WEBP to BMP Converter

About WEBP to BMP

Decodes a WebP file in your browser and writes it as a genuine 24-bit Windows bitmap, aimed at older Windows programs and embedded systems that only understand bitmaps. BMP is an uncompressed format, so expect very large files compared with WebP.

How to use it

1. Drop a WebP file onto the drop zone or click to pick a .webp file.
2. Confirm the Source preview shows what you expect.
3. Press Convert to BMP. No quality or size setting applies to this target.
4. Look at the Output panel and press Download BMP.
5. Press Reset to clear the tool for the next file.

Why a true BMP would be huge

A 1600 x 900 WebP file that is around 100 KB.

A genuine 24-bit BMP of that picture would need 1,600 x 3 x 900 + 54 = 4,320,054 bytes, about 4.1 MB. The file this tool saves has exactly that size, because the pixels are stored raw.

When to use it

• Feeding an image into legacy Windows software that lists BMP as its only input.
• Testing how a program handles a file with a .bmp extension.
• Handing an image to firmware tooling that expects bitmap-style filenames.

Questions about WEBP to BMP

Is the output a real Windows bitmap?

Yes. Canvas encoders write only PNG, JPEG and WebP, so the tool builds the bitmap itself. The file starts with the letters BM, has a 40-byte info header and stores uncompressed 24-bit rows, so programs that check the header accept it.

Why is the file so much larger than my WebP?

A bitmap stores raw pixel bytes with no compression, three per pixel. The 1600 x 900 example lands near 4.1 MB even though the WebP was only about 100 KB, which is normal for the format.

Is transparency kept?

No. A 24-bit bitmap has no alpha channel, so transparent pixels are blended onto white when the file is written. Use PNG or ICO if you need to keep see-through areas.

What should I use if I need a strict BMP?

This page already writes a strict BMP, so it is usually enough. If your software needs a different bit depth, such as 8-bit indexed or 32-bit with alpha, open the result in an image editor and export again.

Related tools

• BMP to WEBPConvert BMP images to WEBP format in your browser — no upload required.
• PNG to BMPEasily convert PNG images to BMP with this easy-to-use converter.
• PNG to WEBPEasily convert PNG images to WEBP with this easy-to-use converter.
• JPG to BMPEasily convert JPG images to BMP with this easy-to-use converter.
• JPG to WEBPEasily convert JPG images to WEBP with this easy-to-use converter.
• BMP to ICOConvert BMP images to ICO format