Add example usage to README

README.md

@@ -37,6 +37,30 @@ pdf-slim input.pdf [output.pdf] [--dpi 200] [--min-font-bytes 150000]
 - `--min-font-bytes` — re-subset embedded TrueType fonts larger than this
   (default `150000`).
 
+### Example
+
+```
+[ phanes@forge.silogroup.lan ] << ~/Downloads >>
+
+[- du -sh 2026-06-08*
+28K    2026-06-08.docx
+1.8M    2026-06-08.pdf
+
+[ phanes@forge.silogroup.lan ] << ~/Downloads >>
+
+[- pdf-slim 2026-06-08.pdf 2026-06-08-small.pdf
+input:  2026-06-08.pdf  (1,852,511 bytes)
+method: font-resubset (pixel-identical at 200 dpi)
+output: 2026-06-08-small.pdf  (192,810 bytes, -89.6%)
+
+[ phanes@forge.silogroup.lan ] << ~/Downloads >>
+
+[- du -sh 2026-06-08*
+28K    2026-06-08.docx
+1.8M    2026-06-08.pdf
+192K    2026-06-08-small.pdf
+```
+
 ## Requirements
 
 The following tools must be on `PATH`: