BMP → WebP Converter

Drag & Drop your .bmp file here, or pick a file below. Nothing is uploaded.

Output width (px)

If only width is set, height keeps aspect ratio.

Output height (px)

If only height is set, width keeps aspect ratio.

WebP quality (1-100)

Higher quality ? larger file.

Speed / quality method

Browser support varies; falls back to default.

Load a BMP or use an example to preview.

Input: -

Output: -

BMP → WebP - Quick Cheat Sheet

Local only: Everything runs in your browser; files aren't uploaded.
Supported input: Standard uncompressed or RLE-compressed BMP usually decodes in modern browsers.
Sizing: Set width or height (or both). If one is blank, the other is computed from the aspect ratio.
Quality: 70-90 is a good starting range. Lower for smaller files; higher for fewer artifacts.
Transparency: BMP typically has no alpha; WebP supports it if the source contained an alpha channel.
Metadata: EXIF/ICC are generally lost through canvas encode.
Limits: Very large images may hit memory/canvas limits (guarded by this tool).

How conversion works