diff --git a/docs/Project.toml b/docs/Project.toml
index c12fbd9d91b..dd27a7aa120 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -1,2 +1,4 @@
 [deps]
+Documenter = "e30172f5-a6a5-5a46-863b-614d45cd2de4"
+DocumenterLaTeX = "cd674d7a-5f81-5cf3-af33-235ef1834b99"
 DocumenterTools = "35a29f4d-8980-5a13-9543-d66fff28ecb8"
diff --git a/docs/make.jl b/docs/make.jl
index b008aa9b47d..d844f506b10 100644
--- a/docs/make.jl
+++ b/docs/make.jl
@@ -1,7 +1,8 @@
-using Documenter, DocumenterTools
+using Documenter, DocumenterTools, DocumenterLaTeX
 
 makedocs(
     modules = [Documenter, DocumenterTools],
+    format = Documenter.Writers.LaTeXWriter.LaTeX(),
     clean = false,
     assets = ["assets/favicon.ico"],
     sitename = "Documenter.jl",
diff --git a/src/Documents.jl b/src/Documents.jl
index 8276e78bc86..dcab56d343a 100644
--- a/src/Documents.jl
+++ b/src/Documents.jl
@@ -184,7 +184,7 @@ struct User
     root    :: String  # An absolute path to the root directory of the document.
     source  :: String  # Parent directory is `.root`. Where files are read from.
     build   :: String  # Parent directory is also `.root`. Where files are written to.
-    format  :: Vector{Symbol} # What format to render the final document with?
+    format  :: Vector{Any} # What format to render the final document with?
     clean   :: Bool           # Empty the `build` directory before starting a new build?
     doctest :: Union{Bool,Symbol} # Run doctests?
     linkcheck::Bool           # Check external links..
@@ -262,8 +262,9 @@ function Document(plugins;
     )
     Utilities.check_kwargs(others)
 
-    fmt = Formats.fmt(format)
-    @assert !isempty(fmt) "No formats provided."
+    # fmt = Formats.fmt(format)
+    # @assert !isempty(fmt) "No formats provided."
+    fmt = [format]
 
     if version == "git-commit"
         version = "git:$(Utilities.get_commit_short(root))"
diff --git a/src/Writers/LaTeXWriter.jl b/src/Writers/LaTeXWriter.jl
index f93f0bdb431..8253dc2c52f 100644
--- a/src/Writers/LaTeXWriter.jl
+++ b/src/Writers/LaTeXWriter.jl
@@ -14,6 +14,13 @@ navigation menu. It goes into the `\\title` LaTeX command.
 """
 module LaTeXWriter
 
+struct LaTeX
+    info::Dict{String,Any}
+end
+function LaTeX()
+    return LaTeX(Dict{String,Any}("engine" => "latexmk"))
+end
+
 import ...Documenter:
     Anchors,
     Builder,
@@ -53,7 +60,7 @@ const DOCUMENT_STRUCTURE = (
     "subparagraph",
 )
 
-function render(doc::Documents.Document)
+function render(doc::Documents.Document, fmt::LaTeX)
     mktempdir() do path
         cp(joinpath(doc.user.root, doc.user.build), joinpath(path, "build"))
         cd(joinpath(path, "build")) do
@@ -86,7 +93,7 @@ function render(doc::Documents.Document)
             cp(STYLE, "documenter.sty")
 
             # compile .tex and copy over the .pdf file if compile_tex return true
-            status = compile_tex(texfile)
+            status = compile_tex(doc, fmt, texfile)
             status && cp(pdffile, joinpath(doc.user.root, doc.user.build, pdffile); force = true)
         end
     end
@@ -94,8 +101,9 @@ end
 
 const DOCKER_IMAGE_TAG = "0.1"
 
-function compile_tex(texfile)
-    engine = get(ENV, "DOCUMENTER_LATEX_ENGINE", "latexmk") # TODO: make this configurable from makedocs
+function compile_tex(doc, fmt, texfile)
+    # engine = get(ENV, "DOCUMENTER_LATEX_ENGINE", "docker") # TODO: make this configurable from makedocs
+    engine = get(fmt.info, "engine", "docker")
     if engine == "latexmk"
         Sys.which("latexmk") === nothing && (@error "LaTeXWriter: latexmk command not found."; return false)
         @info "LaTeXWriter: using latexmk to compile tex."
diff --git a/src/Writers/Writers.jl b/src/Writers/Writers.jl
index 37b518c7f35..ad275a4d6a6 100644
--- a/src/Writers/Writers.jl
+++ b/src/Writers/Writers.jl
@@ -35,11 +35,11 @@ Selectors.order(::Type{LaTeXFormat})    = 2.0
 Selectors.order(::Type{HTMLFormat})     = 3.0
 
 Selectors.matcher(::Type{MarkdownFormat}, fmt, _) = fmt === :markdown
-Selectors.matcher(::Type{LaTeXFormat},    fmt, _) = fmt === :latex
+Selectors.matcher(::Type{LaTeXFormat},    fmt, _) = fmt === :latex || isa(fmt, LaTeXWriter.LaTeX)
 Selectors.matcher(::Type{HTMLFormat},     fmt, _) = fmt === :html
 
 Selectors.runner(::Type{MarkdownFormat}, _, doc) = MarkdownWriter.render(doc)
-Selectors.runner(::Type{LaTeXFormat},    _, doc) = LaTeXWriter.render(doc)
+Selectors.runner(::Type{LaTeXFormat},    fmt, doc) = LaTeXWriter.render(doc, fmt)
 Selectors.runner(::Type{HTMLFormat},     _, doc) = HTMLWriter.render(doc)
 
 """