diff --git a/src/zimscraperlib/__init__.py b/src/zimscraperlib/__init__.py
index 3383e609..b3a08de0 100644
--- a/src/zimscraperlib/__init__.py
+++ b/src/zimscraperlib/__init__.py
@@ -2,7 +2,9 @@
 # -*- coding: utf-8 -*-
 # vim: ai ts=4 sts=4 et sw=4 nu
 
+import logging as std_logging
+
 from .constants import NAME
 from .logging import getLogger
 
-logger = getLogger(NAME)
+logger = getLogger(NAME, level=std_logging.DEBUG)
diff --git a/src/zimscraperlib/zim/filesystem.py b/src/zimscraperlib/zim/filesystem.py
index 87bffcf7..d8a4fec5 100644
--- a/src/zimscraperlib/zim/filesystem.py
+++ b/src/zimscraperlib/zim/filesystem.py
@@ -157,6 +157,7 @@ def add_to_zim(
         for leaf in fpath.iterdir():
             add_to_zim(root, zim_file, leaf, rewrite_links)
     else:
+        logger.debug(f"Creating FileArticle from {root} -- {fpath} -- {rewrite_links}")
         art = FileArticle(root, fpath, rewrite_links)
         zim_file.add_zim_article(art)
 
diff --git a/src/zimscraperlib/zim/rewriting.py b/src/zimscraperlib/zim/rewriting.py
index 5d268866..928936d6 100644
--- a/src/zimscraperlib/zim/rewriting.py
+++ b/src/zimscraperlib/zim/rewriting.py
@@ -16,6 +16,7 @@
 
 from bs4 import BeautifulSoup
 
+from .. import logger
 from ..filesystem import get_file_mimetype
 from ..types import get_mime_for_name, ARTICLE_MIME, FONT_MIMES
 
@@ -140,6 +141,7 @@ def fix_file_target_for(
     """fixed link from source to target: relative and namespace aware
 
     Links to non-local file targets are kept as-is if require_target is set"""
+    logger.debug(f"..fix_target_for {root}, {source}, {target}, {require_target}")
     fpath = root / target
     if require_target and not fpath.exists():
         return str(target)