PDFedit

PDFedit is a Linux PDF editor published by The PDFedit authors under the GPL-2.0 license. Its distinguishing function is the ability to browse and edit the tree of raw PDF objects. This makes it suitable for users who need to inspect the internal structure of a PDF file, not only view pages as they appear in a reader.

The program is aimed at detailed PDF modification and examination. Instead of treating a document only as visible text and graphics, it exposes objects that make up the file, allowing edits at a lower level. That approach can be useful for repair, analysis, or precise changes, but it also means the software is more appropriate for users who understand PDF structure. The available platform listed here is Linux.