Problems with webp Support

[pepebe]

Overview:

Support of webp output seems to be broken:

• Resizer doesn't work at all (see: Can't create webp images with Resizer #64)
• Webp thumbs are much bigger then the original jpg.
• Also the webp format seems to be fake and the images is still a jpg on the inside.

Example: Webp / Jpeg Thumbs created by pthumb (same source image):

• The webp image blows up from 72 to 202kB.
• Even though both images have differnt extensions (jpg, webP), both have the same file type (JPEG-Bild = jpeg image)

This is how a "real" webp image properties look like in gimp:

I am aware that the image shows the format as webP. Changing it to webp doesn't change the result.

I have found a forum thread that support my findings:
https://community.modx.com/t/pthumbtransparent-webp-images/1999/18

Environment:

• modxcloud
• modx 2.7.3
• pthumb 2.3.3
• contentblocks 1.8.15
• resizer 1.0.2-beta

[sepiariver]

Related to #64 (comment)

Unsupported formats are handled in unpredictable ways in the current implementation.

[rthrash]

This issue has been mentioned on MODX Community. There might be relevant details there:

https://community.modx.com/t/modx3-compatibility-of-popular-extras-bug-hunt-edition/3738/16