For csv files mimetypes.guess_type is returning "application/vnd.ms-excel" on windows causing an invalid mime type in plaintextconverter. In reference to issue: #150 (#273)

wunde005 · web-flow · commit 73ba69d8cd44 · 2025-02-08T20:58:13.000-08:00
diff --git a/src/markitdown/_markitdown.py b/src/markitdown/_markitdown.py
@@ -46,6 +46,9 @@
 # This constant is a temporary fix until the bug is resolved.
 CONTENT_FORMAT = "markdown"
 
+# Override mimetype for csv to fix issue on windows
+mimetypes.add_type("text/csv", ".csv")
+
 # Optional Transcription support
 IS_AUDIO_TRANSCRIPTION_CAPABLE = False
 try:
