Understanding Squarespace Customizations Options

Hi, I'm currently considering Squarespace to host one of my clients sites but I'm wondering if Squarespace can be customized so, I have the following question.

First of all let me start by saying that I'm proficient in HTML and CSS and some JS.

1. Is it possible to upload a custom design and not use any of the templates offered by Squarespace?

2. My plan is to use a custom design for the main pages and incorporate some parts of Squarespace, is this possible?

3. One of the parts I would like to use from Squarespace is some sort of picture gallery page where the client can easily upload pictures, does Squarespace offer someway for customers to easily upload pictures from his/her phones?

4. Can an existing domain name be transferred?

5. Does Squarespace offers some sort of custom email services?

6. Does Squarespace offer some sort of contact form that can be easily integrated to a page?

Thank you very much in advance!

1. Squarespace templates aren't really templates, they're just pre-designed starting points, you can start with a "blank template".
2. What do you mean by custom design?
3. Yes, you can upload from your phone to the asset library if you want.
4. Yes, you can connect or host your domain with Squarespace.
5. Yes, they have integrated email marketing service, and use Google Workspace for an email address.
6. Yes, there are form blocks as well as newsletter blocks and commerce intake forms.

Thank you for the answers. What I mean with custom design is, if I can upload an existing design/website, basically move an existing website to Squarespace, is that possible?

17 minutes ago, fsdolphin said:

move an existing website to Squarespace, is that possible

No, Squarespace isn't a hosting platform for websites built elsewhere on wordpress or any other platform.

And just to be clear, I would just need to upload 2-3 existing HTML/CSS pages.

So no modification can be done offline using a third party code editor, all modifications must be done online, within Squarespace?

5 minutes ago, fsdolphin said:

And just to be clear, I would just need to upload 2-3 existing HTML/CSS pages.

So no modification can be done offline using a third party code editor, all modifications must be done online, within Squarespace?

No, Squarespace cannot upload even one existing HTML page, it is not built for that purpose. All building and editing needs to be done online on Squarespace.

Got it, now, what would be the limitations as far as making it custom, can you actually create pages by writing your own HTML/CSS/JS?

You can add code to blocks on a page (which can contain HTML/CSS/JS), but it's not a primary method for creating an entire page.

Makes sense. I guess I'll need to give it a try to see its limitations.  Now, what would be the right wat to open up accounts for clients, should they open their own account and then provide the login credentials to whoever needs to work on or can someone act as the administrator and open the account for them? Are there any admin tools?

Ideally, each user needs their own login and Squarespace account, a website that you create will be owned by you, but you can add others with varying levels of permissions, you can also transfer ownership of the website to another user that has permission on the website.

https://support.squarespace.com/hc/en-us/articles/206537297-Squarespace-permissions-explained

Perfect, thank you for the good information.

2 hours ago, fsdolphin said:

Perfect, thank you for the good information.

Glad I could help further your understanding here.