Comparisons
How gopdfrab compares
Honest scope and trade-off comparisons against the tools you would otherwise reach for.
gopdfrab is narrow on purpose: PDF/A-1b verification and conversion, in pure Go, with no runtime dependencies. That buys speed and a small deployment, and it makes gopdfrab the wrong tool for several jobs the alternatives handle well. These pages say which is which.
vs veraPDFThe industry reference PDF/A validator. Broader standard coverage, and the tool a compliance audit is most likely to name.vs Apache PDFBox PreflightPDF/A-1b validation inside the PDFBox ecosystem. The same scope as gopdfrab, reached from the other side of the runtime divide.vs other Go PDF librariesWhere pdfcpu, UniPDF, fpdf and the PDFium bindings fit, and which of them actually do PDF/A conformance.
A note on fairness
Every performance figure quoted on these pages comes from one run of the benchmark harness in the gopdfrab repository, over the same corpus on the same machine, measured 2026-08-04. Where a competing tool is better, or covers something gopdfrab does not, the page says so.