Uploading PDFs with Imagick extension enabled seems to rasterize and compress the PDFs Uploading PDFs to Craft3 with Imagick extension enabled seems to rasterize and compress the PDFs. 

Also, if I manually swap out the files after upload, it works fine until I have to edit something in an article with a pdf uploaded. Then the behavior is repeated when I press save. 

Any idea on where to disable this behavior?
Got the same problem with Craft3 (3.0.0-beta.19). Had to change the imageDriver to GD.

Add 'imageDriver' =&gt; 'gd', to config/general.php and replace/reupload the files in Craft.