searchable text to Go to Document ->OCR – Create Searchable PDF from the top menu From the Language drop down select the language you wish to use Note: The first time using OCR you will need to download the language packs. To do […]
Permission error downloading OCR languages
In PDF Studio 8, when attempting to download OCR language files, you may receive an error looking like: Error: user does not have permission to write to: opt/pdfstudio8/tess/tessdata. OCR language files are downloaded into PDF Studio installation folder and sometimes a user will not have the permission to write in this folder. If you see […]
PDF OCR for Mac, Windows, and Linux
Q: Does PDF Studio, Qoppa’s PDF editor for Mac, Windows and Linux, have an OCR (Optical Character Recognition) function to recognize and add text to PDF documents? A: Yes! OCR was added in version 8 of PDF Studio (Pro edition). PDF Studio Pro can apply OCR to existing PDF documents (turning them into searchable PDFs) […]
OCR Languages
Integrated OCR Languages: Within PDF Studio, it is possible to download and install the following languages for OCR. 5 most common languages: English French German Italian Spanish Other languages available: Danish Dutch Finnish Norwegian Polish Portuguese Swedish Non-Latin Languages (including CJK) For PDF Studio 10 & below For advanced users only, in addition to the […]
Can’t add header/footer/watermark after OCR
In PDF Studio 8, attempting to add a header, footer, or watermark after running OCR on a document will result in the mark not showing up on the document. This issue will be fixed in version 9.0 as well as in a minor release for existing version 8 installations. In the interim, a simple workaround […]
