VIETPDF KNOWLEDGE

Understand your PDF before changing it

These guides explain what a tool can do, what you should not assume, and how to verify a result before sharing a document.

Local PDF processing vs cloud processing

Understand local-first PDF tools, their tradeoffs and when uploading a document to a cloud service may be appropriate.

Distinguish basic metadata and XMP from visible content and other embedded data before sharing a PDF.

Learn how document bytes, PDF signatures and merge, rotate, extract or metadata operations relate to each other.

Understand the difference between PDF file size and RAM use, and reduce failures on memory-constrained devices.