diff --git a/CHANGELOG.md b/CHANGELOG.md
index 032c17bf7..ba185a82b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,6 +20,12 @@ Categories Used:
 
 ## [Unreleased](https://github.com/ouch-org/ouch/compare/0.4.1...HEAD)
 
+### New Features
+
+- Add flags to configure the compression level
+  - `--level` to precisely set the compression level [\#372](https://github.com/ouch-org/ouch/pull/372) ([xgdgsc](https://github.com/xgdgsc))
+  - `--fast` and `--slow` [\#374](https://github.com/ouch-org/ouch/pull/374) ([figsoda](https://github.com/figsoda))
+
 ### Improvements
 
 - Multi-threaded compression for gzip and snappy using gzp [\#348](https://github.com/ouch-org/ouch/pull/348) ([figsoda](https://github.com/figsoda))
diff --git a/src/cli/args.rs b/src/cli/args.rs
index 1de90beff..266432fab 100644
--- a/src/cli/args.rs
+++ b/src/cli/args.rs
@@ -61,8 +61,18 @@ pub enum Subcommand {
         output: PathBuf,
 
         /// Compression level, applied to all formats
-        #[arg(short, long)]
+        #[arg(short, long, group = "compression-level")]
         level: Option<i16>,
+
+        /// Fastest compression level possible,
+        /// conflicts with --level and --slow
+        #[arg(long, group = "compression-level")]
+        fast: bool,
+
+        /// Slowest (and best) compression level possible,
+        /// conflicts with --level and --fast
+        #[arg(long, group = "compression-level")]
+        slow: bool,
     },
     /// Decompresses one or more files, optionally into another folder
     #[command(visible_alias = "d")]
diff --git a/src/commands/mod.rs b/src/commands/mod.rs
index a4a3c8239..2d741406c 100644
--- a/src/commands/mod.rs
+++ b/src/commands/mod.rs
@@ -45,6 +45,8 @@ pub fn run(
             files,
             output: output_path,
             level,
+            fast,
+            slow,
         } => {
             // After cleaning, if there are no input files left, exit
             if files.is_empty() {
@@ -73,6 +75,14 @@ pub fn run(
                 None => return Ok(()),
             };
 
+            let level = if fast {
+                Some(1) // Lowest level of compression
+            } else if slow {
+                Some(i16::MAX) // Highest level of compression
+            } else {
+                level
+            };
+
             let compress_result = compress_files(
                 files,
                 formats,