BMP to WebP Converter

Summary

This tool converts BMP (Bitmap) images to WebP format entirely inside your browser using the HTML5 Canvas API. BMP files are uncompressed and very large; WebP applies modern lossy or near-lossless compression that can shrink file size by 70–95% while retaining great visual quality. No files are uploaded to any server — your images stay completely private on your device. Adjust the quality slider to balance file size against visual fidelity before downloading.

How it works

1. Select or drag a BMP image onto the upload area.
2. The browser decodes the BMP file using its built-in image decoder.
3. The Canvas API renders the decoded pixels and encodes them as WebP.
4. Use the quality slider to balance file size against visual quality (0–100).
5. A live preview and file size comparison update whenever you move the slider.
6. Click "Download WebP" to save the converted image to your device.

Use cases

• Dramatically shrink large BMP screenshots for web publishing.
• Convert BMP exports from Windows Paint or legacy software to modern WebP.
• Prepare BMP assets for use in web design workflows where WebP is preferred.
• Reduce bandwidth costs by replacing bulky BMP files with compact WebP images.
• Convert BMP graphics or icons for use in web applications.
• Process images privately without uploading to any third-party service.
• Fine-tune the quality-to-size trade-off before sharing images online.
• Convert BMP exports from CAD, medical imaging, or industrial tools to WebP.

Frequently Asked Questions