BMP is a practical choice when you want to keep the source assets familiar. BMP is an older uncompressed bitmap format that stores pixels with very little processing. It is straightforward and widely readable, but files are usually large, so it is often converted to a modern web-friendly alternative. WebP brings a different balance of size, compatibility or flexibility. WebP is a modern image format from Google that combines efficient compression with broad browser support. It can deliver smaller files than JPEG or PNG for many visuals, making it a strong default for performance-focused publishing.
Use Local Optimizer to convert BMP to WebP locally, without uploading the file anywhere. The converter below works well for one-off jobs and batch workflows alike.
Unlike classic online tools, Local Optimizer processes your files directly in your browser using the HTML5 Canvas API. Your images are never uploaded to a server: that means total privacy and maximum speed, since processing does not depend on your internet connection. You can even use the tool offline once the page has loaded.