Bitmap to Byte Array Converter

This free online browser-based program converts a BMP image into a byte array representing its pixel colors. A byte array is an ordered sequence of 8-bit values. Each byte can be written as a decimal number from 0 to 255 or as a hexadecimal value from 00 to ff. In this conversion, every pixel contributes three such bytes: one for red, one for green, and one for blue. The tool reads the bitmap row by row, starting at the upper-left pixel and continuing to the lower-right pixel, and writes the three-channel values of each pixel in sequence. The "Print RGB Bytes" mode writes channel values as decimal numbers. For example, a white pixel becomes "255, 255, 255", a black pixel becomes "0, 0, 0", and a bright red pixel becomes "255, 0, 0". The "Print Hex Bytes" mode writes the same channel values in base 16. Each byte uses exactly two hex digits, from 00 to ff, so the same white, black, and red pixels become "ff, ff, ff", "00, 00, 00", and "ff, 00, 00". Although colors are commonly described in RGB order, standard 24-bit BMP files usually store the three-channel bytes in BGR order. You can select BGR in the byte-order options to reproduce this channel order, use RGB for a more conventional color representation, or choose one of the other supported orders: RBG, GRB, GBR, or BRG. Hexadecimal output can also be customized by adding the "0x" prefix and using uppercase letters A through F. You can output the bytes as a plain list such as "r, g, b, r, g, b", a one-dimensional array such as "[r, g, b, r, g, b]", a pixel-grouped array such as "[[r, g, b], [r, g, b]]", a row-grouped array such as "[[r, g, b, r, g, b], ...]", or a fully nested array such as "[[[r, g, b], [r, g, b]], ...]". The bracket type and the separators between channel values and complete pixels can be adjusted independently. You can also insert a line break between consecutive bitmap rows so that the text layout follows the width and row structure of the original bitmap. To perform the reverse conversion and build a BMP image from pixel byte values, use our Convert Byte Array to Bitmap tool. Bmp-abulous!