diff --git a/Project.toml b/Project.toml
index 1e1950d..034e2d6 100644
--- a/Project.toml
+++ b/Project.toml
@@ -14,6 +14,7 @@ HDF5 = "f67ccb44-e63f-5c2f-98bd-6dc0ccc4ba2f"
 IterTools = "c8e1da08-722c-5040-9ed9-7db0dc04731e"
 JLD2 = "033835bb-8acc-5ee8-8aae-3f567f8a3819"
 PhysicalParticles = "78724250-4eb2-11e9-0f34-13a7aab864c5"
+PrecompileTools = "aea7be01-6a6a-4083-8856-8a6e6704d82a"
 Printf = "de0858da-6303-5e67-8744-51eddeeeb8d7"
 ProgressMeter = "92933f4c-e287-5a05-a399-4b506db050ca"
 Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
@@ -29,10 +30,11 @@ CSV = "0.9, 0.10"
 Combinatorics = "1"
 ConfParser = "0.1"
 FileIO = "1"
-HDF5 = "0.15, 0.16"
+HDF5 = "0.15, 0.16, 0.17"
 IterTools = "1.3"
 JLD2 = "0.4"
 PhysicalParticles = "1"
+PrecompileTools = "1"
 ProgressMeter = "1"
 Reexport = "1"
 StaticArrays = "1"
diff --git a/src/AstroIO.jl b/src/AstroIO.jl
index afed729..eb51ef4 100644
--- a/src/AstroIO.jl
+++ b/src/AstroIO.jl
@@ -1,5 +1,6 @@
 module AstroIO
 
+using PrecompileTools
 using Reexport
 using Unitful, UnitfulAstro
 using FileIO, JLD2, HDF5
@@ -90,4 +91,5 @@ include("PrettyPrint.jl")
 include("Tools.jl")
 include("ConfParser.jl")
 
+include("precompile.jl")
 end # module
diff --git a/src/precompile.jl b/src/precompile.jl
new file mode 100644
index 0000000..6751d1b
--- /dev/null
+++ b/src/precompile.jl
@@ -0,0 +1,31 @@
+@setup_workload begin
+    @compile_workload begin
+        foldertest = joinpath(@__DIR__, "../test")
+
+        h, d = read_gadget2(joinpath(foldertest, "gassphere_littleendian.gadget2"), uAstro)
+        write_gadget2(joinpath(foldertest, "testGadget.gadget2"), h, d)
+        write_gadget2(joinpath(foldertest, "testGadgetHeaderGeneration.gadget2"), d)
+        pos = read_gadget2_pos(joinpath(foldertest, "gassphere_littleendian.gadget2"), uAstro, uGadget2)
+        h, d = read_gadget2(joinpath(foldertest, "pot_acc.format2.gadget2"), uAstro, uGadget2)
+        h, d = read_gadget2(joinpath(foldertest, "pot_acc.format2.gadget2"), nothing, uGadget2)
+        h, d = read_gadget2(joinpath(foldertest, "pot_acc.format2.gadget2"), nothing, nothing)
+        pos = read_gadget2_pos(joinpath(foldertest, "pot_acc.format2.gadget2"), uGadget2)
+
+        h, d = read_gadget2(joinpath(foldertest, "pot_acc.format2.gadget2"), uAstro, uGadget2)
+        write_gadget2_format2(joinpath(foldertest, "pot_acc.format2.test.gadget2"), h, d, acc = true, pot = true)
+        # h, d = load(joinpath(foldertest, "gassphere_littleendian.gadget2"), uAstro)
+        stars2d = [Star2D() for i = 1:10]
+        write_csv(joinpath(foldertest, "testcsvStar2D"), stars2d, nothing)
+        stars = [Star(uAstro) for i = 1:10]
+        write_csv(joinpath(foldertest, "testcsvStar"), stars, uAstro)
+        data = [[Star() for i = 1:10]; [Ball() for i = 1:10]]
+        write_csv(joinpath(foldertest, "testcsvGeneral"), data, nothing)
+        write_ramses(joinpath(foldertest, "ramses.csv"), stars)
+        header, data = read_gadget2(joinpath(foldertest, "gassphere_littleendian.gadget2"), uAstro)
+        d = [Star2D() for i = 1:10]
+        write_gadget2_jld(joinpath(foldertest, "testjldGadget.jld2"), header, d)
+        h, d = read_gadget2_jld(joinpath(foldertest, "testjldGadget.jld2"))
+        write_jld(joinpath(foldertest, "testjldGeneral.jld2"), d)
+        d = read_jld(joinpath(foldertest, "testjldGadget.jld2"))
+    end
+end