How to generate unique URLs in Bubble

The simplest and most reliable way to generate unique URLs in Bubble is to create a unique text field on a Thing (for example “slug” or “unique\_id”), fill it once when the Thing is created (using Bubble’s built‑in Calculate formula → Generate random string), and then build the URL using that field inside your page’s Type of content and “Send data to page”. Bubble automatically appends ?slug=... or a readable path if you use the built‑in Slug feature.

Best way: use Bubble’s built‑in “Slug” field

Every data type in Bubble has a special field called Slug. A slug becomes part of the URL like /page/my-product-abc123. You set it once when the Thing is created. It’s readable, unique, and Bubble enforces uniqueness.

• Create your data type (for example “Post”).
• When you create a Post, add a step Make changes to Post → Slug = Generate random string.
• Set your page’s Type of content = Post.
• Navigate to page → Data to send = This Post. Bubble builds the URL with the slug automatically.

Alternative: use your own “unique\_token” field

Sometimes you need a non-readable unique URL (e.g., private share links). In that case create your own field, for example unique\_token (text), and set it once at creation time.

• Data type has a text field “unique\_token”.
• Workflow “When Thing is created” → set unique\_token = random string.
• Build URL manually: concatenate your domain + “?id=” + Thing’s unique\_token.

// Example random string action inside a workflow:
// Make changes to Post:
// unique_token = Calculate formula → Generate random string (length 24)

Important notes

• Never regenerate slugs or tokens unless you want the URL to change.
• If you use slugs, Bubble prevents duplicates for you.
• If you use your own token field, make it long enough to avoid collisions.