What's the difference between BMP and WebP?

BMP is a Windows-era uncompressed raster format. WebP is Google's modern image format.

What quality should I pick?

For WebP, quality 75-85 is the sweet spot — small files with no visible difference from the original. Lower than 60 starts to show artifacts. Higher than 90 mostly just makes the file bigger.

Why convert away from BMP?

BMP is a Windows-era uncompressed raster format. Where it falls down: anything where file size matters (which is almost everywhere); web display, email, archive — pick literally any other format. WebP addresses that for most workflows.

When is WebP the right format?

WebP is a good choice for: web images of any kind — the modern default; replacing both JPG photos and PNG screenshots on a single site; animated images that would otherwise be GIFs (much smaller). It is a poor choice when print pipelines and pre-2020 software (use PNG/JPG for compatibility).

Anything surprising about BMP or WebP?

BMP can technically carry a small palette and run-length compression, but in practice 99% of BMPs in the wild are uncompressed. And on the WebP side: webP lossless is competitive with PNG and often smaller. Worth trying.

Does this work on mobile?

Yes. The drop zone falls back to your phone's file picker, and conversions run on-device just like desktop. Large files may be slower on mobile due to CPU and memory constraints, but the workflow is identical.

What's the maximum file size?

No hard limit — the browser handles it. Files under 50MB convert in a few seconds. Larger files work but may take longer as the browser allocates memory. If you hit issues, batch in smaller groups.

Convert BMP to WebP

Convert BMP to WebP for smaller files that every current browser displays. BMP is uncompressed, so expect a dramatic size reduction. Free, in your browser.

Drop images to convert

PNG, JPG, WebP, AVIF, JPEG XL, TIFF, BMP, GIF, SVG, HDR, ICO — any combination

Files stay on your device. Open DevTools' Network tab to verify.

Output format

WebP

Quality82%

Overview

Why convert BMP to WebP

WebP files are typically much smaller than BMP at equivalent quality — usually the main reason to make this conversion. Smaller files mean faster page loads, smaller email attachments, and less storage. BMP is uncompressed, so expect a dramatic size reduction.

Comparison

BMP vs WebP: what actually differs

BMP compared with WebP across encoding, fidelity, file size and support.
Attribute	BMP	WebP
Compression	—	Lossy or lossless
Transparency	No	Yes
Animation	No	Yes
Typical file size	Very large	Medium
Browser support	Major browsers will render BMP, but it's never the right choice for the web.	Supported by every evergreen browser since 2020 (Chrome, Firefox, Safari 14+, Edge). Older systems and some editing tools still struggle.

How to

How to convert BMP to WebP

01
Drop your BMP files
Drag one or more BMP files onto the dropzone above, or click to browse. Files stay on your device — nothing uploads.
02
Convert in your browser
convert.now decodes each BMP and re-encodes it as WebP via WebAssembly. The conversion runs in a Web Worker so the page stays responsive.
03
Download the result
Download a single WebP file or, for batch conversions, a zip of all converted files. Filenames preserve the originals.

Why here

Why convert.now

Private
Files stay in your browser. No upload step. Nothing for anyone to see.
Fast
No queue, no upload wait. Conversion starts the moment you drop a file.
Free
No ads. No file-count limit. No sign-up wall. Just the converter.

FAQ

BMP to WebP: common questions

No. The conversion from BMP to WebP runs entirely in your browser using WebAssembly. Files never leave your device. Open DevTools' Network tab if you'd like to verify — there are no network requests with file contents.

Related BMP converters

Last updated 27 August 2026

Why convert BMP to WebP

BMP vs WebP: what actually differs

How to convert BMP to WebP

Drop your BMP files

Convert in your browser

Download the result

Why convert.now

BMP to WebP: common questions

Related BMP converters