<dependency>
    <groupId>e-iceblue</groupId>
    <artifactId>spire.pdf.free</artifactId>
    <version>9.12.3</version>
</dependency>

implementation 'e-iceblue:spire.pdf.free:9.12.3@jar'

<dependency org="e-iceblue" name="spire.pdf.free" rev="9.12.3">
  <artifact name="spire.pdf.free" ext="jar" />
</dependency>

libraryDependencies += "e-iceblue" % "spire.pdf.free" % "9.12.3"

[e-iceblue/spire.pdf.free "9.12.3" :extension "jar"]