Thanks a lot for your help.
> Probably the important part is what your T() is. > > T is the format of the source file. In the case of jpeg, it is gil::jpeg_tag > When calling write_view, you can specify a JPEG quality explicitly via > something like image_write_info<jpeg_tag>(95) -- use a lower number for > a smaller file size but more artifacting. > > If you don't specify it, GIL uses 100 by default (which might be > excessive). Other editors probably use different values by default, > which might be causing the file size increase you're seeing. > May i know what do you mean by "Other editors" ?
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