I'd recommend using one of several mobile phone apps to sync your phone's camera/DCIM directory with a computer/NAS at home, so you have your originals.
I wouldn't recommend syncing from, say, your Google Photos library: even in "original quality," your files may be mucked with (it depends on your platform).
Once you've got them local, there are several apps to share photos via local webserver. I wrote PhotoStructure to deduplicate and manage my 500k+ photos and videos from the past 20+ years.
https://photostructure.com/faq/how-do-i-safely-store-files/#...
I wouldn't recommend syncing from, say, your Google Photos library: even in "original quality," your files may be mucked with (it depends on your platform).
Once you've got them local, there are several apps to share photos via local webserver. I wrote PhotoStructure to deduplicate and manage my 500k+ photos and videos from the past 20+ years.