---
title: Can I route based on letter casing on Vercel?
description: Information on whether or not it is possible to route based on letting casing with Vercel.
url: "https://vercel.com/kb/guide/can-i-route-based-on-letter-casing-on-vercel"
published: 2025-11-03
last_updated: 2026-10-02
authors: Matthew Sweeney
install_vercel_plugin: npx plugins add vercel/vercel-plugin
---

Vercel provides the ability to route requests based on the three different configuration properties:

- [`redirects`](https://vercel.com/docs/project-configuration#project-configuration/redirects)
  
- [`rewrites`](https://vercel.com/docs/project-configuration#project-configuration/rewrites)
  
- [`routes`](https://vercel.com/docs/project-configuration#legacy/routes)
  

While these properties provide different methods and degrees of flexibility when it comes to routing, it is **not possible** to route based on letter casing with configuration properties.

## Using Serverless Functions

By using [Serverless Functions](https://vercel.com/docs/functions), you can take advantage of code to achieve whatever outcome you require.

For more information on how to do this, take a look at the [Dynamic Routing](https://vercel.com/guides/how-can-i-increase-the-limit-of-redirects-or-use-dynamic-redirects-on-vercel#using-a-serverless-function) support article which contains code examples that allow you full flexibility over routing, the ability to handle errors, and caching headers for maximum performance.

## More Vercel Functions guides

- [How can I increase the limit of redirects or use dynamic redirects on Vercel?](/kb/guide/how-can-i-increase-the-limit-of-redirects-or-use-dynamic-redirects-on-vercel): Instructions on how to use Serverless Functions to handle redirects on Vercel.
- [Do Vercel Functions support WebSocket connections?](/kb/guide/do-vercel-serverless-functions-support-websocket-connections): Vercel Functions serve WebSocket connections natively, in public beta on all plans. Learn how connections pin to instances, how to handle reconnects, and where to keep shared state.
- [Vercel vs Render](/kb/guide/vercel-vs-render): A detailed guide to Vercel vs Render: compute models, AI infrastructure, Docker and container image support, background workers, and when to choose each platform for your project.