diff --git a/Cargo.lock b/Cargo.lock
index 418de4f..c7a31f8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,6 +2,424 @@
 # It is not intended for manual editing.
 version = 3
 
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+ "termcolor",
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 [[package]]
 name = "minedmap"
 version = "0.1.0"
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+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc",
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diff --git a/Cargo.toml b/Cargo.toml
index d981c31..25eb4e2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,3 +7,7 @@ license = "BSD-2-Clause"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+anyhow = "1.0.68"
+clap = { version = "4.1.4", features = ["derive"] }
+fastnbt = "2.3.2"
+flate2 = "1.0.25"
diff --git a/TODO.md b/TODO.md
new file mode 100644
index 0000000..e6c14f6
--- /dev/null
+++ b/TODO.md
@@ -0,0 +1,8 @@
+# TODO
+
+## Optimizations
+
+- To check:
+  - fastnbt borrow
+  - fastnbt from_reader
+  - flate2 backends
diff --git a/src/bin/nbtdump.rs b/src/bin/nbtdump.rs
new file mode 100644
index 0000000..20236f7
--- /dev/null
+++ b/src/bin/nbtdump.rs
@@ -0,0 +1,30 @@
+use std::{fs::File, io::prelude::*, path::PathBuf};
+
+use anyhow::{Context, Result};
+use clap::Parser;
+use flate2::read::GzDecoder;
+
+#[derive(Debug, Parser)]
+struct Args {
+	/// Filename to dump
+	file: PathBuf,
+}
+
+fn main() -> Result<()> {
+	let args = Args::parse();
+
+	let file = File::open(&args.file).context("Failed to open file")?;
+
+	let mut decoder = GzDecoder::new(file);
+	let mut buf = vec![];
+	decoder
+		.read_to_end(&mut buf)
+		.context("Failed to read file")?;
+
+	let nbt: fastnbt::Value =
+		fastnbt::from_bytes(buf.as_slice()).context("Failed to decode NBT data")?;
+
+	println!("{:#x?}", nbt);
+
+	Ok(())
+}