diff --git a/src/layout.rs b/src/layout.rs
index 0cad56c..77132e2 100644
--- a/src/layout.rs
+++ b/src/layout.rs
@@ -9,7 +9,6 @@ use super::term::*;
 use log::error;
 use serde::{Deserialize, Serialize};
 
-pub const MAX_SIZE_TO_PREVIEW: u64 = 1_000_000_000;
 pub const CHAFA_WARNING: &str =
     "From v1.1.0, the image preview needs chafa (>= v1.10.0). For more details, please see help by `:h` ";
 
@@ -40,7 +39,8 @@ pub struct Layout {
 #[derive(Debug, PartialEq, PartialOrd, Eq, Ord, Clone)]
 pub enum PreviewType {
     NotReadable,
-    TooBigSize,
+    TooBigImage,
+    TooBigText,
     Directory,
     Image,
     Text,
@@ -186,8 +186,11 @@ impl Layout {
                 Some(PreviewType::NotReadable) => {
                     print!("(file not readable)");
                 }
-                Some(PreviewType::TooBigSize) => {
-                    print!("(file too big for preview)");
+                Some(PreviewType::TooBigImage) => {
+                    print!("(image too big for preview: over 100MB)");
+                }
+                Some(PreviewType::TooBigText) => {
+                    print!("(text too big for preview: over 1MB)");
                 }
                 Some(PreviewType::Directory) => {
                     self.preview_directory(item);
@@ -214,10 +217,10 @@ impl Layout {
                     }
                 }
                 Some(PreviewType::Binary) => {
-                    print!("(Binary file)");
+                    print!("(binary file)");
                 }
                 _ => {
-                    print!("(Not Available)");
+                    print!("(not available)");
                 }
             }
         }
diff --git a/src/state.rs b/src/state.rs
index 632a818..6cd4f2d 100644
--- a/src/state.rs
+++ b/src/state.rs
@@ -42,6 +42,9 @@ use std::os::unix::fs::PermissionsExt;
 pub const BEGINNING_ROW: u16 = 3;
 pub const EMPTY_WARNING: &str = "Are you sure to empty the trash directory? (if yes: y)";
 
+const MAX_SIZE_TO_PREVIEW: u64 = 1_000_000_000;
+const MAX_SIZE_TO_PREVIEW_TEXT: u64 = 1_000_000;
+
 #[derive(Debug, Default)]
 pub struct State {
     pub list: Vec<ItemInfo>,
@@ -1914,11 +1917,15 @@ fn check_zoxide() -> bool {
 /// Set content type from ItemInfo.
 fn set_preview_content_type(item: &mut ItemInfo) {
     if item.file_size > MAX_SIZE_TO_PREVIEW {
-        item.preview_type = Some(PreviewType::TooBigSize);
+        item.preview_type = Some(PreviewType::TooBigImage);
     } else if is_supported_image(item) {
         item.preview_type = Some(PreviewType::Image);
     } else if let Ok(content) = &std::fs::read(&item.file_path) {
         if content_inspector::inspect(content).is_text() {
+            if item.file_size > MAX_SIZE_TO_PREVIEW_TEXT {
+                item.preview_type = Some(PreviewType::TooBigText);
+                return;
+            }
             if let Ok(content) = String::from_utf8(content.to_vec()) {
                 let content = content.replace('\t', "    ");
                 item.content = Some(content);