BMP to GIF Converter

About BMP to GIF

Decodes a BMP in your browser and writes it out as a genuine single-frame GIF89a file. GIF is the old 256-color format with on-off transparency and optional animation, still requested by some legacy systems, forums and email templates. The result here is a single still frame; nothing is animated.

How to use it

1. Drop a BMP file onto the drop zone or click to choose a .bmp file.
2. Look over the Source preview to be sure the correct bitmap is loaded.
3. Press Convert to GIF. No options apply, so there is no quality or size control.
4. Review the Output panel, then press Download GIF.
5. Use Reset if you want to convert a different bitmap.

When to use it

• Satisfying a legacy uploader or CMS field that only lists .gif among its accepted extensions.
• Producing a static placeholder for a spot in a page template that expects a GIF.
• Checking how a bitmap behaves when a workflow insists on the .gif extension.

Questions about BMP to GIF

Does the tool reduce the image to 256 colors?

Yes. A picture with 256 or fewer colors keeps them exactly. Anything richer is reduced to a 256-color palette chosen by a median-cut algorithm, and there is no setting for the color count.

Is the downloaded file really GIF data?

Yes. Browsers can natively encode only PNG, JPEG and WebP from a canvas, so this tool writes the GIF itself: a GIF89a header, a color table and LZW-compressed pixels. Strict GIF readers open it without trouble.

Can I make an animated GIF from several bitmaps?

No. Each run takes one image and produces one still frame. Building animation requires a frame sequencer that this converter does not have.

Why did the file get smaller than my BMP?

A BMP holds raw pixels at three bytes each, while a GIF stores one palette index per pixel and compresses it with LZW. The result is usually a fraction of the bitmap's size.

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