Custom URL Shortener
Create short links with your own custom slugs. Turn a random string of characters into something people actually remember.
What Are Custom Slugs?
A slug is the part of a short URL after the domain. By default, zip1.io generates a random slug like zip1.io/x3kq. With custom slugs, you choose what comes after the slash — so you can create links like zip1.io/product-launch or zip1.io/summer-sale.
Why Use Custom Slugs?
🏷️ Branding
Reinforce your brand with every link you share. Consistent, recognizable slugs build trust with your audience.
📣 Shareability
Links like zip1.io/promo are easy to say out loud, type from memory, or include in print materials.
📊 Campaign Tracking
Name your links after your campaigns so analytics are immediately understandable — no deciphering random codes.
How to Create a Custom Slug
Via the web form — go to zip1.io, click "Advanced Options", and fill in the custom alias field.
Via the API — pass the alias field in your POST request:
curl -X POST http://zip1.io/api/create \
-H "Content-Type: application/json" \
-d '{
"url": "https://your-long-url.com/page",
"alias": "my-custom-slug"
}'Slugs must be 3–16 alphanumeric characters (letters, numbers, hyphens). If the slug is already taken, the API returns a 409 conflict error.
FAQ
-
Do I need an account to use custom slugs?
No. Custom slugs work without any account or API key. Just include the
aliasfield in your request. -
What characters are allowed in a custom slug?
Alphanumeric characters (a–z, A–Z, 0–9) and hyphens, between 3 and 16 characters long. Emoji slugs are also supported — see our Emoji URLs page.
-
What happens if my slug is already taken?
The API returns a 409 Conflict response. Choose a different alias and try again.