diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..6243b33
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,12 @@
+module github.com/santrancisco/certstream_screenshot
+
+require (
+	github.com/fatih/color v1.7.0 // indirect
+	github.com/gorilla/websocket v1.4.0
+	github.com/jmoiron/jsonq v0.0.0-20150511023944-e874b168d07e
+	github.com/mattn/go-colorable v0.1.0 // indirect
+	github.com/mattn/go-isatty v0.0.4 // indirect
+	github.com/pkg/errors v0.8.1
+	github.com/santrancisco/chromedp v0.1.3
+	github.com/santrancisco/logutils v0.0.0-20180711235843-882f997ce93a
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..82e6b40
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,38 @@
+github.com/chromedp/cdproto v0.0.0-20180713053126-e314dc107013 h1:8nmuTwCseJcww39MvVHI59223+PxSzn6g3cl8ChF0/4=
+github.com/chromedp/cdproto v0.0.0-20180713053126-e314dc107013/go.mod h1:C2GPAraqdt1KfZU7aSmx1XUgarNq/3JmxevQkmCjOVs=
+github.com/chromedp/cdproto v0.0.0-20190207000234-34a5588f6c0e h1:W+NmCDxT3g5yIiE55frPTbOk/mrjbpZ8uL+gx+vYJ34=
+github.com/chromedp/cdproto v0.0.0-20190207000234-34a5588f6c0e/go.mod h1:xquOK9dIGFlLaIGI4c6IyfLI/Gz0LiYYuJtzhsUODgI=
+github.com/chromedp/chromedp v0.1.2 h1:qB/dpbbbOPGkKyZU2gKB49jp+ZvY9C3rPUfYELLz+6g=
+github.com/chromedp/chromedp v0.1.2/go.mod h1:83UDY5CKmHrvKLQ6vVU+LVFUcfjOSPNufx8XFWLUYlQ=
+github.com/disintegration/imaging v1.4.2 h1:BSVxoYQ2NfLdvIGCDD8GHgBV5K0FCEsc0d/6FxQII3I=
+github.com/disintegration/imaging v1.4.2/go.mod h1:9B/deIUIrliYkyMTuXJd6OUFLcrZ2tf+3Qlwnaf/CjU=
+github.com/disintegration/imaging v1.6.0 h1:nVPXRUUQ36Z7MNf0O77UzgnOb1mkMMor7lmJMJXc/mA=
+github.com/disintegration/imaging v1.6.0/go.mod h1:xuIt+sRxDFrHS0drzXUlCJthkJ8k7lkkUojDSR247MQ=
+github.com/fatih/color v1.7.0 h1:DkWD4oS2D8LGGgTQ6IvwJJXSL5Vp2ffcQg58nFV38Ys=
+github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
+github.com/gorilla/websocket v1.2.0 h1:VJtLvh6VQym50czpZzx07z/kw9EgAxI3x1ZB8taTMQQ=
+github.com/gorilla/websocket v1.2.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
+github.com/gorilla/websocket v1.4.0 h1:WDFjx/TMzVgy9VdMMQi2K2Emtwi2QcUQsztZ/zLaH/Q=
+github.com/gorilla/websocket v1.4.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
+github.com/jmoiron/jsonq v0.0.0-20150511023944-e874b168d07e h1:ZZCvgaRDZg1gC9/1xrsgaJzQUCQgniKtw0xjWywWAOE=
+github.com/jmoiron/jsonq v0.0.0-20150511023944-e874b168d07e/go.mod h1:+rHyWac2R9oAZwFe1wGY2HBzFJJy++RHBg1cU23NkD8=
+github.com/knq/sysutil v0.0.0-20180306023629-0218e141a794 h1:hgWKTlyruPI7k8W+0FmTMLf+8d2KPxyzTxsfDDQhNp8=
+github.com/knq/sysutil v0.0.0-20180306023629-0218e141a794/go.mod h1:BjPj+aVjl9FW/cCGiF3nGh5v+9Gd3VCgBQbod/GlMaQ=
+github.com/knq/sysutil v0.0.0-20181215143952-f05b59f0f307 h1:vl4eIlySbjertFaNwiMjXsGrFVK25aOWLq7n+3gh2ls=
+github.com/knq/sysutil v0.0.0-20181215143952-f05b59f0f307/go.mod h1:BjPj+aVjl9FW/cCGiF3nGh5v+9Gd3VCgBQbod/GlMaQ=
+github.com/mailru/easyjson v0.0.0-20180606163543-3fdea8d05856 h1:hOnidOuIWNsFRPcxxStGeN3NNm4n4+w6KJ9cVJIh70o=
+github.com/mailru/easyjson v0.0.0-20180606163543-3fdea8d05856/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
+github.com/mailru/easyjson v0.0.0-20180823135443-60711f1a8329 h1:2gxZ0XQIU/5z3Z3bUBu+FXuk2pFbkN6tcwi/pjyaDic=
+github.com/mailru/easyjson v0.0.0-20180823135443-60711f1a8329/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
+github.com/mattn/go-colorable v0.1.0 h1:v2XXALHHh6zHfYTJ+cSkwtyffnaOyR1MXaA91mTrb8o=
+github.com/mattn/go-colorable v0.1.0/go.mod h1:9vuHe8Xs5qXnSaW/c/ABM9alt+Vo+STaOChaDxuIBZU=
+github.com/mattn/go-isatty v0.0.4 h1:bnP0vzxcAdeI1zdubAl5PjU6zsERjGZb7raWodagDYs=
+github.com/mattn/go-isatty v0.0.4/go.mod h1:M+lRXTBqGeGNdLjl/ufCoiOlB5xdOkqRJdNxMWT7Zi4=
+github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
+github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/santrancisco/chromedp v0.1.3 h1:2vzouU2uRQCOwYHLYev/IcOwgDT0l71g+xq5+mSYsgY=
+github.com/santrancisco/chromedp v0.1.3/go.mod h1:KWeSo7DW7os0tEekUd371rO/YFYiJig5xFvIKgBM4yM=
+github.com/santrancisco/logutils v0.0.0-20180711235843-882f997ce93a h1:aWAcFGSuZakwgaucn8NUfGFiCK7HKSfn3kL/v2Nr6uE=
+github.com/santrancisco/logutils v0.0.0-20180711235843-882f997ce93a/go.mod h1:UH9tSg7eSkeQHhaaFzE1ciIyJ8ljb+DB22+9JX2IYYU=
+golang.org/x/image v0.0.0-20180708004352-c73c2afc3b81 h1:00VmoueYNlNz/aHIilyyQz/MHSqGoWJzpFv/HW8xpzI=
+golang.org/x/image v0.0.0-20180708004352-c73c2afc3b81/go.mod h1:ux5Hcp/YLpHSI86hEcLt0YII63i6oz57MZXIpbrjZUs=