You can serve static files automatically from a directory using
- "Mount" a
StaticFiles()instance in a specific path.
from fastapi import FastAPI from fastapi.staticfiles import StaticFiles app = FastAPI() app.mount("/static", StaticFiles(directory="static"), name="static")
You could also use
from starlette.staticfiles import StaticFiles.
FastAPI provides the same
fastapi.staticfiles just as a convenience for you, the developer. But it actually comes directly from Starlette.
What is "Mounting"¶
"Mounting" means adding a complete "independent" application in a specific path, that then takes care of handling all the sub-paths.
This is different from using an
APIRouter as a mounted application is completely independent. The OpenAPI and docs from your main application won't include anything from the mounted application, etc.
You can read more about this in the Advanced User Guide.
"/static" refers to the sub-path this "sub-application" will be "mounted" on. So, any path that starts with
"/static" will be handled by it.
directory="static" refers to the name of the directory that contains your static files.
name="static" gives it a name that can be used internally by FastAPI.
All these parameters can be different than "
static", adjust them with the needs and specific details of your own application.
For more details and options check Starlette's docs about Static Files.