diff --git a/data/magic-new-planeswalker.mse-style/border_mask.PNG b/data/magic-new-planeswalker.mse-style/border_mask.png
similarity index 100%
rename from data/magic-new-planeswalker.mse-style/border_mask.PNG
rename to data/magic-new-planeswalker.mse-style/border_mask.png
diff --git a/data/magic-new.mse-style/imagemask_standard.PNG b/data/magic-new.mse-style/imagemask_standard.png
similarity index 100%
rename from data/magic-new.mse-style/imagemask_standard.PNG
rename to data/magic-new.mse-style/imagemask_standard.png
diff --git a/data/magic-old-split.mse-style/ulcard.JPG b/data/magic-old-split.mse-style/ulcard.jpg
similarity index 100%
rename from data/magic-old-split.mse-style/ulcard.JPG
rename to data/magic-old-split.mse-style/ulcard.jpg
diff --git a/data/magic-old-split.mse-style/wcard.JPG b/data/magic-old-split.mse-style/wcard.jpg
similarity index 100%
rename from data/magic-old-split.mse-style/wcard.JPG
rename to data/magic-old-split.mse-style/wcard.jpg
diff --git a/data/magic-old-split.mse-style/wlcard.JPG b/data/magic-old-split.mse-style/wlcard.jpg
similarity index 100%
rename from data/magic-old-split.mse-style/wlcard.JPG
rename to data/magic-old-split.mse-style/wlcard.jpg
diff --git a/data/magic-planeshifted.mse-style/imagemask_standard.PNG b/data/magic-planeshifted.mse-style/imagemask_standard.png
similarity index 100%
rename from data/magic-planeshifted.mse-style/imagemask_standard.PNG
rename to data/magic-planeshifted.mse-style/imagemask_standard.png
diff --git a/data/vs-alter.mse-style/card-sample.PNG b/data/vs-alter.mse-style/card-sample.png
similarity index 100%
rename from data/vs-alter.mse-style/card-sample.PNG
rename to data/vs-alter.mse-style/card-sample.png