diff --git a/Project.toml b/Project.toml
index 2a08ee2..ab8e2ff 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "QRCoders"
 uuid = "f42e9828-16f3-11ed-2883-9126170b272d"
 authors = ["Jérémie Gillet <jie.gillet@gmail.com> and contributors"]
-version = "1.4.4"
+version = "1.4.5"
 
 [deps]
 FileIO = "5789e2e9-d7fb-5bc7-8068-2c6fae9b9549"
@@ -19,13 +19,3 @@ ImageMagick = "1"
 StatsBase = "0.33"
 UnicodePlots = "2.7 - 2.12"
 julia = "1.3"
-
-[extras]
-ImageTransformations = "02fcd773-0e25-5acc-982a-7f6622650795"
-QRDecoders = "d4999880-6331-4276-8b7d-7ee1f305cff8"
-Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
-Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
-TestImages = "5e47fb64-e119-507b-a336-dd2b206d9990"
-
-[targets]
-test = ["ImageTransformations", "QRDecoders", "Test", "Random", "TestImages"]
diff --git a/docs/make.jl b/docs/make.jl
index 9891c7c..962a026 100644
--- a/docs/make.jl
+++ b/docs/make.jl
@@ -9,7 +9,7 @@ makedocs(
 
 deploydocs(
     repo = "github.com/JuliaImages/QRCoders.jl.git",
-    devurl = "master",
-    versions = ["v#.#", "stable" => "v^", "dev" =>  "master"],
-    # push_preview = true,
+    devurl = "dev",
+    devbranch = "master",
+    versions = ["v#.#", "stable" => "v^", "dev" =>  "dev"],
 )
diff --git a/src/export.jl b/src/export.jl
index 0d95b7a..d815555 100644
--- a/src/export.jl
+++ b/src/export.jl
@@ -102,7 +102,7 @@ end
     
 Export the `BitMatrix` `matrix` to an image with file path `path`.
 """
-function exportbitmat( matrix::BitMatrix
+function exportbitmat( matrix::AbstractMatrix{Bool}
                      , path::AbstractString
                      ; targetsize::Int=0
                      , pixels::Int=160)
diff --git a/test/Project.toml b/test/Project.toml
new file mode 100644
index 0000000..3321c7d
--- /dev/null
+++ b/test/Project.toml
@@ -0,0 +1,14 @@
+[deps]
+FileIO = "5789e2e9-d7fb-5bc7-8068-2c6fae9b9549"
+ImageCore = "a09fc81d-aa75-5fe9-8630-4744c3626534"
+ImageTransformations = "02fcd773-0e25-5acc-982a-7f6622650795"
+QRDecoders = "d4999880-6331-4276-8b7d-7ee1f305cff8"
+Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
+StatsBase = "2913bbd2-ae8a-5f71-8c99-4fb6c76f3a91"
+Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
+TestImages = "5e47fb64-e119-507b-a336-dd2b206d9990"
+ZBar = "ae056753-435e-4d6b-8005-e923ff6e8938"
+
+[compat]
+julia = "1.6"
+ZBar = "0.1.1"
\ No newline at end of file
diff --git a/test/runtests.jl b/test/runtests.jl
index 117a498..b5d0d10 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -1,13 +1,7 @@
-using QRCoders
-using Test
-using FileIO
-using Random
-using ImageCore
-using ImageTransformations
-using TestImages
-using StatsBase
+using Test, Random, StatsBase
+using FileIO, ImageCore, TestImages, ImageTransformations
+using QRCoders, QRDecoders, ZBar
 using QRDecoders.Syndrome: fillerasures!
-using QRDecoders
 
 using QRCoders:
     # build
@@ -49,6 +43,9 @@ imgpath = "testimages/"
 eclevels = [Low(), Medium(), Quartile(), High()]
 modes = [Numeric(), Alphanumeric(), Byte(), Kanji()]
 
+# interact with ZBar.jl
+include("tst_zbar.jl")
+
 # decompose QR matrix
 include("tst_locate.jl")
 
diff --git a/test/tst_zbar.jl b/test/tst_zbar.jl
new file mode 100644
index 0000000..13c3572
--- /dev/null
+++ b/test/tst_zbar.jl
@@ -0,0 +1,101 @@
+# interact with ZBar.jl
+
+#=
+Note for ZBar.jl
+    1. `decodeimg` works for multiple QR codes in one image(some message failed in `--xml` mode)
+    2. `decodesingle` works for single QR code in one image(some message might be misleading in `--noxml` mode)
+=#
+
+testzbar = "testimages/zbar/"
+mkpath(testzbar)
+
+@testset "Decode mode" begin
+    # Numeric mode
+    txt = join(rand(0:9, 10))
+    exportqrcode(txt, "$testzbar/numeric.png")
+    @test decodesingle("$testzbar/numeric.png") == txt
+    @test decodeimg("$testzbar/numeric.png")[1] == txt
+    txtall = join(0:9)
+    exportqrcode(txtall, "$testzbar/allnumeric.png")
+    @test decodesingle("$testzbar/allnumeric.png") == txtall
+    @test decodeimg("$testzbar/allnumeric.png")[1] == txtall
+
+    # Alphanumeric mode
+    txt = join(rand(keys(alphanumeric), 10))
+    exportqrcode(txt, "$testzbar/alphanum.png")
+    @test decodesingle("$testzbar/alphanum.png") == txt
+    @test decodeimg("$testzbar/alphanum.png")[1] == txt
+    txtall = join(keys(alphanumeric))
+    exportqrcode(txtall, "$testzbar/allalphanum.png")
+    @test decodesingle("$testzbar/allalphanum.png") == txtall
+    @test decodeimg("$testzbar/allalphanum.png")[1] == txtall
+
+    # Byte mode -- ASCII
+    txt = join(rand(Char.(0:127), 10))
+    exportqrcode(txt, "$testzbar/byte-ascii.png")
+    @test decodesingle("$testzbar/byte-ascii.png") == txt
+    ## decodeimg misdecode some message
+    @test_broken decodeimg("$testzbar/byte-ascii.png")[1] == txt
+
+    txtall = join(Char.(0:127))
+    exportqrcode(txtall, "$testzbar/allbyte-ascii.png")
+    @test decodesingle("$testzbar/allbyte-ascii.png") == txtall
+    ## decodeimg misdecode some message
+    @test_broken decodeimg("$testzbar/allbyte-ascii.png")[1] == txtall
+
+    # Byte mode -- 128-255
+    txt = "©®±²³"
+    exportqrcode(txt, "$testzbar/byte-128-255.png")
+    ## zbar use different encoding for 0xf0-0xff
+    @test_broken decodesingle("$testzbar/byte-128-255.png") == txt
+    @test_broken decodeimg("$testzbar/byte-128-255.png")[1] == txt
+
+    # UTF8 -- ZBar do not support UTF8
+    txt = "你好"
+    exportqrcode(txt, "$testzbar/utf8.png")
+    @test_broken decodesingle("$testzbar/utf8.png") == txt
+    @test_broken decodeimg("$testzbar/utf8.png")[1] == txt
+
+    # Kanji mode
+    txt = "茗荷"
+    exportqrcode(txt, "$testzbar/kanji.png")
+    @test decodesingle("$testzbar/kanji.png") == txt
+    ## decodeimg misdecode some message
+    @test_broken decodeimg("$testzbar/kanji.png")[1] == txt
+end
+
+
+@testset "Same message by different encoding" begin
+    # ASCII vs 128-255
+    txt = "©®±²³"
+    exportqrcode(txt, "$testzbar/ascii-128-255.png")
+    ## zbar use different encoding for 0xf0-0xff
+    @test_broken decodesingle("$testzbar/ascii-128-255.png") == txt
+    @test_broken decodeimg("$testzbar/ascii-128-255.png")[1] == txt
+
+    # ASCII vs UTF8
+    txt = "你好"
+    exportqrcode(txt, "$testzbar/ascii-utf8.png")
+    @test_broken decodesingle("$testzbar/ascii-utf8.png") == txt
+    @test_broken decodeimg("$testzbar/ascii-utf8.png")[1] == txt
+end
+
+@testset "Same message with different setting" begin
+    message = "Hello, world!"
+    for v in 1:5, eclevel in eclevels, mask in 0:7
+        exportqrcode(message, "$testzbar/v$(v)-m$(mask).png"; version=v, eclevel=eclevel, mask=mask)
+        @test decodesingle("$testzbar/v$(v)-m$(mask).png") == message == decodeimg("$testzbar/v$(v)-m$(mask).png")[1]
+    end
+    for v in vcat(1:33, [35, 36, 40])
+        exportqrcode(message, "$testzbar/version$v.png", version=v)
+        @test decodesingle("$testzbar/version$v.png") == message
+        @test decodeimg("$testzbar/version$v.png")[1] == message
+    end
+
+    # ZBar fail to detect QR code when the version is too large
+    for v in [34, 37, 38, 39]
+        exportqrcode(message, "$testzbar/version$v.png", version=v)
+        @test_broken decodesingle("$testzbar/version$v.png") == message
+        @test_broken decodeimg("$testzbar/version$v.png")[1] == message
+    end
+end
\ No newline at end of file