There is a similar request "Show GoodNotes Documents in a folder in the new iOS 11 Files App"
https://feedback.goodnotes.com/forums/191274-customer-suggestions-for-goodnotes/suggestions/31528321-show-goodnotes-documents-in-a-folder-in-the-new-io

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Dropbox automatic backup is already an option. Settings > Automatic backup > Cloud storage > Dropbox > done. Next: Settings > Automatic backup > Sign in. Lastly, edit what you want to back up, where, and the name

I’ve loved GoodNotes, but am going to have to switch because I cannot connect to third party storage. I need to access pdf files from a server, like DropBox. I need to make notes that I can access from other apps. Specifically, I have a collection of journal articles that I need to annotate and read from multiple apps. Please add this functionality and I will come back

Please implement this, it has also been suggested in other threads (https://feedback.goodnotes.com/forums/191274-customer-suggestions-for-goodnotes/suggestions/16780321-full-synch-with-icloud-or-dropbox)

GoodNotes is awesome but nowadays I use Adobe Acrobat Reader only because I have Dropbox account and I need to share my annotations to another devices and persons.

I realy don't knows why too simple funcionality is not present in a powerful app how GoodNotes.

Is it a functionality to GoodNotes 6 ?

Please make Dropbox Sync possible. We are going to implement Goodnotes in our company as a creative and collaboration tool, but when working with Apple managed IDs for business the iCloud storage space is limited to 5GB and can't be extended in this case, which is a joke.
We already pay for a massive amount of Dropbox storage space so why not allowing a Dropbox workflow. Would be even consequent to have the ability to open files saved on custom locations like dropbox directly without importing/exporting the file. Because when using iCloud we don't have direct access to the data stored on the iCloud. Having control over our data and storing our files natively in our dropbox folders is crucial for professional use.

Goodnotes Team - Why has this still not been done? Syncing to Dropbox should not be hard and the choice of where a user stores his/her data is personal and becoming more and more important to businesses such as yours. Our choices should be respected. Users are asking for it. Why aren't you delivering?

I'm already paying for masses of space with DropBox, I don't see why I should have to pay/start ANOTHER storage subscription with iCloud, just because you choose not to be compatible. Agree with others here, you need to make it explicit pre-sales. It wasn't until I had installed across iOS and OSX (both purchases) that I realised a THIRD purchase was necessary; an ongoing iCloud subscription. REALLY great app, this is the only but major disappointment.

I bought GN5 but I cannot sync it with Dropbox
Wish I had known this before I bought it
I’ll have to find another app

I refuse to switch to GN5 without the Dropbox backup of GN4. With iPadOS, I can’t do split screen with GN4 and I doubt the team is going to update it to provide that support. So, if the team is going to continue leaving this feature on the back burner after releasing an incomplete “upgrade” and GN4 can’t utilize new features of iPadOS, I’ll just have to switch to Notability. iCloud is trash and not at all adequate for people working with multiples devices or operating systems.

No prob. Add it and I will pay for it as I can not use iCloud sync

I might have to leave as well if No Dropbox sync because I am using 2 iPad n iphone

I've been waiting for GoodNotes 5, thinking it would finally offer Dropbox Sync. GoodNotes functions well, but I'm leaving it as I cannot continue to use iCloud.

Too bad.

No sync to Dropbox with Good Notes 5? That’s a dealbreaker.

I can't acces my files from icloud. Backup data won't work either in pdf nor in goodnotes format. Really disturbing.

Dropbox is essential. Otherwise I have to stay in GoodNote4.

Please!
Lack of Dropbox sync function is the only reason I use PDF Expert to read/annotate PDFs.

I will not buy goodnotes 5 because it doest include the sync woth dropbox

iCloud is not loading my files. I get the forever spinning thing. I am so fed up with iCloud problems. I want to use my Dropbox but cannot sync between my MacBook and my iPad now. PLEASE, this has been asked for years now - please add this.