Convertr

BMP to WEBP Converter

Convert your Audio, Video and other Files from one format to another online for free!

Convert image files

BMP

BMP (Bitmap) is a raster image format developed by Microsoft for Windows. It usually stores pixels without compression, so images keep full detail but files are large. BMP is mostly used by legacy software and is often converted to PNG or JPG to save space.

WEBP

WebP is an image format developed by Google for the web. It supports lossy and lossless compression, transparency, and animation, and its files are usually smaller than JPG or PNG. All modern browsers support WebP, but some older apps and editors cannot open it.

What happens when BMP becomes WEBP

Source format

BMP is a simple bitmap format that is often uncompressed and therefore large.

Target format

WEBP supports lossy and lossless compression, transparency, and animation.

What changes

The BMP pixels are decoded and written using WEBP compression and color capabilities.

What is preserved
Pixel dimensions and visible composition are preserved unless resize or crop settings are selected.
What may be lost
Layers, editable vectors, camera-raw controls, animation, high bit depth, and metadata are preserved only when WEBP supports them.
Codec and quality implications
Color profile handling, bit depth, chroma sampling, and compression settings can change appearance or file size.
Realistic limitations
Multi-page, layered, animated, camera-raw, or very large images may be flattened, reduced to one frame, or rejected if the decoder cannot safely read them.

Conversion steps

  1. Upload a BMP file no larger than 1 GB.
  2. Confirm that WEBP is selected as the target.
  3. Download the WEBP file and check the result before deleting your source.

Troubleshooting

The BMP file is rejected or will not open.
Confirm that the file is not empty, password-protected, or corrupt and that its real format matches the extension.
The WEBP file is larger than expected.
Choose a more efficient codec or lower quality setting when available. Lossless and uncompressed targets are often larger by design.
Transparency, color, or animation changed.
Choose a target that supports the needed feature and keep the original file; JPG cannot store transparency or animation.

Privacy and file retention

Uploads and converted files are processed automatically and irreversibly deleted within 24 hours. You can delete them sooner with the delete control. Convertr does not read, mine, sell, or manually review file contents.

Read the privacy policy

Useful alternatives

BMP to AVIFUse this when AVIF better matches the app, codec, or editing workflow you need.BMP to EPSUse this when EPS better matches the app, codec, or editing workflow you need.WEBP to BMPUse this when BMP better matches the app, codec, or editing workflow you need.