That is very likely not an error from this plugin. EWWW IO does not remove images by default (unless you’ve turned on conversion options and told it to delete the originals). This plugin cannot cause 403 errors, that is a problem with something else: another plugin, something in your .htaccess file, or some crazy apache config…
Something similar happened to me. I updated to version 1.8.4 and more of 50% image links broke. Pictures are still in the Media library (I can edit them and see them inside the editor) but links are broken.
The speed of the website loading since the update has decreased dramatically! Images load very slowly…
Any hint to solve that or recover the older version of the plugin?
no, that does not help, as ‘-‘ is what wordpress substitutes by default for all files that have spaces in their names, so it is pretty common. Were you on 1.7.6? Do you remember when was the last time you updated the plugin (prior to the 1.8.4 update)?
One last question, are you using the WP Retina plugin?
That is quite strange, the plugin should only be getting quicker with newer releases. I’ve made quite an effort to ensure that it isn’t loading anything unnecessary.
However, if there is another plugin on your site that is rendering images on demand, and not caching them, this could cause a slow-down, as the page will have to wait for those rendered images to be optimized.
How much of a slowdown are you seeing?
What do you mean by a plugin “rendering images on demand”? Sorry I am not an expert in these fields :-).
I am using SEO friendly images which “Automatically adds alt and title attributes to all your images. Improves traffic from search results and makes them W3C/xHTML valid as well”. I don’t know if that could interfere.
Yeah, that is exactly what I was talking about, although just thinking about it, it doesn’t seem like it is EWWW IO causing the problems, but I can certainly take a look and see if I can replicate the behavior. Is the name of the plugin just SEO Friendly Images?