Private browser tool

Convert BMP to WebP

Turn a large BMP bitmap into an efficient WebP for modern websites and apps. Control quality and size locally in your browser.

WebP Choose a BMP image or drag and drop it here

One BMP image at a time

Output format: WebP

WebP quality 82%

Resize (optional)

WidthHeight

Lock aspect ratio Do not enlarge the image

Target maximum size (optional)

Quality is adjusted automatically when set. Output filename

The WebP is newly encoded without the source metadata.

BMP conversion guide

How to convert BMP to WebP

Choose a BMP, adjust the WebP quality or dimensions, and download a compact modern image.

Select an image from your device or drag it into the upload area.

Choose quality, dimensions, and an optional maximum file size.

Review the preview and file size, then save the converted image.

This free online BMP to WebP converter includes the following controls and output tools:

Private browser conversion. The image is processed locally and is not uploaded.
Custom dimensions. Set an exact width and height, lock the aspect ratio, and prevent accidental enlargement.
Quality and file-size controls. Set WebP quality or enter a maximum size in KB to find the highest quality that fits.
Before-and-after preview. Review the original and converted image, output dimensions, format, and file size.
File-size comparison. See the original and converted sizes and the percentage change.
Custom filename. Rename the converted file before downloading it.
Metadata-free export. The newly encoded WebP does not copy source metadata.

BMP files often use little or no compression. WebP can reduce their size dramatically for sharing and web delivery.

For pixel art and sharp graphics, inspect lossy output carefully or use BMP to PNG when exact decoded pixels matter.

Lower WebP quality reduces file size but can soften fine edges. Resizing can provide a larger size reduction.

BMP decoding is provided by the browser, and the new WebP does not copy source metadata.

Is this BMP to WebP converter free?

Yes. Convert one BMP at a time without an account.

Why is WebP smaller?

WebP uses efficient compression while many BMP files store nearly raw pixels.

Can I resize the BMP?

Yes. Set a width or height and optionally lock the aspect ratio.

Does my BMP get uploaded?

No. Your browser performs the conversion.

Is WebP good for pixel art?

Use a high quality setting or choose PNG to avoid lossy edge artifacts.

Use the full converter for HEIC, PNG, WebP, JPG, GIF, TIFF, BMP, AVIF, and more.