Claude Chat vs Cowork vs Code: Which One Should Squarespace Designers Use?

The simplest way to understand Claude's three tools and when each one earns its place in your workflow.

Claude isn't one tool. It's three. And most Squarespace designers only ever use one of them.

They sign up, open a chat window, type a question, and think that's the whole thing. That's like buying Squarespace and only ever using the blog section. You're leaving two entire tools on the table.

The problem is that nobody explains the difference clearly. Chat, Cowork, and Code sit behind different interfaces, different apps, and totally different mental models. So you end up using the brain to do the hands' job, or ignoring the builder entirely because it sounds like it's only for developers.

Here's the simplest framework I've found for making sense of it.

Chat is the Brain. Cowork is the Hands. Code is the Builder.

That's it. Everything below is just unpacking what those three words mean when you're building Squarespace sites for clients.

The Brain: Claude Chat

Chat is where you think out loud. You describe a problem, paste some code, upload a screenshot, and Claude thinks through it with you. It reasons. It writes. It explains.

But here's the thing most people don't realise at first: it can't touch anything.

Chat is pure thinking. It can't open a file on your computer. It can't peek at your Google Drive. It can't log into Squarespace and look at your live site. Everything it knows comes from what you type or paste into that conversation window. That's it.

Think of it like phoning the smartest Squarespace developer you know. They'll give you brilliant advice. They'll spot the bug in your CSS in seconds. They'll rewrite your client's homepage copy and make it sing. But they're on the phone. They can't reach through the screen and actually do the work. You carry everything to them, then go and apply it yourself.

What Chat is good at

Writing and debugging Custom CSS. Explaining code you didn't write. Rewriting client copy that reads like it was written by a committee. Planning site structures and information architecture. Generating code injection snippets. Answering "how do I do this in Squarespace 7.1?" at 11pm when you can't ask anyone else. Brainstorming layout ideas. Proofreading before you hit publish.

Basically anything where the value is in the thinking, not the doing.

Where Chat runs out of road

It can't read files on your computer. If you've got a folder of client content documents, you're copy-pasting or uploading them one at a time. It can't check what's actually on your live site. It can't crunch through a 200-row spreadsheet of blog posts that need migrating. And it forgets everything between conversations unless you use Projects.

Chat is powerful, but it's limited to what fits inside the conversation window. For quick Squarespace questions, that's more than enough. But the moment your work involves actual files, spreadsheets, or anything outside that window, you start to feel it.

That's when things get interesting.

The Hands: Claude Cowork

Cowork is what happens when you give the Brain hands.

It runs on the Claude Desktop app and it can reach into your actual files. Not uploads. Not copy-paste. It opens your folders, reads your documents, creates new files, and saves them right where you need them. It connects to Gmail, Google Drive, and Microsoft 365 too.

Same brain as Chat. But now it can touch things.

If Chat is the expert on the phone, Cowork is that same expert pulling up a chair next to you. They can see your screen. They can open the client's content folder and start reading through it. They can pull up last week's email thread to check what the client actually asked for. They can draft the handover doc and drop it straight into your project folder.

What Cowork does that Chat can't

I'll be honest. The first time I pointed Cowork at a folder of client Word documents and watched it pull out all the page copy, organise it by section, and flag the missing meta descriptions, I sat there thinking "why have I been doing this by hand?"

It reads entire folders of content docs and turns them into structured briefs. It processes Screaming Frog CSV exports and maps old URLs to new Squarespace pages for 301 redirects. It drafts handover guides and saves them as formatted Word docs. It reads your Gmail and summarises client email threads. It opens spreadsheets and prepares blog content for migration. It builds PDF proposals from your project notes.

All from the files already sitting on your machine.

Where Cowork hits a wall

It's desktop only. No phone, no browser. Works locally on your machine with no cloud sync between devices. It starts fresh every session too, so it doesn't remember yesterday's work unless you've set up a recurring task. And it can't build software. It's brilliant with files and documents, but if you need a custom tool or an app or something that runs on its own, that's not what the Hands are for.

For that, you need something else.

The Builder: Claude Code

Code is the one that actually constructs things.

Claude Code runs in the terminal on your computer. And it doesn't just write code and hand it to you. It writes the code, runs it, hits an error, fixes the error, runs it again, and keeps going until the thing works. You describe what you want. It builds it.

If Chat is the expert on the phone and Cowork is the expert at your desk, Code is a developer you've hired who disappears into a back room, builds the thing from scratch, tests it properly, and comes back with something that works. You don't hold their hand through it. You tell them what done looks like and they work it out.

I know what you're thinking. "I'm a designer, not a developer. This isn't for me."

I thought that too. Then I used it to build a Chrome extension that backs up Squarespace Custom CSS to Google Drive with version history. I described what I wanted in plain English. Code built it. I didn't write a single line myself.

What Code can do for a Squarespace designer

Build a custom tool you need for your workflow. A bulk blog uploader. A code backup system. A client intake form that saves responses to a spreadsheet. A Chrome extension that does one specific thing you've always wished existed.

You don't need to know how to code. You need to know what the tool should do. That's a very different skill, and it's one designers already have.

Code also handles complex work that goes beyond what Squarespace's built-in features allow. Custom API integrations, data processing scripts, one-off automation tools that save you hours on repetitive tasks.

Where Code gets tricky

It runs in the terminal. If you've never opened one before, there's a learning curve. It's not as friendly as Chat or Cowork. For most everyday Squarespace design work, you genuinely don't need it. But when you hit something that can't be solved inside Squarespace's interface, or you catch yourself wishing a tool existed that doesn't, that's the Builder's moment.

Same AI, different reach

Here's what ties it all together: all three tools use the exact same Claude AI. The intelligence behind Chat is the same intelligence behind Cowork and Code. Nothing changes about how smart it is.

What changes is what it can get to.

Chat reaches what you paste into the conversation. Cowork reaches your files, your email, your Drive. Code reaches your entire development environment and builds new things from scratch.

Same brain. Wider reach. That's the whole model.

Five real scenarios to show the difference

These are all situations you'll recognise from actual Squarespace projects.

A client sends you 15 pages of content in Word docs

Chat: You copy-paste each page in one at a time. It works. It's also slow, manual, and honestly a bit tedious.

Cowork: You point it at the folder. It reads every document, pulls out the copy, organises by page, flags what's missing, and saves a structured brief into your project folder. You made a cup of tea while it worked.

Code: You build a content processing script that does this automatically for every project going forward. You never organise client content by hand again.

You need to migrate 80 blog posts from WordPress to Squarespace

Chat: It gives you a solid step-by-step migration plan. You do the actual work yourself.

Cowork: You hand it the WordPress XML export. It processes the posts, cleans up formatting, and prepares them for upload

Code: You build a migration tool that handles the whole thing. Then use it again next time a client moves from WordPress.

You want to audit your CSS before launch

Chat: You paste the Custom CSS in and ask for a review. It gives you a detailed critique.

Cowork: It reads the CSS from your project folder, cross-references with your site structure docs, and creates a formatted audit report.

Code: You build a CSS audit tool that checks for specificity issues, unused selectors, missing breakpoints, and accessibility problems. Run it against any project.

You need a handover guide for a non-technical client

Chat: You describe the client and their site, Claude writes the guide, you copy it into a document and format it yourself.

Cowork: It reads your project files, drafts a handover guide tailored to that specific client, and saves it as a Word doc and PDF in your folder.

Code: You build a handover generator that takes a project summary and outputs a branded, client-ready PDF with step-by-step instructions. Use it on every project.

You want something that backs up your Custom CSS automatically

Chat: It explains manual backup methods and suggests tools to try.

Cowork: It could save a copy if you paste the CSS in, but it can't connect to Squarespace directly.

Code: You build a Chrome extension that backs up Custom CSS and Code Injection to Google Drive with version history. It runs every day without you thinking about it.

Which Claude tool should you start with?

If you're not using Claude at all yet, start with Chat. It'll change how you write CSS, debug code, draft client emails, and plan site structures. Nothing to set up. Just open it and go.

When you notice you're spending more time wrangling files and formatting documents than actually designing, add Cowork. It's the obvious next step once you're comfortable with Chat.

When you hit a problem that can't be solved with a conversation or a document, and you find yourself thinking "I wish there was a tool that did this," that's when Code makes sense. You don't need to learn to code. You need to be able to describe what the tool should do.

Most Squarespace designers will spend their time in Chat and Cowork. Code is there when you're ready.

No rush. Just know it exists.

Now you know the tools. Here's how to talk to them.

Understanding Chat, Cowork, and Code is half of it. The other half is knowing what to say once you're in there. I wrote a companion guide covering the 22 prompts that actually change how you use Claude as a Squarespace designer. It's grouped by situation: building, debugging, pre-launch reviews, scoping projects. Worth a look if you want to get more out of whichever tool you start with.