BMP to WEBP Converter

Turn BMP into WEBP format online — free and easy

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Modern Format

BMP is outdated for most purposes — converting to WEBP gives you a practical format with better compression and wider modern support.

Runs in the Cloud

All processing for BMP to WEBP happens remotely on Convertio servers, keeping your own hardware free for other tasks.

Browser Powered

No downloads or installations — convert BMP to WEBP right from Chrome, Firefox, Edge, or Safari on any operating system.

How to convert BMP to WEBP

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose webp or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your webp file right afterwards

About formats

BMP (Bitmap) is a raster image file format developed by Microsoft for the Windows operating system, introduced with Windows 3.0 in 1990. The format stores pixel data in a straightforward structure: a file header specifying dimensions, color depth, and compression method, followed by an optional color palette and then the raw pixel array. BMP supports color depths from 1-bit monochrome through 4-bit and 8-bit indexed color to 16-bit, 24-bit true color, and 32-bit with alpha channel. Most BMP files store pixels uncompressed (BI_RGB), though optional RLE compression is available for 4-bit and 8-bit modes. Pixels are arranged in bottom-up row order by default, with each row padded to a 4-byte boundary. One advantage is absolute simplicity — the format has no complex encoding, filtering, or compression layers, making BMP files trivial to read and write programmatically in any language. This simplicity also means BMP images render with zero decoding overhead, useful in scenarios where decompression latency matters. The format's deep Windows integration is another strength: BMP is the native bitmap format for Windows GDI, clipboard operations, and device-independent bitmap (DIB) handling, ensuring first-class support across the entire Windows ecosystem. While BMP's lack of compression produces large files unsuitable for web use or storage-constrained environments, it remains widely used as an intermediate format in image processing, as a clipboard exchange format, and in embedded systems where decoding simplicity outweighs file size.
Developer: Microsoft
Initial release: 1990
WebP is an image format developed by Google, announced on September 30, 2010, designed to provide superior compression for web images in both lossy and lossless modes. The lossy mode is derived from the VP8 video codec's intra-frame coding (the same technology used in WebM video), applying block prediction, transform coding, and adaptive quantization to photographic content. The lossless mode uses a distinct algorithm combining predictive coding, color space transforms, backward reference to repeated pixel patterns, and entropy coding. WebP also supports alpha transparency in both modes — lossy WebP with transparency is unique among common web formats, offering semi-transparent images at much smaller sizes than PNG. The format supports animated sequences as well, providing a modern alternative to GIF with full-color support and dramatically better compression. One advantage is substantial file size reduction — lossy WebP produces images 25-35% smaller than JPEG at equivalent visual quality, and lossless WebP is typically 26% smaller than PNG, directly improving web page loading speed and reducing bandwidth costs. Universal browser support provides another key strength: Chrome, Firefox, Safari, Edge, and all mobile browsers now render WebP natively, achieving the broad adoption threshold needed for practical deployment. Google's core web infrastructure (Search, YouTube thumbnails, Gmail) uses WebP extensively, and the format is supported by major CDN platforms, CMS systems, and image processing services. WebP has established itself as the primary modern alternative to JPEG and PNG for web content.
Developer: Google
Initial release: September 30, 2010

Frequently Asked Questions

Why convert BMP to WEBP?

WebP compresses your BMP dramatically with Google's modern format — producing images up to 95% smaller that load quickly on all modern browsers.

What software reads WEBP format?

WEBP files work with Chrome, Firefox, Edge, Photoshop, GIMP. Check your operating system for built-in viewer support as well.

How long does BMP to WEBP conversion take?

Most conversions complete within seconds. Processing time depends on file size and server load, but the entire workflow typically finishes in under a minute.

Is BMP to WEBP conversion free?

Basic conversions are free on Convertio. Premium plans offer faster processing, larger file sizes, and higher daily conversion limits for heavier workloads.

What happens to my uploaded files?

Your BMP files are automatically deleted right after conversion. The resulting WEBP files remain available for download for 24 hours, then they are permanently removed.

Does this work on mobile devices?

Yes — the BMP to WEBP converter works in any mobile browser on iOS and Android. No app installation is needed — just open convertio.tools and upload your file.

BMP to WEBP Quality Rating

4.8 (237 votes)
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