Convert BMP to WebP
Convert uncompressed BMP files to tiny, web-ready WebP images.
Drop your BMP files here
Only BMP files accepted
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Why use PixelTools to convert bmp to webp
Massive size reduction
Uncompressed BMP files become tiny WebP images — often 95% smaller.
Quality control
Adjust the quality slider to balance file size and fidelity.
Batch processing
Convert all your BMP files to WebP at once.
No upload
Processed locally. Private by design.
Three steps to convert bmp to webp
- 1
Upload the BMP file
Drop the BMP file into the converter. BMP stores every pixel as raw RGB or RGBA data with no compression, so even small images produce large files — a 800x600 24-bit BMP is roughly 1.4 MB before conversion begins.
- 2
WebP encoding runs in your browser
The converter applies the libwebp codec directly in the browser via WebAssembly. For lossless output it uses WebP's lossless predictor model; for lossy output it applies DCT-based compression similar to VP8, discarding perceptually redundant detail that BMP stores verbatim.
- 3
Download the compressed WebP
The resulting WebP file is typically 90-98% smaller than the source BMP — a 6 MB BMP screenshot commonly lands under 200 KB at quality 85 — and is ready to embed in HTML, upload to Figma, Notion, or any modern CMS that accepts WebP.
Who converts BMP to WebP?
BMP files are uncompressed by design — a 1920x1080 screenshot can easily exceed 6 MB. Developers, archivists, and designers convert BMP to WebP to shrink those files by 90-98% while keeping visually lossless quality, making old captures and scans publishable on the web without passing through JPEG or PNG first.
Retro game developers publishing sprite sheets
Game engines like RPG Maker and older versions of GameMaker export sprite sheets as BMP, producing files that are impractical to serve on itch.io or a game's press kit page. Converting to WebP losslessly shrinks a 4 MB BMP sprite sheet to under 300 KB without altering a single pixel.
Windows screenshot archives going online
Windows Paint and many legacy screen-capture tools default to saving BMP files, leaving users with folders of multi-megabyte screenshots. Converting the batch to WebP makes them embeddable in blog posts or documentation sites at a fraction of the bandwidth cost.
Print designers exporting web-ready previews
Adobe Illustrator and CorelDRAW can export canvas previews as BMP when round-tripping through older Windows workflows. A WebP conversion lets designers share high-fidelity previews in Slack or Notion without hitting file-size upload limits.
Digital archivists publishing scanned documents
Flatbed scanners connected to older Windows software frequently save scans as 24-bit BMP, resulting in 10-40 MB files per page. WebP lossless encoding preserves every scanned detail while cutting storage and CDN costs for online archives.
Electron and desktop app developers preparing assets
Some Electron app toolchains generate BMP icons or UI mockup exports as an intermediate format. Converting to WebP before bundling reduces the installed asset size and ensures compatibility with Chromium-based renderer which has native WebP support.
QA engineers attaching bug-report screenshots
Automated testing tools like older versions of TestComplete save UI failure screenshots as BMP, making them too large to attach directly to Jira or Linear tickets. A BMP-to-WebP conversion brings a typical 2560x1440 failure screenshot from 11 MB down to under 400 KB.
Frequently asked questions
Why convert BMP to WebP?
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BMP files are uncompressed and huge. WebP produces tiny, web-optimized files — often 95% smaller — while keeping excellent visual quality.
How much smaller will the WebP be?
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WebP can reduce an uncompressed BMP by 90-98% depending on the image, making it dramatically more practical to store and share.
Does converting lose quality?
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WebP can be lossy or lossless. At high quality the visual difference is imperceptible while the size savings are enormous.
Can I batch convert?
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Yes. Drop all your BMP files and convert them to WebP in one batch.
Are my files uploaded?
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No. Everything runs locally in your browser.
Is WebP supported everywhere?
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WebP is supported by all modern browsers and most editors. For older software, convert to JPG or PNG instead.
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