From 2a52c6dec2ea58a7ba0a108b5dd60b14691c8d7b Mon Sep 17 00:00:00 2001
From: "James R. Barlow" <james@purplerock.ca>
Date: Sun, 14 Feb 2021 01:35:33 -0800
Subject: [PATCH] optimize: skip images with unusually small dimensions

They're unlikely to be handled well by our recompressors. It seems
that JBIG2 cannot handle very small widths.

Fixes #732
---
 src/ocrmypdf/optimize.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/ocrmypdf/optimize.py b/src/ocrmypdf/optimize.py
index 3fa92355..05057d5c 100644
--- a/src/ocrmypdf/optimize.py
+++ b/src/ocrmypdf/optimize.py
@@ -76,6 +76,9 @@ def extract_image_filter(
     if image.Length < 100:
         log.debug(f"Skipping small image, xref {xref}")
         return None
+    if image.Width < 8 or image.Height < 8:  # Issue 732
+        log.debug(f"Skipping oddly sized image, xref {xref}")
+        return None
 
     pim = PdfImage(image)