I've never heard of Timeliner. It doesn't have good Google ranking, so it was a bit buried. I think this is it:

https://github.com/mholt/timeliner

  Timeliner is a personal data aggregation utility. 
  It collects all your digital things from pretty much 
  anywhere and stores them on your own computer, indexes
  them, and projects them onto a single, unified timeline.

  Supported data sources
  * Google Location History
  * Google Photos

It does. I just used it to reupload my pics to Amazon last week.

However, it has tons of metadata files, empty folders, etc. I highly suggest unticking 'preserve directory structure' when unpacking.

Did you use a specific guide? I’d like to try again and follow the exact same steps as you.

actually yeah, I didn't know takeout was a thing initially. Here is the site I found that sent me there - https://www.groovypost.com/howto/migrate-google-photos-amazo...

Now, when I was just browsing the zips, it was folder after folder of junk I didn't even recognize, I guess metadata files of some sort. Rather than do all that, at least in Gnome, when I unzip it has an option of 'preserve directory structure' that I unchecked, which basically gets rid of all the folders. From there I was easily able to mass remove all the json and other non-photo files, leaving only the photos behind. Good luck.

Did you try again? Takeout is pretty flaky sometimes... especially with large libraries.

Yeah the files were like html files that had image links inside them if I remember correctly. But even those links didn’t work right.

This is because of a change they made.

I was absolutely distraught tbh. The feeling of being at the mercy of google is a horrible feeling. Especially when there is zero support or assistance.

I just did a take-out today based on your comment here.

I received links to over 100 tgz files (4GB each), and checked a couple. Each had JPG files and JSON files with extra metadata ("geoDataExif", "geoData" (inferred from my location history?), "title", "description", etc).

I can't tell if the actual images are the originals I uploaded, but I can confirm the images were archived as actual images, and in a serviceable format/structure.