If this is a registered site others for other to replicate the issue will be hard for anyone to know what is going on. And without URL sites no one is going to know where or what site this or what is happening.

You response not only does not solve my problem, it doesn't even address my problem and the response just doesn't make since to me.

Hi Ralph, just to clarify, is it slow for Firefox to display the image in a tab in Firefox, or slow for Firefox to save the file to disk and send to an external image editor?

If applicable:

For images you are viewing in Firefox, do you notice a lot of disk activity, possibly related to cached files or high memory use? Disk I/O generally is the slow spot when you have good internet service.

If applicable:

For files you are either saving to disk or automatically opening in an external application, are any other types of downloads or sites similarly affected, or only images? Where does Firefox save your images (for example, your Downloads folder, the Windows Temp folder, etc.)?

General Suggestion

When you have a problem with one particular site, a good "first thing to try" is clearing your Firefox cache and deleting your saved cookies for the site.

(1) Clear Firefox's Cache

See: How to clear the Firefox cache (only select Cached web content, don't clear all cookies and site data)

If you have a large hard drive, this might take a few minutes.

(2) Remove the site's cookies (save any pending work first because this will log you out). While viewing a page on the site, click the lock icon at the left end of the address bar. After a moment, a "Clear Cookies and Site Data" button should appear at the bottom. Go ahead and click that. Firefox will ask you to confirm; go ahead and confirm.

Then try reloading the page and test again. Does that help?

I am using proprietary company software where we have to download large photo files. I have never had a problem before with these downloads, but recently (last week or so) when downloading large high resolution photo files, they either load very slowly or just load a couple then just spins. I am verifying claims for an Insurance company. I have noticed the Adjusters that use low resolution setting for their photos, these load immediately. I can use TOR as a browser on the same file that is slow to load or will not load and the file downloads immediately. Has some thing change in the last week or so with Firefox. I want to continue to use Firefox, but it is hindering my work output. One other note - I have noticed if I back out of the file completely, then reopen it, then it seems to load OK. Might be cached and when I re-open it loads. Internet speed 300 + with no other application running. Year old HP computer, which is fast. Thanks for the help.

You can use mozregression to find exactly when it stopped working which will greatly help identify the problem.

I am to old to understand how that works. I will just like with the problem or if it persists for a longer period of time I will switch browsers. Thanks for trying.

I can't think of any major image-related features that changed in Firefox recently. However, each major release has many hundreds of small bug fixes, so one of those could have had an unintended consequence. If only one site is affected, that makes it hard to debug.

If you get around to trying the cache/cookies cleaning, let me know whether that makes any difference.

Does it still happen in Troubleshoot Mode?