diff --git a/NAMESPACE b/NAMESPACE
index db8f02e..400d17a 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -8,6 +8,7 @@ export(HARviewer)
 export(HARviewerOutput)
 export(install_splash)
 export(renderHARviewer)
+export(render_file)
 export(render_har)
 export(render_html)
 export(render_jpeg)
diff --git a/R/docker.r b/R/docker-splash.r
similarity index 65%
rename from R/docker.r
rename to R/docker-splash.r
index 406539a..2c1c311 100644
--- a/R/docker.r
+++ b/R/docker-splash.r
@@ -10,12 +10,16 @@
 #' stop_splash(splash_container)
 #' }
 install_splash <- function(host = harbor::localhost) {
-  harbor::docker_pull(host, "scrapinghub/splash")
+  harbor::docker_pull(host, "hrbrmstr/splashttpd")
 }
 
 #' Start a Splash server Docker container
 #'
 #' @param host Docker host; defauolts to `localhost`
+#' @param add_tempdir if `TRUE` then a local temporary directory (made with [tempdir]())
+#'   will be added to the mount configuration for use with [render_file](). You will need to
+#'       ensure the necessary system temp dirs are accessible as a mounts. For
+#'       macOS this means adding `/private` to said Docker config.
 #' @note you need Docker running on your system and have pulled the container with
 #'       [install_spash] for this to work. You should save the resultant `host`
 #'       object for use in [stop_splash].
@@ -26,13 +30,22 @@ install_splash <- function(host = harbor::localhost) {
 #' splash_container <- start_splash()
 #' stop_splash(splash_container)
 #' }
-start_splash <- function(host = harbor::localhost) {
+start_splash <- function(host = harbor::localhost, add_tempdir=TRUE) {
+
+  doc_opts <- c("-p", "5023:5023",
+                "-p", "8050:8050",
+                "-p", "8051:8051")
+
+  if (add_tempdir)
+    doc_opts <- c(doc_opts,
+                  sprintf("--volume=%s", sprintf("%s:/splashfiles", .pkgenv$temp_dir)))
+
+  # purrr::walk(doc_opts, message)
+
   harbor::docker_run(host,
-                     image = "scrapinghub/splash",
+                     image = "hrbrmstr/splashttpd",
                      detach = TRUE,
-                     docker_opts = c("-p", "5023:5023",
-                                     "-p", "8050:8050",
-                                     "-p", "8051:8051"))
+                     docker_opts = doc_opts)
 }
 
 #' Stop a running a Splash server Docker container
diff --git a/R/render_file.R b/R/render_file.R
new file mode 100644
index 0000000..c986e58
--- /dev/null
+++ b/R/render_file.R
@@ -0,0 +1,31 @@
+#' Return the HTML or image (png) of the javascript-rendered page in a local file
+#'
+#' The suggested use-case for this is rendering a widget
+#'
+#' TODO Test if container is running
+#' TODO Enable passing in of an htmlwidget and use saveWidget
+#'
+#' @md
+#' @param splash_obj Object created by a call to [splash]()
+#' @param file_path Absolute path to a filename on the local host. **This only works with a locally running Splash instance started with [start_splash]().**
+#' @param output either `html` or `png` to get the page content or an image capture
+#' @param viewport View width and height (in pixels) of the browser viewport to render the web page. Format is "`<width>x<height>`". e.g. 800x600. Default value is 1024x768.
+#' @return An XML document or `magick` object
+#' @export
+render_file <- function(splash_obj, file_path, output=c("html", "png"), wait=0, viewport="1024x768") {
+
+  output <- match.arg(output, c("html", "png"))
+
+  file.copy(file_path, .pkgenv$temp_dir)
+
+  fil <- basename(file_path)
+
+  URL <- sprintf("http://localhost:9999/%s", fil)
+
+  if (output == "html") {
+    render_html(splash_obj, URL, wait=wait, viewport=viewport)
+  } else {
+    render_png(splash_obj, URL, wait=wait, viewport=viewport)
+  }
+
+}
\ No newline at end of file
diff --git a/R/zzz.r b/R/zzz.r
new file mode 100644
index 0000000..010f25a
--- /dev/null
+++ b/R/zzz.r
@@ -0,0 +1,6 @@
+.pkgenv <- new.env(parent=emptyenv())
+
+.onAttach <- function(...) {
+  temp_dir <- normalizePath(gsub("//", "/", path.expand(tempdir())))
+  assign("temp_dir", temp_dir, envir=.pkgenv)
+}
\ No newline at end of file
diff --git a/man/install_splash.Rd b/man/install_splash.Rd
index ce1924e..d665ac3 100644
--- a/man/install_splash.Rd
+++ b/man/install_splash.Rd
@@ -1,5 +1,5 @@
 % Generated by roxygen2: do not edit by hand
-% Please edit documentation in R/docker.r
+% Please edit documentation in R/docker-splash.r
 \name{install_splash}
 \alias{install_splash}
 \title{Retrieve the Docker image for Splash}
diff --git a/man/render_file.Rd b/man/render_file.Rd
new file mode 100644
index 0000000..f67ba25
--- /dev/null
+++ b/man/render_file.Rd
@@ -0,0 +1,28 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/render_file.R
+\name{render_file}
+\alias{render_file}
+\title{Return the HTML or image (png) of the javascript-rendered page in a local file}
+\usage{
+render_file(splash_obj, file_path, output = c("html", "png"), wait = 0,
+  viewport = "1024x768")
+}
+\arguments{
+\item{splash_obj}{Object created by a call to \url{splash}}
+
+\item{file_path}{Absolute path to a filename on the local host. \strong{This only works with a locally running Splash instance started with \url{start_splash}.}}
+
+\item{output}{either \code{html} or \code{png} to get the page content or an image capture}
+
+\item{viewport}{View width and height (in pixels) of the browser viewport to render the web page. Format is "\code{<width>x<height>}". e.g. 800x600. Default value is 1024x768.}
+}
+\value{
+An XML document or \code{magick} object
+}
+\description{
+The suggested use-case for this is rendering a widget
+}
+\details{
+TODO Test if container is running
+TODO Enable passing in of an htmlwidget and use saveWidget
+}
diff --git a/man/start_splash.Rd b/man/start_splash.Rd
index 702f471..8f6ee5e 100644
--- a/man/start_splash.Rd
+++ b/man/start_splash.Rd
@@ -1,13 +1,18 @@
 % Generated by roxygen2: do not edit by hand
-% Please edit documentation in R/docker.r
+% Please edit documentation in R/docker-splash.r
 \name{start_splash}
 \alias{start_splash}
 \title{Start a Splash server Docker container}
 \usage{
-start_splash(host = harbor::localhost)
+start_splash(host = harbor::localhost, add_tempdir = TRUE)
 }
 \arguments{
 \item{host}{Docker host; defauolts to `localhost`}
+
+\item{add_tempdir}{if `TRUE` then a local temporary directory (made with [tempdir]())
+will be added to the mount configuration for use with [render_file](). You will need to
+    ensure the necessary system temp dirs are accessible as a mounts. For
+    macOS this means adding `/private` to said Docker config.}
 }
 \value{
 `harbor` `container` object
diff --git a/man/stop_splash.Rd b/man/stop_splash.Rd
index 3d22b5d..85a163a 100644
--- a/man/stop_splash.Rd
+++ b/man/stop_splash.Rd
@@ -1,5 +1,5 @@
 % Generated by roxygen2: do not edit by hand
-% Please edit documentation in R/docker.r
+% Please edit documentation in R/docker-splash.r
 \name{stop_splash}
 \alias{stop_splash}
 \title{Stop a running a Splash server Docker container}