Convert WEBP to BMP online for free.
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Checking files and selected output formats.
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BMP is Microsoft's legacy uncompressed bitmap format. Almost no modern software output-defaults to BMP. Real reasons to convert: legacy Windows-based industrial or scientific software that can't open PNG, embedded systems reading raw pixel arrays, or specific print-shop equipment that only accepts BMP. Everyone else should pick PNG (lossless, transparent, smaller) instead.
Every image conversion involves a small trade-off between quality, file size, and compatibility. Here's how to make the choice deliberately, not by accident.
The drop zone above accepts single images or batches. Free-tier uploads are limited to 10 MB per file — enough for phone photos and standard web images. Pro handles files up to 1 GB and batches of up to 20 at once. Filenames are preserved, and the new extension is appended automatically.
BMP conversions default to a sensible middle ground — high enough that nothing visible is thrown away, low enough that the file isn't oversized. If you're preparing for print, pick a higher quality; for a web thumbnail, drop it. If the target format is lossless (PNG, TIFF, or WebP-lossless), there's no quality slider — every pixel is preserved.
The output is ready in a couple of seconds for a single image, or a few seconds for a batch delivered as a ZIP. Both the source you uploaded and the BMP output are permanently deleted from our servers within 30 minutes — nothing is retained, backed up, or shared with anyone.
The pixel data in your source is decoded, held briefly in memory as a raw bitmap, and re-encoded into the target format's container. Along the way, we preserve the colour profile embedded in the source (WEBP usually carries sRGB; some phone cameras save wider gamuts), any alpha channel where both formats support it, and EXIF metadata where relevant.
If the target format lacks something the source has — say, transparency in a PNG being converted to JPG — that data flattens onto a background before encoding. You'll never lose visible pixels silently; where a trade-off happens, we default to the most common expectation for that specific format pair.
Real reasons people run this conversion — grounded in specific problems, not vague benefits.
WordPress rejects some source formats out of the box. Squarespace, Ghost, and most e-commerce platforms have their own preferred image formats. If the upload button greys out or throws an error, a quick conversion to BMP usually fixes it — no plugin needed.
Some image formats are ecosystem-specific — HEIC belongs to Apple, WebP has patchy support on legacy Windows apps, and some tools still balk at anything newer than JPG. Converting to BMP means the person receiving the file doesn't have to install anything to open it.
Passport portals, visa applications, university forms, and job platforms often specify an exact format and file-size ceiling. If the requirement is BMP, this is the conversion. If they specify size too, run the compression tool afterwards to hit the target byte count.
Figma prefers PNG or SVG for exported assets. InDesign expects TIFF, EPS, or high-quality JPG for print. Canva takes almost anything but produces cleaner results with lossless sources. Converting your image to what the tool actually wants avoids the "why does this look pixelated" back-and-forth.
A 24-megapixel PNG is 20+ MB. Converting to a well-compressed BMP typically brings that under 3 MB with no visible change on a normal screen. Perfect for sliding under Gmail's 25 MB attachment cap, WhatsApp's compression, or a form's "under 5 MB" rule.
For long-term storage, a stable, widely-supported format matters more than pixel-perfect quality. BMP is a reasonable archival choice for WEBP sources when the goal is "openable in 10 years on whatever device exists then." Bonus: batch convert the entire folder in one pass.
Every conversion happens on TLS-encrypted uploads, on isolated per-request workers, with both the source and the result auto-deleted within 30 minutes. No ads, no watermarks on paid tiers, no metadata mined for training.
Technical comparison of the two formats — useful for deciding which to use, or for confirming what changes during conversion.
| Property | WebP | BMP |
|---|---|---|
| Full name | WebP (Google) | Bitmap |
| Year introduced | 2010 | 1990 |
| Developer / standard body | Microsoft | |
| MIME type | image/webp | image/bmp |
| File extension | .webp | .bmp |
| Compression | Lossy or lossless (VP8/VP8L) | Uncompressed (typically) |
| Color / data depth | 24-bit + 8-bit alpha | 1 to 32-bit |
| Max dimensions / size | 16,383 × 16,383 px | 32,767 × 32,767 px |
| Transparency | Yes | Yes |
| Animation | Yes | No |
| Standard / specification | RFC 9649 (lossless), RFC 6386 (VP8) | Microsoft Windows |
| Best for | Modern web — 25–35% smaller than JPG/PNG at equivalent quality | Legacy Windows applications, raw pixel data |
WebP is a modern image format developed by Google in 2010, based on the VP8 video codec. It supports both lossy and lossless compression modes, giving developers and designers flexibility to choose the right balance between quality and file size. WebP images are typically 25-35% smaller than equivalent-quality JPEG files, making it a compelling choice for web performance optimization.
WebP excels in web environments where bandwidth and loading speed are critical. It combines features that previously required multiple formats — lossy compression like JPEG, transparency like PNG, and animation like GIF — all in a single format. With over 97% browser coverage across Chrome, Firefox, Safari, and Edge, WebP has become one of the most practical choices for modern web development. Its primary limitation is reduced support in older desktop software and some native image editors.
Quick answers about compatibility, quality, metadata handling, and the most common reasons to convert WEBP files to BMP.
