Aside:
@Steve "...
hosting unnecessarily large images has a significant effect at this end. Keeping the total storage consumed by the forums under control allows for much faster backups, much smaller incremental backups, faster startup, more efficient resource caching ... and on and on ..."
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Many sites 'adjust' uploaded images to 'fit' their preferred dimensions, color depth, and compression scheme. Would it be possible to add such a shrinker / reformatter to the GRC forums so folks could just drag-and-drop-in what they have and - poof - it becomes no more than your target goals?
@Jan J's pic IMG_0397.png from
https://forums.grc.com/threads/unable-to-access-shieldsup-port-scanner.1875/post-14929 seems to be 296 x 640 pixels x 3,247 colors, storage size 77.1 KB ( 78,992 bytes ), display size 555.04 KB ( 568,360 Bytes ).
Free IrfanView can drop it to 16 colors ( 4 BitsPerPixel ) and at 6-compression PNG it becomes 'only' storage size 16.56 KB ( 16,955 Bytes ), display size down nicely to 92.60 KB ( 94,824 Bytes ), increasing Internet throughput for GRC Forum users, and reducing backup time and space - but require a Windows computer, IrfanView does not work a phone.
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Your text reply, though comparatively lengthy, appears to be only 4.00 KB ( 4,096 bytes ) for approximately 389 words, 2,522 characters, at that rate, making the size of 1,000 words - the proverbial "a picture is worth" - to be approximately 10 KB ( 10,529 bytes ) at most.
Perhaps they tried to upload additional images from a full-size PC display screen, hit the GRC Forum's 512 KB size block message "...
Oops! We ran into some problems ...", and then they responded, thinking that they were "...
Locked from posting pics? ..." - no, just limited to 512 KB without being told why.
We can always add links to larger images that we upload elsewhere, the GRC Forums even provide a convenient menu control to upload an image here or reference a link to an image we've uploaded and hosted elsewhere:
That's a crop of a screen grab that I dropped to 16-color PNG 368 x 218 pixels, but it's still 39.27 KB ( 40,216 Bytes ), making even that 'little' picture 'worth' or equal, storage-wise, to approximately 4,000 words of text.
I am reminded of the many
@Steve Gibson GRC programs that are tiny, some as small as 1 KB, and the slogan Small Is Beautiful
https://www.grc.com/smgassembly.htm
Yet, so much of what we discuss in the Forums - and Newsgrous - is our on-screen information using GRC programs, where sharing images brings terrific and quick clarity.
So, is there a way to meet up both worlds,
Small Is Beautiful, and
A Picture is Worth A Thousand Words - with some sort of image auto shrinker reformatter?
At least provide some on-screen guidance, by adding a message to the picture inserter:
512 KB max, cropped to the essentials,
16-color or even grayscale PNG preferred