Compress test images more heavily

tests/resources/README.rst

@@ -9,7 +9,7 @@ Files derived from free sources
 These test resources come from free sources, under either public domain or Creative Commons licenses.
 In some cases they were converted from one image format to another without other changes.
 
-.. list-table:: 
+.. list-table::
     :widths: 20 50 30
     :header-rows: 1
 
@@ -28,7 +28,7 @@ In some cases they were converted from one image format to another without other
     *   - lichtenstein.pdf
         - `Wikimedia: JPEG2000 Lichtenstein`_
         - Creative Commons BY-SA 3.0
-    *   - LinnSequencer.jpg, linn.pdf, linn.txt
+    *   - linn.png, linn.pdf, linn.txt
         - `Wikimedia: LinnSequencer`_
         - Creative Commons BY-SA 3.0
     *   - typewriter.png, 2400dpi.pdf
@@ -45,7 +45,7 @@ Files generated for this project
 The following test resources were crafted specifically for this project, and are
 licensed under the specified license.
 
-.. list-table:: 
+.. list-table::
     :widths: 20 40 15 15 10
     :header-rows: 1
 
@@ -68,12 +68,12 @@ licensed under the specified license.
         - a CMYK image created in Photoshop
         - @jbarlow83
         - @jbarlow83
-        - CC-BY-SA 4.0        
+        - CC-BY-SA 4.0
     *   - crom.png
         - test for non-dictionary words
         - @jbarlow83
         - @jbarlow83
-        - CC-BY-SA 4.0        
+        - CC-BY-SA 4.0
     *   - enormous.pdf
         - very large PDF page
         - @jbarlow83
@@ -90,12 +90,12 @@ licensed under the specified license.
         - @jbarlow83
         - CC-BY-SA 4.0
     *   - francais.pdf
-        - a page containing French accents (diacritics)  
+        - a page containing French accents (diacritics)
         - @jbarlow83
         - @jbarlow83
         - CC-BY-SA 4.0
     *   - hugemono.pdf
-        - large monochrome 35000x35000 image in JBIG2 encoding 
+        - large monochrome 35000x35000 image in JBIG2 encoding
         - @jbarlow83
         - @jbarlow83
         - CC-BY-SA 4.0
@@ -110,9 +110,9 @@ licensed under the specified license.
         - Wikipedia authors
         - CC-BY-SA 3.0
     *   - missing_docinfo.pdf
+        - PDF file with no /DocumentInfo section
         - @jbarlow83
         - @jbarlow83
-        - PDF file with no /DocumentInfo section 
         - CC-BY-SA 4.0
     *   - overlay.pdf
         - PDF file generated by PDFPen pro that triggered content stream parse errors
@@ -148,17 +148,17 @@ These test resources are assemblies or derivatives from other previously mention
 
 - baiona_gray.png (from baiona.png)
 - baiona_colormapped.png (from baiona.png)
-- cardinal.pdf (four cardinal directions, baked-in rotated copies of LinnSequencer.jpg)
-- ccitt.pdf (LinnSequencer.jpg, converted to CCITT encoding)
+- cardinal.pdf (four cardinal directions, baked-in rotated copies of linn.png)
+- ccitt.pdf (linn.png, converted to CCITT encoding)
 - encrypted_algo4.pdf (congress.jpg, encrypted with algorithm 4 - not supported by PyPDF2)
 - graph_ocred.pdf (from graph.pdf)
 - jbig2.pdf (congress.jpg, converted to JBIG2 encoding)
 - multipage.pdf (from several other files)
 - palette.pdf (congress.jpg, converted to a 256-color palette)
-- poster.pdf (from LinnSequencer.jpg)
-- rotated_skew.pdf (a /Rotate'd and skewed document from LinnSequencer.jpg)
+- poster.pdf (from linn.png)
+- rotated_skew.pdf (a /Rotate'd and skewed document from linn.png)
 - skew-encrypted.pdf (skew.pdf with encryption - access supported by PyPDF2, password is "password")
-- skew.pdf (from LinnSequencer.jpg, skew simulated by adjusting the transformation matrix)
+- skew.pdf (from linn.png, skew simulated by adjusting the transformation matrix)
 - toc.pdf (from formxobject.pdf, trivial.pdf)
 
 
@@ -172,8 +172,8 @@ These test resources are assemblies or derivatives from other previously mention
 
 .. _`Wikimedia: JPEG2000 Lichtenstein`: https://en.wikipedia.org/wiki/JPEG_2000#/media/File:Jpeg2000_2-level_wavelet_transform-lichtenstein.png
 
-.. _`Linux (Wikipedia Article)`: https://de.wikipedia.org/wiki/Linux 
+.. _`Linux (Wikipedia Article)`: https://de.wikipedia.org/wiki/Linux
 
 .. _`Wikimedia: Triumph typewrtier text Linzensoep`: https://commons.wikimedia.org/wiki/File:Triumph.typewriter_text_Linzensoep.gif
 
-.. _`Wikimedia: Baionako udalerri mugakideak`: https://commons.wikimedia.org/wiki/File:Baionako_udalerri_mugakideak.png
+.. _`Wikimedia: Baionako udalerri mugakideak`: https://commons.wikimedia.org/wiki/File:Baionako_udalerri_mugakideak.png

tests/test_main.py

@@ -448,7 +448,7 @@ def test_convert_to_square_resolution(renderer, spoof_tesseract_cache,
 
 def test_image_to_pdf(spoof_tesseract_noop, resources, outpdf):
     check_ocrmypdf(
-        resources / 'LinnSequencer.jpg', outpdf, '--image-dpi', '200',
+        resources / 'crom.png', outpdf, '--image-dpi', '200',
         env=spoof_tesseract_noop)