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[–] • 1 pt

but I have a rule against posting any pic I took with a device linked to me.

FYI When you submit a pic within poal (create post page or pic8) it is converted into base64 and sent to pic8 API that strips off all exif data before submitting to multiple hosts. You can convert an image into jpg (medium quality) to break any chance for steganography based data to persist (remain unaltered), in case you believe images contain some.

[–] • 0 pt

The pixel noise, or fingerprint is apparently a fairly solid tracking method now, even without the blatant screaming “THIS BE ME RIGHT HERE!!!” Of exif. Is the code available for pic8 api for people to verify? Though if you were an evil person, you could write one coding to record all info and save to spook.gov/giantlistofdangerouspeople and then strip it and push the photo, while publishing code that omits that step…

I have known people that were that evil, and or deranged, hence the caution.

[–] • 2 pts

Besides the exif-data, Pic8 doesn't alter images. @picman can confirm.

Some of the image hosts might do (compress them to save/optimize space) and maybe even add data in them (that would only be related to pic8, since images are being uploaded by pic8 server). That's the reason I suggested you to compress them before uploading them online. You can even use a VM with a clean OS that has no internet connection to compress images or remove exif-data yourself.

Is the code available for pic8 api for people to verify?

Take a random phone pic online shared by some random people that contains exif data (especially long/lat data) and upload it with pic8. Then download it from the resulting short link and compare it with the original.