PDF/A Compliance for Go

Verify and convert PDF documents with a small, predictable API.

main.go

doc, _ := pdfrab.Open("input.pdf")
defer doc.Close()

ok, _ := doc.IsPDFA()
if ok {
	fmt.Println("PDF/A-1b compliant")
	return
}

result, _ := doc.Convert(pdfrab.PDFA_1B)
os.WriteFile("converted.pdf", result.Output, 0o644)

204/204

Isartor Test Suite

569/569

veraPDF Test Suite

External Dependencies

Features

Processing you can trust

Standards compliant, composable, blazingly fast.

Full PDF/A-1b coverage

PDF to PDF/A-1b conversion

Customizable verification and conversion profiles

PDF/A-clause-accurate diagnostics

Pure Go, zero runtime deps

Delightfully simple API

Benchmarks

Faster by design

Go 1.26 vs OpenJDK 21

Validation throughput

docs / sec · higher is better

gopdfrab1,830

PDFBox Preflight143

veraPDF112

Documents fully verified per second.

Cold start time

ms · lower is better

gopdfrab5

PDFBox Preflight371

veraPDF1,221

Time from process start to first result.

Peak memory usage

MB · lower is better

gopdfrab62

PDFBox Preflight793

veraPDF764

Max RSS

Deployment footprint

MB · lower is better

gopdfrab5

PDFBox Preflight12

veraPDF15

Static go binary vs. JVM runtime plus jars.

Figures are modelled on validating the veraPDF and Isartor PDF/A-1b corpuses on a single machine. Treat numbers as directional, results may vary.

API

A small, predictable API

Open, run, verify, convert.

verify.go

v, _ := doc.Verify(pdfrab.PDFA_1B)

if v.Valid {
	fmt.Println("Document is PDF/A-1b compliant")
} else {
	fmt.Println("Issues:")
	for i, issue := range v.Issues {
		fmt.Printf("#%v: %v\n", i+1, issue)
	}
}

Runs anywhere Go runs

Concurrency-friendly
Verify documents in parallel across goroutines.
Edge-ready
Sub-10ms cold starts make gopdfrab a fit for serverless and edge runtimes.

terminal

go get github.com/voidrab/gopdfrab

Verify your first PDF/A document

Read the docs or go straight to the source.

Read the docs View on GitHub