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BMP to WEBP converter

Convert BMP to WEBP in your browser. No upload and no account: the file never leaves your device, so the only size limit is your device’s memory.

I want WEBP
90%
Icon sizes
How to make the SVG

Tracing suits logos, icons and flat artwork and scales cleanly. Photos are better kept as pixels inside the SVG.

16
50%
Dither Scatters black dots to suggest gray, instead of a hard cut-off.
Advanced 5
Keep the animation For animated GIF, WebP and APNG sources. Turn off to save just the first frame.
Rotate
Mirror horizontally
Mirror vertically

For an exact width and height, use the Resize Image tool instead.

Bytes of your files sent anywhere: 0 B

Related conversions

Need it the other way round? Convert WEBP to BMP

Other ways to convert BMP

Convert other formats to WEBP

Read more about the BMP format and the WEBP format, or see every image tool and all image conversions.

Should you convert BMP to WEBP?

You want to turn giant BMP files into tiny web-ready images.

A safe conversion when WEBP is what you need: both BMP and WEBP keep every pixel, so the picture itself doesn’t change.

Bear in mind WEBP is opens in current browsers and apps: it works in every current browser, but plenty of desktop apps, print shops and upload forms still refuse it.

BMP is an uncompressed grid of pixels; WEBP is a web image format that can be lossy or lossless, with transparency and animation. Use WEBP for pictures on your own website or app, where every kilobyte affects load time.

BMP and WEBP compared
Property BMP WEBP
Compression Uncompressed Lossy or lossless
Transparency No Yes
Animation No Yes
Support Opens almost everywhere Opens in current browsers and apps
Best for Old software and hardware that only understands raw bitmaps Images on websites, where smaller files load faster
Introduced 1990 2010

How to convert BMP to WEBP

  1. 01

    Add your BMP

    Drop your BMP image onto the box, or click to choose it. It is read from your disk and stays there.

  2. 02

    Check the settings

    The output is already set to WEBP. Change the quality if you want to; the defaults suit most files.

  3. 03

    Save the WEBP

    Press convert and save the WEBP. Several files come back together as a ZIP.

What changes when BMP becomes WEBP

Expect a much smaller file

BMP: A 12-megapixel image is about 36 MB. WEBP: Typically 25–35% smaller than the same JPG. Shrinking the file is often the main reason to make this conversion.

This page is put together from our notes on each format, choosing only what is true of BMP and WEBP, so every pairing states the same facts the same way. How these pages are made.

Why it doesn’t upload

Changing a picture’s format is work your browser already knows how to do. Sending your photos to a server first only adds waiting and risk, so nothing is sent.

How to check for yourself

Worth knowing

  • About the BMP. BMP looks like a safe “raw” choice, but a single photo can run to tens of megabytes and most sites refuse it.
  • About the WEBP. Images saved from websites arrive as WEBP even when the page looked like it showed a JPG, and then a document editor or upload form refuses them.
  • DDS, PSD, EXR, XWD and JPEG 2000 are read by the FFmpeg engine, a one-time 31 MB download.

Questions

Will converting BMP to WEBP lose quality?

WEBP is lossy, so some detail is discarded. The quality slider decides how much; the default of 90 is chosen so the difference is invisible in almost every photo.

Will the WEBP be smaller than the BMP?

Expect a much smaller file. BMP: A 12-megapixel image is about 36 MB. WEBP: Typically 25–35% smaller than the same JPG. Shrinking the file is often the main reason to make this conversion.

Read more about this

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