For reasonable size pdf files, this script can suffice:
from fasthtml.common import * import base64 app = FastHTML(hdrs=(picolink,)) @app.post("/post_and_display_pdf") async def display_pdf(myFile:UploadFile): bytes_stream = await myFile.read() base64_encoded_bytes = base64.b64encode(bytes_stream) return Iframe( src = f'data:Application/pdf;base64,{base64_encoded_bytes.decode('utf-8')}', style = "width:100%;height:100%" ) def formPDF (): form = Form(Group(Input(id="myFile", type="file"), Button("Add")), hx_post="/post_and_display_pdf", hx_target="#mypdf", hx_swap="outerhtml") return Main(form, style="flex:1") @app.route("/") def get(): return Div( H1("Upload and Display PDF's", style="text-align:center"), Div ( Div(id="mypdf", style="flex:1;position:relative;min-height:89vh;background:rgba(0,0,0,0.1)"), formPDF (), style="display:flex;gap:0.5rem" ) ) serve() 
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