CTCan I Code This?

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Can I code Bitly?

A URL shortener is a key-value lookup wearing a business model. Short code in, redirect out, count the click. Your own domain makes the links yours forever.

VIBE SCORE 97/100

how this is worked out

Why CanICodeThis says Build it

  • The data model is one table: code, destination, created, clicks
  • Edge platforms (Workers + KV, or any tiny server) serve redirects in single-digit milliseconds
  • Custom short domains — the thing Bitly charges real money for — cost you one DNS record

Read before building

  • Their link-management UI for a marketing team sharing hundreds of campaign links
  • Bot filtering in click analytics; raw counts overcount
  • Deep integrations with social schedulers if your links are born inside those tools

Bill of materials

The parts this build actually needs, each rated on its own — the average is the Vibe Score above.

Landing page99
CRUD database95

The build spec

Build me a URL shortener on a serverless edge platform with a KV store. Requirements: (1) POST /api/links with a destination URL returns a 6-character code, with optional custom alias, (2) GET /:code 301-redirects and increments a click counter, (3) a minimal password-protected admin page lists my links with click counts and lets me create or delete them. Reserve /api and /admin paths. Include deploy instructions for attaching my own custom domain.

Standard Parts/Free Alternatives

Don't feel like building it? These are already made, open-source, and free.

Shlink ↗Self-hosted URL shortener with a REST API and a real admin dashboard.Kutt ↗Open-source shortener with custom domains and basic analytics baked in.
categorylinks
time to codea weekend
Build it
their price$35/mo · $420/yr
last checked2026-08 · source ↗

Questions

Can I code Bitly?

Build it. A URL shortener is a key-value lookup wearing a business model. Short code in, redirect out, count the click. Your own domain makes the links yours forever.

How much does Bitly cost?

Bitly costs $35/mo (about $420/yr) as of 2026-08. That's what a working rebuild would save you.

What do I lose by building it myself?

Their link-management UI for a marketing team sharing hundreds of campaign links Bot filtering in click analytics; raw counts overcount Deep integrations with social schedulers if your links are born inside those tools

Is there a free alternative to Bitly I don't have to build?

Yes — Shlink, Kutt are open-source options worth trying before you build your own. Details are in the standard parts section on this sheet.

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