BMP to WEBP Converter

Create reliable WEBP files locally in your browser.

Drop BMP files here

Hover here and press Ctrl+V to paste

Up to 50 MB each · 50 files per batch

Files stay on your deviceLocal browser processing

No signup or watermarkDownload clean results

Controlled batch conversionUp to 30 at once · 3 at 50 MB

Shrink large uncompressed BMP images into practical WebP assets while preserving dimensions and exposing a simple quality choice.

How to convert BMP to WEBP

Choose supported 24-bit or 32-bit BMP files.
Select a WebP quality preset for the batch.
Compare original and output sizes before downloading.

When this converter is useful

Publish legacy bitmap screenshots on a modern website.
Reduce storage and transfer costs for a BMP asset folder.

Supported files and limitations

Uncompressed 24-bit and 32-bit BMP only
WebP output requires a browser WebP encoder and is signature-checked before download
Maximum input size is 50 MB; decoded-memory limits also apply

BMP to WEBP questions

Will BMP to WebP preserve transparency?

Valid alpha from a supported 32-bit BMP is passed to the browser WebP encoder; 24-bit BMP files have no alpha channel to preserve.

Do these files leave my device?

No. Supported files are inspected and converted in this browser tab. Up to 50 files can be queued; up to 30 smaller files or three 50 MB files can be processed at once.