Static files

Static assets placed in the static/ directory are served at the root of the webserver via the staticFiles() middleware. They are streamed directly from disk for optimal performance with ETag headers.

main.ts

import { staticFiles } from "fresh";

const app = new App()
  .use(staticFiles());

Caching headers#

By default, Fresh adds caching headers for the src and srcset attributes on <img> and <source> tags.

main.tsx

// Caching headers will be automatically added
app.get("/user", (ctx) => ctx.render(<img src="/user.png" />));

You can always opt out of this behaviour per tag, by adding the data-fresh-disable-lock attribute.

main.tsx

// Opt-out of automatic caching headers
app.get(
  "/user",
  (ctx) => ctx.render(<img src="/user.png" data-fresh-disable-lock />),
);

Adding caching headers manually#

Use the asset() function to add caching headers manually. It will be served with a cache lifetime of one year.

routes/about.tsx

import { asset } from "fresh/runtime";

export default function About() {
  // Adding caching headers manually
  return <a href={asset("/brochure.pdf")}>View brochure</a>;
}