Convert your .bmp files to .webp format online for free. No software to install. Fast, secure, and easy.
Free — 3 conversions per day
Drag and drop your .bmp file or click to browse.
Select WebP as your output format.
Click Convert and download your .webp file.
BMP stores raw pixel data with zero compression, resulting in very large files. Converting to WebP applies lossy compression to make the file dramatically smaller with minimal visual quality loss.
BMP (Bitmap Image File, introduced in 1986) uses None (RLE optional but rarely used) compression. WebP (Web Picture Format, introduced in 2010) uses VP8 (lossy) / VP8L (lossless) compression. WebP adds transparency support that BMP lacks, which is valuable for logos, icons, and overlay graphics. WebP supports animation, unlike BMP. However, converting a static image will not create animation. BMP browser support: All modern browsers. WebP browser support: All modern browsers (Chrome, Firefox, Safari 14+, Edge).
The quality impact depends on the specific settings used during conversion. WebP preserves full quality with lossless compression.
Typical BMP file size: A 12MP photo: ~36 MB (24-bit uncompressed). Typical WebP file size: A 12MP photo at quality 80: ~2-3.5 MB. Expect a dramatic file size reduction — often 5-20x smaller — when converting from uncompressed BMP to WebP.
Always keep your original BMP file as a master copy. Convert to WebP only for distribution. If you need to make changes later, work from the lossless original to avoid compounding compression artifacts.
Convert BMP to WebP completely free with no limits. No hidden fees, no watermarks.
Create a free account in 10 seconds and start converting immediately. No credit card required.
Image conversions happen in your browser using the Canvas API. Your files never leave your device — zero server upload.
Convert files from any device — desktop, tablet, or phone. No software to install, works in any modern browser.
SquishConvert supports over 358 file conversion combinations across images, documents, audio, and video.
Your converted .webp file maintains the best possible quality. No unnecessary compression or quality loss.
Yes, BMP to WebP conversion is completely free with no limits. Image conversions happen in your browser.
Image conversions are instant — they happen directly in your browser without uploading to any server.
Absolutely. BMP to WebP conversion happens entirely in your browser. Your files never leave your device.
Currently, SquishConvert converts one file at a time. Batch conversion is coming soon — stay tuned!
Free users can convert files up to 10 MB. Pro users can convert files up to 500 MB.