Image optimization darkens images

Hello
Please provide us the site link. Please do not retry running the optimization process until we do some debugging.

This is the site url: https://shorturl.at/pBCL9

I did not run the optimization again.

The ‘darkening’ issue affected only SOME images (not all). This image was affected: https://shorturl.at/uFLS0

Also, I noticed that both jpeg and webp and also thumbnails were affected.

Thank you. We will take a look over the issue and try to come back with a good answer for you ??

Hello,

Thank you for your reply!

I also noticed 2 other related issues:

1. Even though I did not erase the original images, some originals were replaced by darkened optimised images (and originals no longer exist).
   For example, this image should be an original but it was replaced with the darkened version: https://shorturl.at/mntwA
   The original would have looked like this (brighter): https://shorturl.at/tvxRW
2. The plugin generated thumbnails in other resolutions than the ones entered in Image Thumbnail Group Sizes ( https://ibb.co/nBxj3Wy ).
   For example this one (resolution 768×1097): https://shorturl.at/chDM3

• This reply was modified 7 months, 1 week ago by Egl.

Thank you for the new information.

I was forced to replace the affected images and start thumbnail regeneration. I hope you already got all the info you need.

• This reply was modified 7 months, 1 week ago by Egl.

We are sorry for your problems with image optimization.

I have made tests with the provided image with different settings.
It involves to start optimization from beginning, but first make these settings.
Admin link: /wp-admin/admin.php?page=litespeed-img_optm#settings
Most important are:
Remove Original backups -> Keep OFF allow you to restore the originals file
Optimize Losslessly ->keep it OFF. Still optimize the image but keep it to the best quality(see what Losslessly optimization does)
Image WebP Replacement -> set it to ON will replace automatically current image format to WEBP
WordPress Image Quality Control -> set it to 100 for better quality

Please keep me updated with the progress you did.

Thank you

• This reply was modified 7 months, 1 week ago by litetim. Reason: update details
• This reply was modified 7 months, 1 week ago by litetim. Reason: spelling
• This reply was modified 7 months, 1 week ago by litetim. Reason: thank you's

Thank you for your support! I will redo the optimization process

I restarted the optimization process and it seems to be finished.

I noticed in Media Library that for some images the optm button is inactive (https://ibb.co/Yh9Hvzw). For these images there in no webp image in file manager even though Media Library indicates the webp image exists and saved X%. The thumbnails of these images do have webp versions in file manager.

Could you please explain this behaviour? Thank you!

• This reply was modified 7 months, 1 week ago by Egl.

Also, I noticed that the “Preload featured image” is not visible under Media Settings even though I use LiteSpeed Cache v6.2. Can I make this setting visible?