diff --git a/CHANGELOG.md b/CHANGELOG.md
index cadc339..e37412b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@ All notable changes to this project will be documented in this file.
 - almost all option (-A)
 - full path option (-F)
 - add relative time option (-T)
+= add mime type (-M)
 
 ## [2024.6]
 ### Added
diff --git a/lsv/entry.v b/lsv/entry.v
index bd85aae..fd04e70 100644
--- a/lsv/entry.v
+++ b/lsv/entry.v
@@ -4,6 +4,7 @@ import crypto.sha1
 import crypto.sha256
 import crypto.sha512
 import crypto.blake2b
+import net.http.mime
 import math
 
 struct Entry {
@@ -26,6 +27,7 @@ struct Entry {
 	size_ki     string
 	size_kb     string
 	checksum    string
+	mime_type   string
 	invalid     bool // lstat could not access
 }
 
@@ -79,6 +81,9 @@ fn make_entry(file string, dir_name string, options Options) Entry {
 	is_exe := !is_dir && is_executable(stat)
 	is_file := filetype == .regular
 	indicator := if is_dir && options.dir_indicator { '/' } else { '' }
+	if options.mime_type {
+		os.file_ext(file).trim_left('.')
+	}
 	name := if options.full_path { os.real_path(path) + indicator } else { file + indicator }
 
 	return Entry{
@@ -101,6 +106,7 @@ fn make_entry(file string, dir_name string, options Options) Entry {
 		size_ki:     if options.size_ki { readable_size(size, true) } else { '' }
 		size_kb:     if options.size_kb { readable_size(size, false) } else { '' }
 		checksum:    if is_file { checksum(file, dir_name, options) } else { '' }
+		mime_type:   get_mime_type(file, filetype, is_exe)
 		invalid:     invalid
 	}
 }
@@ -155,6 +161,18 @@ fn checksum(name string, dir_name string, options Options) string {
 	}
 }
 
+fn get_mime_type(file string, file_type os.FileType, is_exe bool) string {
+	if is_exe {
+		return 'application/octet-stream'
+	}
+	if file_type == .block_device || file_type == .character_device || file_type == .directory
+		|| file_type == .fifo || file_type == .symbolic_link || file_type == .socket {
+		return ''
+	}
+	mt := mime.get_mime_type(os.file_ext(file).trim_left('.'))
+	return mt
+}
+
 @[inline]
 fn is_executable(stat os.Stat) bool {
 	return stat.get_mode().bitmask() & 0b001001001 > 0
diff --git a/lsv/format_long.v b/lsv/format_long.v
index 5c0c55e..5cfb2ef 100644
--- a/lsv/format_long.v
+++ b/lsv/format_long.v
@@ -15,6 +15,7 @@ const date_modified_title = 'Modified'
 const date_accessed_title = 'Accessed'
 const date_status_title = 'Status Change'
 const name_title = 'Name'
+const mime_type_title = 'Mime Type'
 const unknown = '?'
 const block_size = 5
 const space = ' '
@@ -34,6 +35,7 @@ struct Longest {
 	mtime      int
 	atime      int
 	ctime      int
+	mime_type  int
 }
 
 enum StatTime {
@@ -69,10 +71,16 @@ fn format_long_listing(entries []Entry, options Options) {
 			print(table_border_pad_left)
 		}
 
+		// mime type
+		if options.mime_type {
+			print(format_cell(entry.mime_type, longest.mime_type, .right, no_style, options))
+			print_space()
+		}
+
 		// inode
 		if options.inode {
 			content := if entry.invalid { unknown } else { entry.stat.inode.str() }
-			print(format_cell(content, longest.inode, Align.right, no_style, options))
+			print(format_cell(content, longest.inode, .right, no_style, options))
 			print_space()
 		}
 
@@ -200,44 +208,19 @@ fn format_long_listing(entries []Entry, options Options) {
 
 fn longest_entries(entries []Entry, options Options) Longest {
 	return Longest{
+		// vfmt off
 		inode:      if options.inode { longest_inode_len(entries, inode_title, options) } else { 0 }
-		nlink:      if !options.no_hard_links {
-			longest_nlink_len(entries, links_title, options)
-		} else {
-			0
-		}
-		owner_name: if !options.no_owner_name {
-			longest_owner_name_len(entries, owner_title, options)
-		} else {
-			0
-		}
-		group_name: if !options.no_group_name {
-			longest_group_name_len(entries, group_title, options)
-		} else {
-			0
-		}
+		nlink:      if !options.no_hard_links { longest_nlink_len(entries, links_title, options) } else { 0 }
+		owner_name: if !options.no_owner_name { longest_owner_name_len(entries, owner_title, options) } else { 0 }
+		group_name: if !options.no_group_name { longest_group_name_len(entries, group_title, options) } else { 0 }
 		size:       if !options.no_size { longest_size_len(entries, size_title, options) } else { 0 }
-		checksum:   if options.checksum.len == 0 {
-			longest_checksum_len(entries, options.checksum, options)
-		} else {
-			0
-		}
+		checksum:   if options.checksum.len == 0 { longest_checksum_len(entries, options.checksum, options) } else { 0 }
 		file:       longest_file_name_len(entries, name_title, options)
-		mtime:      if !options.no_date {
-			longest_time(entries, .modified, date_modified_title, options)
-		} else {
-			0
-		}
-		atime:      if options.accessed_date {
-			longest_time(entries, .accessed, date_accessed_title, options)
-		} else {
-			0
-		}
-		ctime:      if options.changed_date {
-			longest_time(entries, .changed, date_status_title, options)
-		} else {
-			0
-		}
+		mtime:      if !options.no_date { longest_time(entries, .modified, date_modified_title, options) } else { 0 }
+		atime:      if options.accessed_date { longest_time(entries, .accessed, date_accessed_title, options) } else { 0 }
+		ctime:      if options.changed_date { longest_time(entries, .changed, date_status_title, options) } else { 0 }
+		mime_type:  if options.mime_type { longest_mime_type(entries, mime_type_title, options) } else { 0 }
+		// vfmt on
 	}
 }
 
@@ -259,6 +242,11 @@ fn format_header(options Options, longest Longest) (string, []int) {
 	if options.table_format {
 		buffer += table_border_pad_left
 	}
+	if options.mime_type {
+		title := if options.header { mime_type_title } else { '' }
+		buffer += right_pad(title, longest.mime_type) + table_pad
+		cols << real_length(buffer) - 1
+	}
 	if options.inode {
 		title := if options.header { inode_title } else { '' }
 		buffer += left_pad(title, longest.inode) + table_pad
@@ -439,7 +427,7 @@ fn format_time(entry Entry, stat_time StatTime, options Options) string {
 	date := if options.time_relative {
 		local.relative_short()
 	} else {
-		mut dt := local.custom_format(time_format(options))
+		dt := local.custom_format(time_format(options))
 		if dt.starts_with('0') {
 			' ' + dt[1..]
 		} else {
@@ -507,3 +495,9 @@ fn longest_time(entries []Entry, stat_time StatTime, title string, options Optio
 	max := arrays.max(lengths) or { 0 }
 	return if options.header { max(real_length(title), max) } else { max }
 }
+
+fn longest_mime_type(entries []Entry, title string, options Options) int {
+	mime_types := entries.map(it.mime_type.len)
+	max := arrays.max(mime_types) or { 0 }
+	return if options.header { max(real_length(title), max) } else { max }
+}
diff --git a/lsv/options.v b/lsv/options.v
index 7bd2747..28e6c3d 100644
--- a/lsv/options.v
+++ b/lsv/options.v
@@ -61,6 +61,7 @@ struct Options {
 	time_compact          bool
 	time_compact_with_day bool
 	time_relative         bool
+	mime_type             bool
 	checksum              string
 	//
 	// from ls colors
@@ -127,6 +128,7 @@ fn parse_args(args []string) Options {
 	time_compact := fp.bool('', `J`, false, 'show time in compact format')
 	time_compact_with_day := fp.bool('', `L`, false, 'show time in compact format with week day')
 	time_relative := fp.bool('', `T`, false, 'show relative time')
+	mime_type := fp.bool('', `M`, false, 'show mime type')
 	inode := fp.bool('', `N`, false, 'show inodes')
 	no_wrap := fp.bool('', `Z`, false, 'do not wrap long lines\n')
 
@@ -166,6 +168,7 @@ fn parse_args(args []string) Options {
 		inode:                 inode
 		list_by_lines:         list_by_lines
 		long_format:           long_format
+		mime_type:             mime_type
 		no_count:              no_count
 		no_date:               no_date
 		no_dim:                no_dim