Free Bitmap tools online

Embed a bitmap as a data: URI.

Decode a BMP data URI back into a bitmap file.

Build a BMP file from raw RGB values or hex colours.

Dump the raw pixel values of an image.

List an image's distinct colours with frequencies.

Adjust brightness, contrast or saturation of a bitmap.

Re-encode an image as 32-bit BMP with transparency.

Re-encode an image as a 24-bit bitmap.

Swap one entry of the bitmap's colour table for another colour.

Randomly permute the bitmap's colour table.

Blit one bitmap onto another with AND, OR, XOR, NAND or copy raster operations.

Corrupt a bitmap on purpose for parser and fuzz testing.