Hi @drivendevelopment
Thanks for jumping in to help, Luke!
As Luke said, it is possible to exclude PDF files from auto-optimization by installing and activating our Skip PDF Auto-Optimization helper plugin.
However, there is currently no way to exclude PDF files in your Media Library from bulk optimization, as this helper plugin will not prevent the Bulk Optimizer from optimizing your PDF files.
One potential workaround would be to use an FTP program to upload your PDF files to a custom folder other than your WordPress Media Library (like /wp-content/uploads/pdf/ for example). If your PDFs are located outside your Media Library, then they won’t be optimized by the Bulk Optimizer.
I realize this may not be an optimal solution, but it’s unfortunately the only option I can suggest at the moment.
We do have an issue created on Imagify’s GitHub to add functionality to allow users to exclude specific file types from bulk optimization. While I cannot offer a specific timeframe for when this functionality may be added, you can track the progress here if you’d like: https://github.com/wp-media/imagify-plugin/issues/516
?Let me know if you need any further assistance, I am happy to help.
Best Regards
Marko