brotli: add page (#5016)

pages/common/brotli.md

@@ -0,0 +1,24 @@
+# Brotli
+
+> Compress/uncompress files with brotli compression.
+> More information: <https://github.com/google/brotli>.
+
+- Compress a file, creating a compressed version next to the file:
+
+`brotli {{file.ext}}`
+
+- Decompress a file, creating an uncompressed version next to the file:
+
+`brotli -d {{file.ext}}.br`
+
+- Compress a file specifying the output filename:
+
+`brotli {{file.ext}} -o {{compressed_file.ext.br}}`
+
+- Decompress a brotli file specifying the output filename:
+
+`brotli -d {{compressed_file.ext.br}} -o {{file.ext}}`
+
+- Specify the compression level. 1=Fastest (Worst), 11=Slowest (Best):
+
+`brotli -q {{11}} {{file.ext}} -o {{compressed_file.ext.br}}`