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Retroactive global change of image sizes in posts.

  1. I would like to limit the height of all my images within new and old blog posts. towards that end I changed the height limit in Dashboard>Settings >Media to 800 pixels. It did not seem to change the appearance in my browser of an older post. Is this possible to do retroactively with older posts that have larger than image sizes than that? Or do i have to go back manually?

    I did delete cookies and cache, signed out and in to make sure.

    Theme is Sundance and blog is and it is absolutely a wordpress.


    The blog I need help with is

  2. The blog you specified at does not appear to be hosted at

    This support forum is for blogs hosted at If your question is about a self-hosted WordPress blog then you'll find help at the forums.

    If you don't understand the difference between and, you may find this information helpful.

    If you forgot to include a link to your blog, you can reply and include it below. It'll help people to answer your question.

    This is an automated message.

  3. It is a blog, definitely.

    Now I went back and changed one of my posts manually to a smaller size. After logging in and out, deleting cookies, there was no visual change on the website.
    Do I fundamentally not understand how this works - if i physically reduce the size of an image by 25% it should appear smaller?
    The change was from 1100 pixels high to 800 pixels high. I'm using firefox.

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