diff --git a/papis_extract/extractors/pdf.py b/papis_extract/extractors/pdf.py
index 5df854e..3ba9873 100644
--- a/papis_extract/extractors/pdf.py
+++ b/papis_extract/extractors/pdf.py
@@ -25,7 +25,12 @@ class PdfExtractor:
         if not filename.is_file():
             logger.error(f"File {str(filename)} not readable.")
             return False
-        return self._is_pdf(filename)
+
+        if not self._is_pdf(filename):
+            return False
+
+        logger.debug(f"Found processable annotation file: {filename}")
+        return True
 
     def run(self, filename: Path) -> list[Annotation]:
         """Extract annotations from a file.
diff --git a/papis_extract/extractors/pocketbook.py b/papis_extract/extractors/pocketbook.py
index 46ba66b..5fc0585 100644
--- a/papis_extract/extractors/pocketbook.py
+++ b/papis_extract/extractors/pocketbook.py
@@ -20,11 +20,13 @@ class PocketBookExtractor:
             return False
 
         html = BeautifulSoup(content, features="xml")
-        return bool(
-            html.find(
-                "meta", {"name": "generator", "content": "PocketBook Bookmarks Export"}
-            )
-        )
+        if not html.find(
+            "meta", {"name": "generator", "content": "PocketBook Bookmarks Export"}
+        ):
+            return False
+
+        logger.debug(f"Found processable annotation file: {filename}")
+        return True
 
     def run(self, filename: Path) -> list[Annotation]:
         """Extract annotations from pocketbook html file.
diff --git a/papis_extract/extractors/readera.py b/papis_extract/extractors/readera.py
index b6159ff..d992512 100644
--- a/papis_extract/extractors/readera.py
+++ b/papis_extract/extractors/readera.py
@@ -37,7 +37,7 @@ class ReadEraExtractor:
             return False
 
         logger.debug(
-            f"Found annotation file processable with ReadEraExtractor: {filename}"
+            f"Found processable annotation file: {filename}"
         )
         return True