diff --git a/collects/scribble/base-render.rkt b/collects/scribble/base-render.rkt
index b112289b..cbc6da6c 100644
--- a/collects/scribble/base-render.rkt
+++ b/collects/scribble/base-render.rkt
@@ -9,6 +9,7 @@
          setup/main-collects
          setup/path-relativize
          file/convertible
+         net/url-structs
          "render-struct.rkt")
 
 (provide render%
@@ -103,7 +104,9 @@
                            (unless (stop-at-part? p)
                              (loop p #f #f)))
                          (part-parts p)))))
-        (for/list ([k (in-hash-keys ht)]) (if (bytes? k) k (main-collects-relative->path k)))))
+        (for/list ([k (in-hash-keys ht)]) (if (or (bytes? k) (url? k))
+                                              k 
+                                              (main-collects-relative->path k)))))
 
     (define/private (extract-style-style-files s ht pred extract)
       (for ([v (in-list (style-properties s))])
diff --git a/collects/scribble/html-properties.rkt b/collects/scribble/html-properties.rkt
index 4c95fd08..b1f7d16e 100644
--- a/collects/scribble/html-properties.rkt
+++ b/collects/scribble/html-properties.rkt
@@ -1,15 +1,16 @@
 #lang scheme/base
 (require "private/provide-structs.rkt"
          racket/contract/base
-         xml/xexpr)
+         xml/xexpr
+         net/url-structs)
 
 (provide-structs
  [body-id ([value string?])]
  [hover-property ([text string?])]
  [script-property ([type string?]
                    [script (or/c path-string? (listof string?))])]
- [css-addition ([path (or/c path-string? (cons/c 'collects (listof bytes?)) bytes?)])]
- [js-addition ([path (or/c path-string? (cons/c 'collects (listof bytes?)) bytes?)])]
+ [css-addition ([path (or/c path-string? (cons/c 'collects (listof bytes?)) url? bytes?)])]
+ [js-addition ([path (or/c path-string? (cons/c 'collects (listof bytes?)) url? bytes?)])]
  [html-defaults ([prefix-path (or/c bytes? path-string? (cons/c 'collects (listof bytes?)))]
                  [style-path (or/c bytes? path-string? (cons/c 'collects (listof bytes?)))]
                  [extra-files (listof (or/c path-string? (cons/c 'collects (listof bytes?))))])]
diff --git a/collects/scribble/html-render.rkt b/collects/scribble/html-render.rkt
index 58464095..56b176e6 100644
--- a/collects/scribble/html-render.rkt
+++ b/collects/scribble/html-render.rkt
@@ -63,6 +63,8 @@
               (lambda (file path)
                 (cond [(bytes? file)
                        (make-inline (bytes->string/utf-8 file))]
+                      [(url? file)
+                       (make-ref (url->string file))]
                       [(not (eq? 'inline path))
                        (make-ref (or path (let-values ([(base name dir?)
                                                         (split-path file)])
@@ -671,7 +673,7 @@
                    ,title
                    ,(scribble-css-contents scribble-css (lookup-path scribble-css alt-paths))
                    ,@(map (lambda (style-file)
-                            (if (bytes? style-file)
+                            (if (or (bytes? style-file) (url? style-file))
                                 (scribble-css-contents style-file #f)
                                 (let ([p (lookup-path style-file alt-paths)])
                                   (unless p (install-file style-file))
@@ -687,7 +689,7 @@
                                   style-extra-files))
                    ,(scribble-js-contents script-file (lookup-path script-file alt-paths))
                    ,@(map (lambda (script-file)
-                            (if (bytes? script-file)
+                            (if (or (bytes? script-file) (url? script-file))
                                 (scribble-js-contents script-file #f)
                                 (let ([p (lookup-path script-file alt-paths)])
                                   (unless p (install-file script-file))
diff --git a/collects/scribblings/scribble/core.scrbl b/collects/scribblings/scribble/core.scrbl
index 4672e9cb..2be4e7bb 100644
--- a/collects/scribblings/scribble/core.scrbl
+++ b/collects/scribblings/scribble/core.scrbl
@@ -1,11 +1,13 @@
 #lang scribble/doc
-@(require scribble/manual "utils.rkt"
+@(require scribble/manual 
+          (except-in "utils.rkt" url)
           "struct-hierarchy.rkt" 
           (for-label scribble/manual-struct
                      file/convertible
                      setup/main-collects
                      scriblib/render-cond
-                     xml/xexpr))
+                     xml/xexpr
+                     net/url-structs))
 
 @title[#:tag "core"]{Structures And Processing}
 
@@ -1393,10 +1395,11 @@ script alternative to the element content.}
 
 @defstruct[css-addition ([path (or/c path-string? 
                                      (cons/c 'collects (listof bytes?))
+                                     url?
                                      bytes?)])]{
 
 Used as a @tech{style property} to supply a CSS file (if @racket[path]
-is a path, string, or list) or content (if @racket[path] is a byte
+is a path, string, or list), URL (if @racket[path] is a @racket[url]) or content (if @racket[path] is a byte
 string) to be referenced or included in the generated HTML. This
 property can be attached to any style, and all additions are collected
 to the top of the generated HTML page.
@@ -1407,6 +1410,7 @@ The @racket[path] field can be a result of
 
 @defstruct[js-addition ([path (or/c path-string? 
                                     (cons/c 'collects (listof bytes?))
+                                    url?
                                     bytes?)])]{
 
 Like @racket[css-addition], but for a Javascript file instead of a CSS file.}