The SetaPDF-Core component is the root of all other SetaPDF components. See how you can interact with PDF documents on a low level in pure PHP.
Analyze a PDF document for specific properties, such as e.g. encryption, text, images, fonts, colors or digital signatures.
PDFs can have various types of annotations. See how to access, create and edit them here. For example: extract comments, modify links or flatten annotations.
See how you can do more general tasks on a PDF documents such as access or modify metadata or attachments. You also can remove digital signatures or usage rights.
Convert images to PDF files - also at a specifc resolution. Or replace images in an existing PDF document.
See how to access and modify a PDF documents bookmark outline.
See how to access, modify and/or delete pages or their properties (such as boundary boxes, size, rotation).