THPDFJobProcessor.Capabilities
Returns a JSON document describing the operations, formats, and limits supported by the job processor
class function Capabilities: AnsiString; static;The unit is HPDFDocJobs; the report states the schema and ABI version, the zero-based page index convention, and the UTF-8 request encoding
Document operations include info, render, text extraction and replacement, form reading, filling, flattening, and exchange, OCR layers, redaction, signing, PDF/A-4 raster archival, structured and table export, and generic and contract comparison
File operations cover merge, split, optimise, encrypt, and validate; the report also lists render formats, OCR engines, signing profiles with digest methods and timestamp transport, rich-text form capabilities, and callback contracts
Hosts should parse this document instead of hard-coding operation names so feature detection tracks the library build