I'm baffled. I do 99.9% of my photo work in Lightroom and then export to jpg. On the rare occasion when I need to remove something from a photo (a fly or leash), I have been using PSP version 9 because I already have it.
However, this morning I opened an 8 Mb jpgs file, did my editing and just saved it (no save as or resizing), and now the file is only 2 Mb.
What are the dimensions of your image? pixels? are they the same.
If so sounds like you may have the compression set too low.
Do a Save As and in the dialog box that appears go to Options and check the position of the Compression Factor slider. Position 1-3 give highest quality and approx same size (Mb) as original. Web and emails about 10 -30 depending on the subject material but will reduce size considerably.
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