BMP to GIF Converter — Free, Online, No Upload

BMP files are uncompressed, high-color images — they store every pixel in full color depth, which makes them large but faithful. GIF is the opposite: compressed, 256-color, designed for simple graphics. Converting BMP to GIF intentionally trades color depth and file accuracy for a widely compatible legacy format.

The reason you'd convert BMP to GIF is usually platform compatibility. Old web systems, certain email clients, legacy content management tools, and some embedded display systems only accept GIF. If the BMP contains a simple graphic — a logo, an icon, a diagram with few colors — the 256-color limit of GIF may not be a visible problem. If the BMP is a photograph or gradient-heavy image, the color reduction will produce visible banding and dithering.

GIF's LZW compression actually makes it much smaller than BMP for simple graphics. A 5 MB BMP logo with flat colors might become a 50 KB GIF. For photographic BMPs, the result is less predictable — GIF may actually be larger than a JPEG of the same image because the forced 256-color palette requires more data to represent complex scenes via dithering. Only convert to GIF when the target platform specifically requires it; for web use, PNG or WebP handle everything GIF does with better quality and smaller files.

Typical sizes: BMP 35–40 MB (12MP photo); GIF 5–50 MB (animated clip (3s)).

Both formats keep every pixel, so the GIF looks the same as the BMP.