diff --git a/lib/python/qmk/cli/format/text.py b/lib/python/qmk/cli/format/text.py
index 344631081b4..861220eac83 100644
--- a/lib/python/qmk/cli/format/text.py
+++ b/lib/python/qmk/cli/format/text.py
@@ -5,7 +5,20 @@ from subprocess import DEVNULL
 
 from milc import cli
 
-from qmk.path import normpath
+from qmk.path import normpath, is_relative_to
+
+IGNORE_SUFFIXES = [
+    'hex',
+    'ico',
+    'jpeg',
+    'jpg',
+    'png',
+]
+IGNORE_DIRS = [
+    'lib/fnv',
+    'lib/lib8tion',
+    'lib/usbhost',
+]
 
 
 def _get_chunks(it, size):
@@ -15,16 +28,40 @@ def _get_chunks(it, size):
     return iter(lambda: tuple(islice(it, size)), ())
 
 
+def _check_dos2unix():
+    """Check for a 'valid' dos2unix executable
+    """
+    dos2unix = cli.run(['dos2unix', '--help'])
+    return dos2unix.returncode == 0 and '--add-eol' in dos2unix.stdout
+
+
 def dos2unix_run(files):
     """Spawn multiple dos2unix subprocess avoiding too long commands on formatting everything
     """
     for chunk in _get_chunks([normpath(file).as_posix() for file in files], 10):
-        dos2unix = cli.run(['dos2unix', *chunk])
+        dos2unix = cli.run(['dos2unix', '--add-eol', *chunk])
 
         if dos2unix.returncode:
+            cli.log.debug(dos2unix.stdout)
+            cli.log.error(dos2unix.stderr)
             return False
 
 
+def filter_files(files):
+    """Yield only files to be formatted and skip the rest
+    """
+    ret = []
+
+    for file in map(normpath, filter(None, files)):
+        if file.suffix[1:] in IGNORE_SUFFIXES:
+            continue
+
+        if not any(is_relative_to(file, i) for i in IGNORE_DIRS):
+            ret.append(file)
+
+    return ret
+
+
 @cli.argument('-b', '--base-branch', default='origin/master', help='Branch to compare to diffs to.')
 @cli.argument('-a', '--all-files', arg_only=True, action='store_true', help='Format all files.')
 @cli.argument('files', nargs='*', arg_only=True, type=normpath, help='Filename(s) to format.')
@@ -32,9 +69,17 @@ def dos2unix_run(files):
 def format_text(cli):
     """Ensure text files have the proper line endings.
     """
+    if not _check_dos2unix():
+        cli.log.error('Formatting requires an up-to-date version of "dos2unix"')
+        return False
+
     # Find the list of files to format
     if cli.args.files:
-        files = list(cli.args.files)
+        files = filter_files(cli.args.files)
+
+        if not files:
+            cli.log.error('No valid files in filelist: %s', ', '.join(map(str, cli.args.files)))
+            return False
 
         if cli.args.all_files:
             cli.log.warning('Filenames passed with -a, only formatting: %s', ','.join(map(str, files)))
@@ -42,12 +87,12 @@ def format_text(cli):
     elif cli.args.all_files:
         git_ls_cmd = ['git', 'ls-files']
         git_ls = cli.run(git_ls_cmd, stdin=DEVNULL)
-        files = list(filter(None, git_ls.stdout.split('\n')))
+        files = filter_files(git_ls.stdout.split('\n'))
 
     else:
         git_diff_cmd = ['git', 'diff', '--name-only', cli.args.base_branch]
         git_diff = cli.run(git_diff_cmd, stdin=DEVNULL)
-        files = list(filter(None, git_diff.stdout.split('\n')))
+        files = filter_files(git_diff.stdout.split('\n'))
 
     # Sanity check
     if not files: