On 19.03.2025 22:22, Rajagopal C.V. wrote:
Please provide me some help to add tags to an existing PDF which is
currently u tagged.

This is extremely difficult. You'd probably need years to write this from scratch unless it's files that are all similar. Use a commercial product.

To understand why, 1) read stackoverflow answers that show how to add tags from scratch, 2) use PDFDebugger to look at a file with tags, look at the content stream and search for MCID, then look at the structure tree (you need to change the "view" in the menu).

https://stackoverflow.com/questions/79083813

https://stackoverflow.com/questions/79126664


Tilman


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