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--- a/README.md
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@@ -1,3 +1,14 @@
 # synapse-cleaner
 
-A bash script for vacuuming synapse
\ No newline at end of file
+A bash script for vacuuming synapse
+
+## Requirement : 
+- Bash
+- https://github.com/matrix-org/rust-synapse-compress-state
+
+## Installation 
+- Copy `utils/config.tpl` to `utils/config` and fill it.
+- Launch `bash synapse-cleaner.sh PARTIAL` to launch without vacuuming
+- Launch `bash synapse-cleaner.sh FULL` to launch with vacuuming, DB compressing... It's heavy for server but it's very usefull.
+
+