Compression algorithms, archival
My strategy for photos is to place them in my Dropbox folder, and sync them to one box in particular but they also live on the Dropbox cloud (it also used to be that they end up on Flickr as they sometimes still do; Google Photos does backup in regular resolution stuff from my iPhone). All this gets backed up via various backup services (Backblaze, CrashPlan).
Lately, I’ve been wondering if that makes sense since Dropbox applies compression to my JPGs. I missed the announcement of Dropbox using Lepton image compression, but did read with great interest that Flickr is using it too – A Year Without a Byte.
Lepton “provides lossless, bit-exact storage for any type of photo, whether it be for archival purposes, or for serving live.” It is open source.
I understand it saves Dropbox countless petabytes. I just don’t like the idea that my images are being re-compressed without me knowing about it. It may be that other services do this too. But one thing is for sure – the moment its in my Dropbox folder, they reduce in size, and my backups are also getting said reduction. Sure it’s lossless, bit-exact storage. But I’m thinking about archival forever!
P/S: I’m going to guess this is why Dropbox doesn’t support Live Photos in Camera Uploads yet. They haven’t figured out how to save space…