Can I use my own WebP files with ShortPixel Image Optimizer?

Yes, with some caveats.

As you know, ShortPixel Image Optimizer can create WebP files  when your Media Library is being optimized. In addition, you can also deliver them to the compatible browsers: How to serve WebP files using SPIO.

If you have your own WebP files and would want ShortPixel to deliver them, you just need to:

  1. Enable one of ShortPixel's WebP delivery options (Settings > ShortPixel > Advanced > Next Generation Images > Deliver the next generation versions of the images in the front-end)
  2. Upload your WebP files in the same folder as your original images with the same name (but different extension). For example:

Note: If you don't have the original file (JPG, PNG or GIF), ShortPixel will ignore the WebP file you uploaded. In other words, you must have the original file if you want to take advantage of the delivery features by ShortPixel.
IMPORTANT: If you have activated the creation of WebP files (different than "delivery"), and you did not optimize your WebP files yet, when ShortPixel optimizes your files, it will see an existing .webp file and will therefore generate a .jpg.webp to not overwrite the one you already uploaded.
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