Imports github.com/hhrutter/pdfcpu/pkg/pdfcpu/fonts/metrics github.com/hhrutter/pdfcpu/pkg/log github.com/hhrutter/pdfcpu/pkg/types github.com/hhrutter/pdfcpu/pkg/filter github.com/hhrutter/pdfcpu/tiff github.com/pkg/errors Standard library imports image/png image image/color unicode/utf16 crypto/rc4 unicode crypto/md5 crypto/cipher crypto/aes bufio image/jpeg bytes crypto/rand encoding/binary encoding/hex fmt io io/ioutil math os path path/filepath sort strconv strings time unicode/utf8