Open-source Go SDKfor everything PDF.

go get github.com/infosec554/golang-pdf-skd

package main

import (
	"log"

	pdf "github.com/infosec554/golang-pdf-skd"
)

func main() {
	// Compress a PDF down to recommended quality.
	if err := pdf.Compress("input.pdf", "out.pdf", pdf.QualityRecommended); err != nil {
		log.Fatal(err)
	}

	// Merge several PDFs in order.
	if err := pdf.Merge([]string{"a.pdf", "b.pdf", "c.pdf"}, "merged.pdf"); err != nil {
		log.Fatal(err)
	}

	// Convert Word to PDF (uses LibreOffice under the hood).
	if err := pdf.WordToPDF("report.docx", "report.pdf"); err != nil {
		log.Fatal(err)
	}
}