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iSpeedIMG

Convert BMP to WebP online

Drop your BMP images in, download WebP back — converted locally in your browser, so nothing is ever uploaded. This page is preset to WebP output; the same converter handles every format, and no account or watermark is involved.

Conversion tool

or drag & drop them here

BMP files · converted on your device, never uploaded

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How to convert BMP to WebP

  1. Step 1

    Add your BMP images

    Drag BMP files onto the box or click to browse — queue as many as you like. They stay on your device the whole time.

  2. Step 2

    WebP is already set

    WebP is preset as the output. The quality slider sits at a balanced default for WebP; raise it for more detail, lower it for smaller files.

  3. Step 3

    Convert and download

    Each finished row shows its new WebP size next to the original. Download the files one by one — no waiting rooms, no watermarks.

Should you convert BMP to WebP?

WebP takes BMP's biggest problem — sheer size — and fixes it most thoroughly: lossless WebP still beats PNG on most content, and quality-adjusted WebP shrinks photos far further. The result is modern-format small without giving up transparency support.

In short: Choose BMP → WebP for the smallest modern file, whether quality is quality-adjusted or pixel-exact.

How BMP and WebP differ
Property BMP (source) WebP (output)
Compression None — raw, uncompressed pixels Lossy or lossless, very efficient
Transparency Rarely exposed by the format Yes — full alpha channel
Best for Programs that must read pixels without image codecs Modern websites and apps where file size matters
Worth knowing BMP stores pixels without compression, so files are enormous compared to every other format here. WebP itself supports animation too — this tool exports still images only.

BMP to WebP — frequently asked questions

How do I convert BMP to WebP?

Drop your BMP files into the converter above (several at a time is fine), confirm the output is set to WebP, then hit convert and download the results. Everything happens locally in your browser while the files stay on your device.

Does converting BMP to WebP lose quality?

At the default quality the difference is not visible in practice: the slider lets you keep more detail (larger file) or squeeze harder (smaller file) before the WebP is written. Transparent-looking areas keep their existing background.

Will the WebP file be smaller than my BMP file?

Yes — massively. WebP compresses far better than raw BMP; expect a fraction of the original size.

What happens to transparency and EXIF metadata?

The WebP target supports transparency, so any that exists in your image is kept. EXIF metadata such as camera model, timestamps and GPS coordinates is not carried over: the output is written as a brand-new file containing pixels only. That is a privacy bonus, not a bug.

Are my images uploaded to a server?

No. The converter decodes and re-encodes your images locally in your browser using Web Workers. Your files never leave your device, which is why the tool keeps working even on slow or offline connections.

Other conversions

Converting several kinds of files? The full Convert Image tool handles every format in one place.

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