Features

shrtnr delivers a complete URL shortener in a single Cloudflare Worker.

Core capabilities

• Free hosting: runs on Cloudflare Workers + D1 (no VPS, no containers, no monthly bill).
• Short slugs: starting at 3 characters (32,768 unique combinations at that length).
• Custom slugs: like /my-campaign, alongside random slugs.
• Configurable root redirect: / can route visitors to a URL of your choice when they are not signed in.
• Dynamic redirect rules: _redirects-style placeholders (:name) and splat (* → :splat) for legacy migration paths. See Dynamic Redirect Rules.
• Link expiry: set an expires_at timestamp on a link.
• Enable/disable: stop or resume redirecting a link or slug at any time, without deleting it.

Analytics

• Click analytics: track referrer, country, device, and browser.
• Bot filtering: User-Agent heuristic classification, toggleable via "Filter out bot traffic" in settings.
• Self-referrer filtering: toggleable "Filter out self-referrers" to keep same-origin clicks out of the numbers.
• Referrer brand attribution: clicks from in-app browsers (LinkedIn, X, Facebook, Instagram, and other Android/iOS apps) attribute to the originating brand domain instead of an opaque android-app:// value.
• Time ranges: analytics support 24h, 7d, 30d, 90d, 1y, and all windows, with a delta_pct versus the prior window of equal length.

Admin dashboard

• Link management, analytics charts, and QR code generation.
• Multi-language admin UI: English, Indonesian, and Swedish built in.
• Themes: light/dark.
• Per-user settings: default slug length, default time range, analytics filter toggles, and more.

Integrations and auth

• API key authentication: scoped Bearer tokens for programmatic access. Create keys in the admin UI under API Keys.
• SDKs: TypeScript (@oddbit/shrtnr), Python (shrtnr), and Dart/Flutter (shrtnr). See SDKs.
• Built-in MCP server: at /_/mcp, authorized via Cloudflare Access OAuth, so Claude, Copilot, and other AI assistants can create and manage short links. See MCP Server.
• Browser extensions: Chrome / Firefox extensions to shorten the active tab in one click. See Browser Extensions.
• OpenAPI spec: the public API exposes an OpenAPI 3.1 spec at /_/api/openapi.json and an embedded Scalar API reference at /_/api/docs.

Custom pages

Beyond redirect links, shrtnr can host static content directly on a given slug (with custom HTTP status codes and response headers), useful for verification files, simple landing pages, and the like.

Deploy and operations

• One-click deploy: provisions the database and runs migrations automatically.
• Continuous deployment: Cloudflare Workers Builds redeploys on every push to the production branch, while database migrations are handled by a separate GitHub Actions workflow.

The full capability list evolves with each release; for the latest changes see the CHANGELOG.