Can Barcode Reader SDK read PDF files? Do I need to pay for this feature?
Yes — Dynamsoft Barcode Reader supports reading barcodes from PDF files in most editions (see the official Features page).
The only exceptions are the JavaScript edition and the Mobile edition, which currently do not support PDF decoding.
Do I need an extra license to read PDF files?
No. Reading from PDF files does not require any additional license. It is fully included in the standard SDK license.
How to scan specific pages of a pdf file?
When processing PDF files, you can use the set_pages() method to specify which pages should be scanned.
This helps improve performance by avoiding unnecessary page processing.
- DirectoryFetcher
# Example DirectoryFetcher: process only page 1 and page 3
# (page index follows the SDK's page numbering rules)
fetcher = DirectoryFetcher()
fetcher.set_directory("PATH_TO_YOUR_FOLDER")
fetcher.set_pages([1, 3])
cvr.set_input(fetcher)
- FileFetcher
# Example FileFetcher: process only page 1 and page 3
# (page index follows the SDK's page numbering rules)
fetcher = FileFetcher()
fetcher.set_file("PATH_TO_YOUR_PDF")
fetcher.set_pages([1, 3])
cvr.set_input(fetcher)
Additional Note: Multithreading Limitation
Please be aware that PDF decoding does not support multithreading.
Even if your application uses multiple threads, PDF files will still be processed single-threaded due to the way PDF pages are handled internally.
If you need higher performance, it is recommended to convert PDF pages into images and then decode them in parallel.
Yes
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