diff --git a/qurator/dinglehopper/cli_extract.py b/qurator/dinglehopper/cli_extract.py
index 0d4f713..9c51d34 100644
--- a/qurator/dinglehopper/cli_extract.py
+++ b/qurator/dinglehopper/cli_extract.py
@@ -1,9 +1,6 @@
-import os
-
 import click
 from ocrd_utils import initLogging
 
-from .extracted_text import ExtractedText
 from .ocr_files import extract
 
 
diff --git a/qurator/dinglehopper/cli_line_dirs.py b/qurator/dinglehopper/cli_line_dirs.py
index 06d12b8..59c4a1f 100644
--- a/qurator/dinglehopper/cli_line_dirs.py
+++ b/qurator/dinglehopper/cli_line_dirs.py
@@ -1,19 +1,13 @@
 import os
-import sys
 import itertools
 
 import click
 from jinja2 import Environment, FileSystemLoader
-from markupsafe import escape
-from uniseg.graphemecluster import grapheme_clusters
 from ocrd_utils import initLogging
 
 from .character_error_rate import character_error_rate_n
 from .word_error_rate import word_error_rate_n, words_normalized
-from .align import seq_align
-from .extracted_text import ExtractedText
 from .ocr_files import plain_extract
-from .config import Config
 from .cli import gen_diff_report, json_float
 
 
diff --git a/qurator/dinglehopper/edit_distance.py b/qurator/dinglehopper/edit_distance.py
index 24f6928..531beeb 100644
--- a/qurator/dinglehopper/edit_distance.py
+++ b/qurator/dinglehopper/edit_distance.py
@@ -1,17 +1,12 @@
 from __future__ import division, print_function
 
 import unicodedata
-from functools import partial, lru_cache
-from typing import Sequence, Tuple
 
-import numpy as np
 from multimethod import multimethod
 from uniseg.graphemecluster import grapheme_clusters
-from tqdm import tqdm
 from rapidfuzz.distance import Levenshtein
 
 from .extracted_text import ExtractedText
-from .config import Config
 
 
 @multimethod
diff --git a/qurator/dinglehopper/ocr_files.py b/qurator/dinglehopper/ocr_files.py
index 69f4df7..94c34d7 100644
--- a/qurator/dinglehopper/ocr_files.py
+++ b/qurator/dinglehopper/ocr_files.py
@@ -3,7 +3,6 @@ from __future__ import division, print_function
 import os
 import sys
 from typing import Iterator
-from warnings import warn
 
 from lxml import etree as ET
 from lxml.etree import XMLSyntaxError