diff --git a/go.mod b/go.mod
index b060f9c..100cb06 100644
--- a/go.mod
+++ b/go.mod
@@ -10,4 +10,5 @@ require (
 require (
 	github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
 	github.com/mazznoer/csscolorparser v0.1.2 // indirect
+	golang.org/x/image v0.11.0
 )
diff --git a/go.sum b/go.sum
index 247b345..fa99ae0 100644
--- a/go.sum
+++ b/go.sum
@@ -4,5 +4,38 @@ github.com/mazznoer/colorgrad v0.9.1 h1:MB80JYVndKWSMEM1beNqnuOowWGhoQc3DXWXkFp6
 github.com/mazznoer/colorgrad v0.9.1/go.mod h1:WX2R9wt9B47+txJZVVpM9LY+LAGIdi4lTI5wIyreDH4=
 github.com/mazznoer/csscolorparser v0.1.2 h1:/UBHuQg792ePmGFzTQAC9u+XbFr7/HzP/Gj70Phyz2A=
 github.com/mazznoer/csscolorparser v0.1.2/go.mod h1:Aj22+L/rYN/Y6bj3bYqO3N6g1dtdHtGfQ32xZ5PJQic=
+github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/exp v0.0.0-20230801115018-d63ba01acd4b h1:r+vk0EmXNmekl0S0BascoeeoHk/L7wmaW2QF90K+kYI=
 golang.org/x/exp v0.0.0-20230801115018-d63ba01acd4b/go.mod h1:FXUEEKJgO7OQYeo8N01OfiKP8RXMtf6e8aTskBGqWdc=
+golang.org/x/image v0.11.0 h1:ds2RoQvBvYTiJkwpSFDwCcDFNX7DqjL2WsUgTNk0Ooo=
+golang.org/x/image v0.11.0/go.mod h1:bglhjqbqVuEb9e9+eNR45Jfu7D+T4Qan+NhQk8Ck2P8=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
+golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
+golang.org/x/text v0.12.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
diff --git a/io/reader/image.go b/io/reader/image.go
index f790a40..d02e879 100644
--- a/io/reader/image.go
+++ b/io/reader/image.go
@@ -1,9 +1,74 @@
 package reader
 
-import "maze-solver/maze"
+import (
+	"image"
+	"image/color"
+	"image/png"
+	"os"
 
-type ImageReader struct{}
+	"golang.org/x/image/draw"
+)
 
-func (r *ImageReader) Read(filename string) (*maze.Maze, error) {
-	return nil, nil
+type ImageReader struct {
+	Filename              string
+	PathColor, WallColor  color.Color
+	CellWidth, CellHeight int
+}
+
+func (r *ImageReader) Read() (*RawMaze, error) {
+	image, err := r.getShrunkImage()
+	if err != nil {
+		return nil, err
+	}
+
+	width, height := image.Bounds().Max.X, image.Bounds().Max.Y
+	ret := &RawMaze{
+		Width:  width,
+		Height: height,
+		Data:   make([][]byte, height),
+	}
+
+	n_chunks := width/CHUNK_SIZE + 1
+
+	for i := 0; i < height; i++ {
+		ret.Data[i] = make([]byte, n_chunks)
+	}
+
+	for y := 0; y < height; y++ {
+		for i := 0; i < n_chunks; i++ {
+			var chunk byte = 0 // all walls
+
+			end_index := min((i+1)*CHUNK_SIZE, width)
+
+			for x := i * CHUNK_SIZE; x < end_index; x++ {
+				c := image.At(x, y)
+				if c == r.PathColor {
+					chunk |= 1 << (CHUNK_SIZE - 1 - (x - i*CHUNK_SIZE))
+				}
+			}
+
+			ret.Data[y][i] = chunk
+		}
+	}
+
+	return ret, nil
+}
+
+func (r *ImageReader) getShrunkImage() (*image.RGBA, error) {
+	input, err := os.Open(r.Filename)
+	if err != nil {
+		return nil, err
+	}
+	defer input.Close()
+
+	// Decode the image (from PNG to image.Image):
+	src, _ := png.Decode(input)
+
+	// Set the expected size that you want:
+	dst := image.NewRGBA(image.Rect(0, 0, src.Bounds().Max.X/r.CellWidth, src.Bounds().Max.Y/r.CellHeight))
+
+	// Resize:
+	draw.NearestNeighbor.Scale(dst, dst.Rect, src, src.Bounds(), draw.Over, nil)
+
+	return dst, nil
 }
diff --git a/io/reader/image_test.go b/io/reader/image_test.go
new file mode 100644
index 0000000..9dbc24a
--- /dev/null
+++ b/io/reader/image_test.go
@@ -0,0 +1,112 @@
+package reader
+
+import (
+	"image/color"
+	"maze-solver/utils"
+	"testing"
+)
+
+func TestImageReader(t *testing.T) {
+	white := color.RGBA{255, 255, 255, 255}
+	black := color.RGBA{0, 0, 0, 255}
+	tests := []struct {
+		name                  string
+		width, height         int
+		cellWidth, cellHeight int
+		pathColor, wallColor  color.Color
+		filename              string
+		expected              [][]byte
+	}{
+		{
+			"Trivial",
+			5, 3,
+			40, 40,
+			white, black,
+			"../../assets/trivial.png",
+			[][]byte{
+				{0b_00100_000},
+				{0b_01110_000},
+				{0b_00010_000},
+			},
+		},
+		{
+			"Trivial Bigger",
+			7, 5,
+			40, 40,
+			white, black,
+			"../../assets/bigger.png",
+			[][]byte{
+				{0b_0001000_0},
+				{0b_0001000_0},
+				{0b_0111110_0},
+				{0b_0000010_0},
+				{0b_0000010_0},
+			},
+		},
+		{
+			"Bigger Staggered",
+			7, 5,
+			40, 40,
+
+			white, black,
+			"../../assets/bigger_staggered.png",
+			[][]byte{
+				{0b_0001000_0},
+				{0b_0001000_0},
+				{0b_0111110_0},
+				{0b_0000100_0},
+				{0b_0000100_0},
+			},
+		},
+		{
+			"Normal",
+			11, 11,
+			40, 40,
+			white, black,
+			"../../assets/normal.png",
+			[][]byte{
+				{0b_00000100, 0b000_00000},
+				{0b_01111101, 0b110_00000},
+				{0b_00000100, 0b010_00000},
+				{0b_01110111, 0b110_00000},
+				{0b_01010000, 0b010_00000},
+				{0b_01011111, 0b110_00000},
+				{0b_00010001, 0b010_00000},
+				{0b_01110111, 0b010_00000},
+				{0b_01000000, 0b010_00000},
+				{0b_01111101, 0b110_00000},
+				{0b_00000100, 0b000_00000},
+			},
+		},
+	}
+
+	for _, test := range tests {
+		reader := ImageReader{
+			Filename:   test.filename,
+			PathColor:  test.pathColor,
+			WallColor:  test.wallColor,
+			CellWidth:  test.cellWidth,
+			CellHeight: test.cellHeight,
+		}
+		got, err := reader.Read()
+		if err != nil {
+			t.Fatalf("%s: got error while reading, got\n%v", test.filename, err)
+		}
+
+		utils.AssertEqual(t, got.Width, test.width, "%s: width of raw maze don't match", test.name)
+		utils.AssertEqual(t, got.Height, test.height, "%s: height of raw maze don't match", test.name)
+		utils.AssertEqual(t, len(got.Data), len(test.expected), "%s: don't have the same number of rows", test.name)
+
+		for y, line_exp := range test.expected {
+			line_got := got.Data[y]
+			utils.AssertEqual(t, len(line_got), len(line_exp), "%s (line %v): don't have same number of chunks", test.name, y)
+
+			for i, chunk_exp := range line_exp {
+				chunk_got := line_got[i]
+				if chunk_got != chunk_exp {
+					t.Fatalf("%s (line %v): chunk %v don't coincide, %08b, want %08b", test.name, y, i, chunk_got, chunk_exp)
+				}
+			}
+		}
+	}
+}