diff --git a/tensor-tools/src/main.rs b/tensor-tools/src/main.rs
index ad351171..0bda36d5 100644
--- a/tensor-tools/src/main.rs
+++ b/tensor-tools/src/main.rs
@@ -197,6 +197,11 @@ fn run_print(
     match format {
         Format::Npz => {
             let tensors = candle::npy::NpzTensors::new(file)?;
+            let names = if names.is_empty() {
+                tensors.names().into_iter().map(|v| v.to_string()).collect()
+            } else {
+                names
+            };
             for name in names.iter() {
                 println!("==== {name} ====");
                 match tensors.get(name)? {
@@ -209,6 +214,11 @@ fn run_print(
             use candle::safetensors::Load;
             let tensors = unsafe { candle::safetensors::MmapedSafetensors::new(file)? };
             let tensors: std::collections::HashMap<_, _> = tensors.tensors().into_iter().collect();
+            let names = if names.is_empty() {
+                tensors.keys().map(|v| v.to_string()).collect()
+            } else {
+                names
+            };
             for name in names.iter() {
                 println!("==== {name} ====");
                 match tensors.get(name) {
@@ -222,6 +232,15 @@ fn run_print(
         }
         Format::Pth => {
             let pth_file = candle::pickle::PthTensors::new(file, None)?;
+            let names = if names.is_empty() {
+                pth_file
+                    .tensor_infos()
+                    .keys()
+                    .map(|v| v.to_string())
+                    .collect()
+            } else {
+                names
+            };
             for name in names.iter() {
                 println!("==== {name} ====");
                 match pth_file.get(name)? {
@@ -238,6 +257,11 @@ fn run_print(
         Format::Ggml => {
             let mut file = std::fs::File::open(file)?;
             let content = candle::quantized::ggml_file::Content::read(&mut file, device)?;
+            let names = if names.is_empty() {
+                content.tensors.keys().map(|v| v.to_string()).collect()
+            } else {
+                names
+            };
             for name in names.iter() {
                 println!("==== {name} ====");
                 match content.tensors.get(name) {
@@ -252,6 +276,11 @@ fn run_print(
         Format::Gguf => {
             let mut file = std::fs::File::open(file)?;
             let content = gguf_file::Content::read(&mut file)?;
+            let names = if names.is_empty() {
+                content.tensor_infos.keys().map(|v| v.to_string()).collect()
+            } else {
+                names
+            };
             for name in names.iter() {
                 println!("==== {name} ====");
                 match content.tensor(&mut file, name, device) {