PDFTron library comes in two versions: full and standard.

In order to help our customers to create applications with a smaller APK size, the standard version omits a number of features such as:

• Convert, Optimizer, Redactor, Flattener, DocumentPreviewCache, ReflowProcessor classes
• PDF/A validation/conversion (i.e. PDFACompliance)
• Converting PDF pages to TIFF format (i.e. PDFDraw will not work when using these formats)

The following table compares the APK size of a sample project in which different architecture and PDFTron library versions were used.

Here are some scenarios to help you decide which one to use:

• I need minimum size possible and I only need to render PDFs
  Standard version
• I want to use the Demo package
  Full version
• I need to display non-pdf documents
  Full version
• I need to display documents with reflow
  Full version
• I need to optimize, redact, or flatten PDFs
  Full version
• I need to convert PDF pages to TIFF formats
  Full version
• I need to build a file browser that displays all files on a device with first page preview for each
  Full version
• I need right to left support
  Full version

If none of the above fits your situation, you are more than welcome to consult the PDFTron support team to find the best option for you.