Convert Scanned PNG images to PDF and back to PNG (when needed)

• zotero

  254 9,176 9.9 JavaScript

  Zotero is a free, easy-to-use tool to help you collect, organize, annotate, cite, and share your research sources.

  

If you are assuming that part 1 and part 2 occur simultaneously then this question becomes redundant. To clarify, the image processing that will be done further down the line requires original PNG files, but multi-page PDF's are easier to manage than multiple PNG files using tools like Zotero

• Apache PDFBox

  26 2,379 9.7 Java

  Mirror of Apache PDFBox

  

Using PDFBox Apache mentioned in question's comment, and running the command java -jar pdfbox-app-2.0.23.jar PDFToImage -prefix pdfbox -format PNG -dpi 300 tiff2pdf.pdf produces image of size 25.3 MiB. (Note the uppercase PNG). The hashes of the re-generated PNG file is different from the original file. Should this be my emphasis?

• WorkOS

  workos.com sponsored

  The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

  

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