I have 70k images in 2k directories on my Ubuntu PC. 

I want to upload them to google photo to the unlimited store (called "high quality" with reduced size).

[This solution](https://askubuntu.com/questions/602555/alternative-for-google-auto-backup-of-image-how-would-i-automate-resize-and/644873#644873) looks too complicated to me.

Is there no simple way to get this done?

My images are stored in this structure:

```
Images/YYYY/MM/DD-a
Images/YYYY/MM/DD-b

```

Example:

```
Images/2001/01/01-a-new-year-fireworks
Images/2001/01/01-b-skiing-with-friends
...
Images/2015/09/30

```

PS: I know how to upload all files of a directory by hand (using the web GUI of google photos). But this does not work recursively. This means uploading by hand is not a solution for 70k photos. 

PS2: I don't want to lose my directories. Putting all images of one day into on album would mean a massive loss of information for me. Look at the above example. There are two folders for the first of January. Both contain unrelated images.